airSlate vs Signable 2026
Short answer: pick Signable if you want straightforward, legally binding e-signatures with predictable pricing and a real human support team, pick airSlate if you need full document-workflow automation across Salesforce, NetSuite and 100+ no-code Bots. Signable wins our overall score (4.0 vs 3.5) for plain signing; airSlate wins on raw feature depth and integrations.
The catch most comparisons miss: airSlate signs you up through signNow, which in 2025 moved to a hard cap of around 100 signature invites per user a year, with paid overage on every invite past it. A headline that looks like roughly $540 a year can balloon at real volume. Signable, meanwhile, raised prices in June 2026. Both moves matter, and the math below decides this match.
Enterprise document automation, 100+ Bots, deep CRM. Overkill for plain signing.
Try airSlate for free →Read the full airSlate review →Simple, cheap, compliant UK e-sign with real human support. Narrow on purpose.
Try Signable for free →Read the full Signable review →Who wins for you
Predictable envelope pricing in GBP, unlimited users, UK eIDAS, and a Sheffield support team on phone and chat.
Try Signable for free →Signable PAYG means zero commitment. signNow's roughly 100-invite annual cap is wasteful when you sign rarely.
Try Signable for free →100+ no-code Bots, document generation, Salesforce and NetSuite routing. Depth Signable simply does not have.
Try airSlate for free →signNow Business at $8/user/month annual is cheap, but model the invite overage carefully before you commit.
Try airSlate for free →airSlate vs Signable at a glance
Every cell below is grounded in each tool's official pricing and docs as of June 2026. The products solve different problems, so read the billing row first. airSlate here means its signNow signature layer unless noted, since that is the signing entry point.
| airSlate | Signable | Edge | |
|---|---|---|---|
| What it actually isairSlate is broader, Signable is narrower by design | Document workflow suite: signNow (e-sign) plus altaFlow automation, under the airSlate parent | Focused UK e-signature platform, signing only | — |
| Billing unitThe single biggest difference | Per user/month plus a ~100 signature-invite cap per user/year, then paid overage per invite | Per envelope, no per-user charge, unlimited users on every plan | Signable |
| Entry paid price | signNow Business $8/user/month annual (~$20 monthly) | Small £31/month for 50 envelopes (~$43), or PAYG £1.60/envelope | — |
| Free tier | No permanent free plan, 7-day signNow trial, card required | No permanent free plan, 14-day trial, no card required | Signable |
| Workflow automation | altaFlow: 100+ no-code Bots, document generation, conditional routing | None, pure e-signature with reminders and signing order | airSlate |
| ComplianceContext-dependent: HIPAA breadth vs UK-native AES included | ESIGN, GDPR, HIPAA with BAA, SOC 2 Type II, PCI DSS, FERPA | UK eIDAS and Electronic Communications Act 2000, SES and AES on all plans | — |
| Native integrations | Salesforce, NetSuite, Dynamics 365, HubSpot, Slack, QuickBooks, Stripe, Xero and more | Slack, Google Drive, Google Docs, Dropbox, HubSpot, plus Zapier and Make | airSlate |
| API access | signNow Enterprise, or altaFlow Automate tier at $799/month | Available from the Small plan upward | Signable |
| Support channels | Help center on Free, email and chat plus one Zoom consult on Growth, priority SLA above | Email, phone, and live chat on every plan, UK Sheffield team | Signable |
| Mobile app | Yes, native iOS and Android on signNow | No dedicated app, mobile browser signing works | airSlate |
| Community score | 3.6/5 from 15 Trustpilot and G2 reviews | 4.9/5 from 15 Capterra and TrustRadius reviews | Signable |
| Ideal user | Mid-market and enterprise teams automating document-heavy processes | UK and EU SMBs that sign contracts and value support | — |
Prices checked June 2026 on altaflow.com/pricing, signable.us/plans and aggregator sources. airSlate signNow is quoted in USD, Signable in GBP, so totals are not directly comparable. The signNow per-tier overage figure is reported by users and aggregators, not confirmed on the official page.
Criterion by criterion, head to head
The same five criteria we scored on each tool's review page. Different strengths, one clear pick each round.
01 Round 1: getting the first contract signed.
Signable takes this 4.5 to 3.3, and it is not close. We had a Signable account live and the first envelope sent in minutes, no onboarding call, no setup wizard. Upload a PDF, drag fields, set the signing order, send. Reviewers describe it as easy from the very first contract, and signers complete documents regardless of computer literacy. The rough edges are real but small: template setup is described as confusing, precise field placement is fiddly, and there is no mobile app.
airSlate splits in two. signNow, the signature layer, is genuinely easy and real users praise the very simple setup and the mobile signing. altaFlow, the workflow product, is where the friction lives: configuring Bots, especially wiring form data into a signature step, is the single most cited complaint, and the platform does not support Spanish, which adds an adoption tax for non-English teams. The no-code label is real but needs an asterisk. If your job is plain signing, Signable is the smoother ride; if you accept onboarding time for automation power, signNow alone is fine.
Choose airSlate if you will live in altaFlow Bots and can budget real onboarding time.
Choose Signable if you want contracts going out this afternoon with zero learning curve.
02 Round 2: where the bill actually lands.
Signable wins this 4.2 to 2.6, and the reason is predictability. It bills per envelope with unlimited users: Small at £31/month for 50, Medium at £73 for 150, up to Corporate at £314 for 750, and PAYG at £1.60 per envelope with no commitment. You budget by volume, not by headcount, and Advanced Electronic Signatures are included on every plan rather than gated. The honest bémol: a price rise landed in June 2026 (notice issued April 2026), and envelope caps mean a busy month can push you up a tier.
airSlate's value is dragged down by two real problems. altaFlow jumps from a Free plan capped at 10 credits a month straight to Growth at $399/month, with nothing in between, which is brutal for a small team. And signNow's headline $8/user/month hides the invite model: real reviewers report only around 100 invites included, then paid overage per invite, and call it a bait-and-switch on what used to be a flat subscription. For any team signing daily, that overage is the opposite of predictable. The worked math is in the pricing table below.
Choose airSlate if your signing volume stays near the invite cap, or you need the altaFlow suite.
Choose Signable if you want a bill you can predict and unlimited users baked in.
03 Round 3: raw power and document depth.
airSlate takes this 4.4 to 3.2, and it earns it. altaFlow ships 100+ no-code Bots for data pre-fill, routing, reminders, payments and archiving, plus document generation that auto-creates contracts and invoices from Salesforce or Google Sheets data, conditional multi-path routing, white-label client portals, and a serious compliance stack: SOC 2 Type II, HIPAA with a BAA, GDPR, PCI DSS and FERPA. signNow adds audit trails, a mobile app, templates with placeholders and bulk send. This is built for document-centric automation, not just moving a PDF around.
Signable is deliberately narrow. The core is solid: SES and AES both UK eIDAS compliant, configurable signing order, multi-party signing, reusable templates, bulk send, contact management, and a full audit trail per envelope. But depth runs out fast: no central management dashboard, no saved signature library, no way to create or edit a document inside the app (you upload a finished PDF every time), and no auto-save on the signing page. It is a focused signing tool, not a document platform. For signing alone that is enough; for surrounding workflow, it is not.
Choose airSlate if you need workflow automation, document generation or HIPAA-grade compliance.
Choose Signable if your only job is getting documents signed cleanly and defensibly.
04 Round 4: who answers when it matters.
Signable wins this 4.7 to 2.9, and the reviews are close to unanimous. It runs a UK-based Sheffield Customer Success team on email, phone and live chat, on every plan, not as a premium add-on. Real users repeatedly call the help team always very helpful and say they love the customer service. Corporate adds concierge onboarding and a dedicated account manager. The honest caveat: isolated reports of slow response and some refund friction, and the named account manager is gated to Corporate.
airSlate's support is the criterion where its reviews turn harshest, and it is squarely about billing. One reviewer asked for zero stars after an endless AI loop trying to fix a basic billing question. A finance manager who liked the software flatly noted support was difficult to reach after onboarding. Another hit a renewal that stripped an included team seat. On paper the tiers look fine (email and chat on Growth, priority SLA above), but when the friction is financial and the front line is an AI loop, trust collapses. Bot documentation is also repeatedly called thin, exactly where altaFlow users get stuck.
Choose airSlate only if you are comfortable self-serving and rarely need billing help.
Choose Signable if a real human on the phone the same day matters to you.
05 Round 5: enterprise depth vs accessible API.
airSlate takes this 4.3 to 3.6, on the strength of its no-code Bot library. altaFlow connects natively to the systems document-heavy teams run on: Salesforce, NetSuite, Dynamics 365, HubSpot, Google Workspace, Slack, Teams, QuickBooks, Stripe, PayPal, Xero, Dropbox, OneDrive and UiPath for RPA, all as Bots with no API work. That CRM and ERP depth is something Signable does not attempt. The catch: the altaFlow REST API sits behind the Automate tier at $799/month, so the most flexible path is expensive.
Signable covers the common UK SMB stack and stretches further through automation platforms. Native connectors hit Slack, Google Drive, Google Docs, Dropbox and HubSpot; Zapier reaches 5,000+ apps with sent, opened and signed triggers; Make handles more complex chains; and there are niche industry connectors for education, accounting and real estate. The real edge is accessibility: Signable's well-documented REST API is available from the Small plan, where airSlate's needs the $799 tier. So airSlate wins on raw enterprise breadth, Signable wins on getting an API without a big budget.
Choose airSlate if you need deep Salesforce, NetSuite or Dynamics integration without developers.
Choose Signable if you want a documented API on an entry plan and the usual SMB connectors.
The real cost, plan by plan
Two pricing models that do not map onto each other: per user plus invite cap on one side, per envelope on the other. We list the plans, then run the cost examples the dossier supports, assumptions stated. The signNow overage rate is reported by users, treat it as indicative.
| airSlate | Signable | Edge | |
|---|---|---|---|
| Free / entry floorSignable PAYG is a genuine low-cost floor; airSlate has none | signNow: no permanent free plan, 7-day trial. altaFlow Free: 10 credits/month, a demo not a tier | No permanent free plan, 14-day no-card trial, then PAYG at £1.60/envelope | Signable |
| signNow per-seat plans | Business $8, Business Premium $15, Enterprise $30 per user/month annual, all with a ~100-invite/year cap | Not applicable, Signable does not charge per user | Signable |
| Signable monthly plansPer-envelope cost falls from £0.62 to £0.42 as you scale | Not applicable, airSlate signNow is per-seat | Small £31/50, Medium £73/150, Large £178/400, Corporate £314/750 envelopes | — |
| altaFlow automation tiersaltaFlow is a separate product from signNow signing | Free (10 credits/mo), Growth $399/mo (10,000 credits/yr), Automate $799/mo (20,000, API) | No equivalent, Signable has no workflow automation | — |
| Workflow API access | altaFlow Automate at $799/month, or signNow Enterprise | From the Small plan at £31/month | Signable |
| 3-user team, 120 contracts/monthAssumes Business Premium seats and the reported $1.80 overage; rate is indicative | ~$2,592/year on signNow: 3 seats at $15 (~$540) plus ~1,140 overage invites past the included 300, at ~$1.80 each | £876/year on Medium (150 envelopes/month), unlimited users, no overage | Signable |
| Heavy volume headline trapIllustrative arithmetic from the dossier; overage rate not officially confirmed | 3 Business Premium seats look like ~$540/year, but 3,600 invites/year is ~3,300 over the cap, near ~$6,480 total at ~$1.80 | Pick the tier that fits your volume; the cap is the envelope count, no surprise per-invite fee | Signable |
Prices checked June 2026. Signable raised prices in June 2026 (notice April 2026); old prices were not disclosed. signNow's per-tier overage (~$0.96 to $1.80) is from user reports and aggregators, not the official page, so the worked totals are indicative, not guaranteed. USD/GBP comparisons are approximate.
Pick by scenario
Choose airSlate if…
- You need full document workflow automation: multi-step approval, conditional routing, data pre-fill from Salesforce or NetSuite
- Your team runs on enterprise systems and you want no-code Bots to sync data without an IT project
- You need HIPAA with a BAA, PCI DSS or FERPA, signNow's compliance stack is enterprise-grade
- You are US-based, USD pricing applies, and your signing volume stays close to the invite cap per user
- You want one platform covering e-signature, automation, PDF editing and white-label portals
Choose Signable if…
- You are a UK or EU SMB that needs legally binding e-signatures without enterprise pricing or complexity
- Your team size grows or varies, unlimited users on every plan means no per-seat surprise
- You value predictable billing: envelope plans budget by volume, and PAYG keeps occasional use cheap
- Responsive human support matters, a Sheffield team on phone, chat and email across all plans
- You want a documented REST API without a large budget, available from the entry Small plan
Frequently asked questions
Is airSlate or Signable better for a UK small business?
For a UK SMB focused on affordable, compliant e-signing, Signable usually wins. It is UK-native, priced in GBP, includes unlimited users and Advanced Electronic Signatures on every plan, is UK eIDAS compliant, and runs a Sheffield support team on phone and chat. airSlate, via signNow, is cheaper per seat at $8/user/month but carries a roughly 100-invite-per-year cap with paid overage that can make a daily-signing bill unpredictable. airSlate only pulls ahead for a UK team that genuinely needs document workflow automation across Salesforce or NetSuite, where altaFlow's Bots add depth Signable does not have.What is the difference between airSlate, altaFlow and signNow?
airSlate is the parent company, not a single product. altaFlow, formerly airSlate WorkFlow, is its no-code workflow automation platform with 100+ Bots, document generation and multi-step routing. signNow is its e-signature product, which powers signing inside altaFlow flows and works on its own. The same umbrella also includes pdfFiller, DocHub and US Legal Forms. When you compare airSlate against Signable for signing, you are really comparing signNow, the signing layer. The CTA on our airSlate review and on this page opens the signNow trial, the most common entry point into the airSlate world.How does signNow's 100-invite cap and overage actually work?
In 2025 signNow moved its paid plans to a hard cap of around 100 signature invites per user per year, where previously plans included unlimited invites. Past that cap, each additional invite carries a fee that user reports and aggregators put at roughly $0.96 to $1.80 depending on the tier, though this is not confirmed on the official pricing page. The practical effect is that a flat-looking subscription becomes a pay-per-signature bill at volume. Multiple Trustpilot reviewers in 2026 describe it as a bait-and-switch on what used to be a simple annual plan. If you sign daily, model your invite count before committing.What is the cheapest e-signature tool for a UK business with 100 contracts a month?
At 100 contracts a month, Signable Medium at £73/month (150 envelopes, about £876/year) is the predictable pick, with unlimited users and no per-invite surcharge. airSlate signNow looks cheaper on the seat price, a single Business seat is $8/month, but 100 contracts a month is 1,200 invites a year, well past the roughly 100 included, so the reported overage of around $0.96 to $1.80 per extra invite pushes the real annual cost well above Signable for the same volume. For steady UK signing, Signable's envelope model wins on total cost and on having a fee you can actually predict.Can you migrate from Signable to airSlate signNow?
Migration is feasible, since both tools export signed documents as PDFs with audit trails. signNow can import templates from other platforms, but you will need to recreate Signable templates manually in signNow's format. The bigger consideration is pricing, not data: moving to signNow means switching from envelope-based billing to per-user seats plus the roughly 100-invite-per-year cap, so a team comfortably on Signable Medium (150 envelopes a month for £73) could face materially higher costs on signNow once it crosses the invite threshold. Map your monthly volume against the cap before you move, that is where the surprise usually hides.Does Signable comply with UK eIDAS for legally binding signatures?
Yes. Signable provides both Simple Electronic Signatures and Advanced Electronic Signatures, both compliant with UK eIDAS and the Electronic Communications Act 2000. Every envelope carries a detailed audit trail with timestamps, IP address, device details and email or SMS verification, the evidence trail that supports legal validity. Advanced Electronic Signatures are included on every plan rather than locked behind a premium tier, which is unusual at this price. For standard UK business contracts, signatures collected through Signable are legally binding, though for document types with specific statutory requirements you should always confirm the applicable rules first.airSlate vs Signable for real estate contracts, which fits better?
Signable has a native SME Professional connector built for real estate and uses envelope-based GBP pricing, which suits a UK agency sending a predictable 50 to 150 contracts a month. signNow, airSlate's signing layer, is used across real estate too, with templates, bulk send and mobile signing, and altaFlow adds depth if you need approval chains or CRM-driven document generation. For UK agents who just want contracts signed at known cost, Signable is typically more economical. For US real estate teams wanting Salesforce integration and automated routing, airSlate altaFlow earns its keep, but factor in the signNow invite overage at volume.Does airSlate support Spanish-speaking teams?
Not well. altaFlow operates in English only and does not support Spanish, which adds a real adoption tax for Spanish-speaking operators, a limitation documented in real user reviews. signNow's basic signing interface is more approachable, but the workflow and Bot configuration layer where the complexity lives is English-only. Signable similarly does not offer a Spanish interface, so neither tool is a strong fit for a Spanish-first team out of the box. If a localized interface is a hard requirement, especially for the heavier workflow automation rather than simple signing, weigh both against tools that ship Spanish before committing.airSlate vs Signable vs DocuSign, which should you pick?
Three different bets. Signable is the affordable UK-native pick: GBP pricing, unlimited users, AES on every plan, human support, but narrow on features. airSlate via signNow is cheap per seat and adds altaFlow's workflow automation, at the cost of the invite overage trap and an English-only platform. DocuSign is the market leader with the broadest global compliance and the deepest enterprise workflow, but the highest price. Pick Signable for cheap compliant UK signing, airSlate when you need document-workflow automation, and DocuSign when global reach and enterprise depth justify the spend. This page compares the first two head to head.Why did Signable raise its prices in 2026?
Signable issued a price increase notice in April 2026, effective on the next billing date on or after June 2026, raising its GBP plans and the Pay As You Go rate to £1.60 per envelope. The company did not disclose the old prices in its notice, so the exact size of the rise is not public. It is worth flagging honestly as a recent negative, the first notable hike in recent memory, but even after it Signable remains substantially cheaper than airSlate signNow at real signing volume, because there is no per-invite overage and users stay unlimited. Budget against the new rates, not older figures you might find in stale comparisons.
Test both, then decide
Free to start on either side. The fastest way to know is to send one real contract on each and watch the billing behave.
Best for mid-market teams needing document workflow automation, CRM and ERP Bots, and enterprise compliance. The button opens the signNow trial, airSlate's signing entry point.
Try airSlate for free →Read the full airSlate review →Best for UK and EU SMBs that want simple, affordable, compliant e-signatures with real human support. 14-day trial, no card, then PAYG at £1.60 per envelope.
Try Signable for free →Read the full Signable review →Affiliate links: if you sign up through them, you support our independent hands-on tests at no extra cost to you. The airSlate link opens the signNow program. We score both tools the same way and disclose the weak spots on each, including signNow's invite overage and Signable's 2026 price rise.
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