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Simple, transparent pricing

Pay by website size,
not visitors.

Free forever for personal use. Paid plans for businesses embedding the widget.
No setup fees, no contracts on Starter and Pro.

Personal
Free
Browser extension for personal use. Works on any website you visit.
$0
Add to Chrome →
  • Chrome & Edge extension
  • 72 free accessibility features
  • High contrast, dyslexia font, reading mask
  • Focus tools, stop animations, cursor size
  • Works on any website
  • Widget on your site
  • Portal & API access
  • WCAG scanning
Freelance
Solo
One site, one seat. For solopreneurs, freelancers, and portfolios.
$19/mo
Billed monthly
🎉 Year 1: 20% off — $15.20/mo for 12 months*
Get Started →
  • Up to 500 pages
  • 1 team seat
  • Widget — all 83 tools
  • 1 API key · 1 brand (subdomains + TLDs free)
  • 10K API calls/mo
  • Analytics (30-day)
  • AI module (credit-pool add-on)from +$29/mo
  • WCAG scanning
  • Compliance reports
Small Business
Starter
Widget on your site, portal access, basic scanning. Best for small businesses.
$39/mo
Billed monthly
🎉 Year 1: 20% off — $31.20/mo for 12 months*
Get Started →
  • Up to 2,500 pages
  • 5 team seats+$5/seat/mo†
  • Widget — all 83 tools
  • 3 API keys · 2 brands (subdomains + TLDs free)+$5/key/mo†
  • WCAG scan — 100 pages, on-demand
  • Analytics (90-day)
  • AI module (credit-pool add-on)from +$29/mo
  • Auto-scan schedule
  • Compliance reports
⭐ Best Value
Pro
Everything in Starter plus WCAG scanning, compliance reports, and monthly auto-scan.
$89/mo
Billed monthly
🎉 Year 1: 20% off — $71.20/mo for 12 months*
Get Started →
  • Up to 10,000 pages
  • 25 team seats+$5/seat/mo†
  • Widget — all 83 tools
  • 10 API keys · 10 brands (subdomains + TLDs free)+$5/key/mo†
  • WCAG scan — 10,000 pages
  • Auto-scan — monthly
  • Compliance reports + VPAT
  • Analytics (1-year)
  • AI module (credit-pool add-on)from +$29/mo
  • Priority email support
🎓 Education
Schools
Built for K-12 and higher ed. IEP pipeline, Canvas LTI, weekly auto-scan.
$149/mo
Billed monthly
🎉 Year 1: 30% off — $104.30/mo for 12 months*
Get Started →
  • Up to 50,000 pages
  • 50 team seats+$5/seat/mo†
  • Widget — all 83 tools
  • 20 API keys · 25 brands (one per school; subdomains free)+$5/key/mo†
  • WCAG scan — 50,000 pages
  • Auto-scan — weekly
  • Compliance reports + VPAT
  • IEP document pipeline
  • Canvas LTI + Moodle
  • AI module (credit-pool add-on)from +$29/mo
  • Priority email + onboarding call
  • 99.9% SLA
Large Org
Enterprise
Custom contract. Everything included. White-label, SSO, SLA, dedicated support.
Custom
Talk to sales for a quote
🎉 Up to 15% off with annual prepay§
Contact Sales →
  • Unlimited pages & visitors
  • Unlimited team seats
  • WCAG scan — unlimited
  • Auto-scan — daily
  • Compliance reports + VPAT
  • IEP pipeline + Canvas LTI
  • White-label widget + portal
  • SSO (SAML 2.0 / OIDC)
  • AI module (credit-pool, Scale tier included)
  • 99.9% SLA + credits
  • Dedicated account manager
  • Custom DPA, 1-hr response

* Year 1 discount (Solo / Starter / Pro: 20% off, Schools: 30% off) applies automatically for the first 12 months via Stripe coupon — no code needed. After 12 months, subscription renews at the standard rate shown. You will receive an email reminder 14 days before renewal.

† Add-on seats and API keys are billed at $5/mo each on top of your plan. Contact [email protected] to add them. Self-serve billing portal for add-ons coming Q3 2026.

§ Enterprise discounts are negotiated per contract. Typical incentives: up to 15% off for annual prepay, additional savings for multi-year commitments, and custom credit-pool sizing. Final pricing set in your signed order form.

Need more seats or API keys?
Add them any time from your billing portal — no plan change needed. $5/mo per extra seat or API key. Over your plan max? Contact sales for a custom quote.
$5
per seat/mo
$5
per API key/mo
🧮 Plan calculator

Not sure which plan fits?

Enter your details and we'll recommend the right tier.

📄 Page-count billing

How we count pages

We count unique crawlable URLs on your domain. Query strings and fragments are not counted separately. Subdomains count as separate sites.

At signup we check your sitemap.xml first, then fall back to a lightweight crawl. We re-verify monthly.

Grace period: If you exceed your page limit, your widget keeps working for 1 full month. Upgrade, add pay-as-you-go pages (+$9/500 pages), or reduce your count. We never block accessibility tools.
🧩 Chrome Extension

Accessibility in every tab — no website required

The Angstroma extension works on any website you visit, not just yours. Free forever with 72 features. Upgrade for cloud sync and AI.

How it works
1
Install free
Add Angstroma from the Chrome Web Store. 72 features unlock right away — no account, no credit card.
2
Sign in for Pro or AI
Open the extension, sign in with your Angstroma account to unlock cloud sync, custom profiles, and Claude AI tools.
3
Pick your plan
Upgrade to Pro ($4.99/mo) or AI ($9.99/mo) at angstroma.com. Pay monthly or annually — annual saves 20%.
4
Use it everywhere
Your plan, profiles, and preferences sync across every Chrome and Edge browser you sign into.
Cancel anytime — no lock-in, manage from angstroma.comNever blocked — if billing lapses, Pro/AI features drop back to FreeOne subscription — works on every device you sign in from
MonthlyAnnualSave 20%
Free
Extension Free
72 accessibility features that work on any website. No account needed.
$0
forever free
  • 72 accessibility features
  • Vision, Reading, Focus, Navigation, Motion, Cognitive
  • High contrast, dyslexia font, cursor size, stop animations
  • Works offline — no internet required
  • No sign-in required
  • Cloud sync across devices
  • AI features
Add to Chrome — Free →
Pro
Extension Pro
Everything in Free plus cloud sync and productivity features.
$4.99
/mo
  • Everything in Free
  • +Cloud sync across devicesPro
  • +Custom profiles (save & load)Pro
  • +Natural text-to-speechPro
  • +Speed reading modePro
  • +PDF reader, Reading list, NotepadPro
  • +Focus timer, custom fonts & colorsPro
Get Pro — $4.99/mo →
AI
Extension AI
Everything in Pro plus 12 Claude-powered AI features on every page.
$9.99
/mo
500 AI calls/mo‡ included. Cache hits are free — same content served instantly, never counted. Resets on your billing date.
  • Everything in Pro
  • ✦AI Summarize & SimplifyAI
  • ✦AI Translate (50+ languages)AI
  • ✦AI OCR — image to textAI
  • ✦AI Alt text generatorAI
  • ✦AI Grammar, Rephrase, ToneAI
  • ✦AI Page score & Form assistantAI
Get AI — $9.99/mo →

All plans available on Chrome Web Store. Extension billing is separate from portal billing. Add to Chrome →

‡ 500 AI calls/month for real Claude API requests. Repeated content served from cache is always free and never counted. Counter resets on your billing anniversary date.

✦ AI Credit-Pool Add-on

How AI pricing really works

One transparent add-on that stacks on any paid plan. Pick a credit pool, pick a Claude model per task, done. No surprise bills — you set your own overage cap.

Lite
$29
/mo
2,000 credits / month
ESTIMATED TASKS
Haiku (Standard)2,000
Sonnet (Smart)666
Opus (Genius)133
Popular
Plus
$59
/mo
5,000 credits / month
ESTIMATED TASKS
Haiku (Standard)5,000
Sonnet (Smart)1,666
Opus (Genius)333
Max
$99
/mo
10,000 credits / month
ESTIMATED TASKS
Haiku (Standard)10,000
Sonnet (Smart)3,333
Opus (Genius)666
Scale
$179
/mo
30,000 credits / month
ESTIMATED TASKS
Haiku (Standard)30,000
Sonnet (Smart)10,000
Opus (Genius)2,000
Smart Mode — credits per task
Standard
Claude Haiku 4.5
Fast + cheap. ~95% of tasks.
1 credit
Smart
Claude Sonnet 4.6
Nuanced — translation, rephrasing.
3 credits
Genius
Claude Opus 4.7
Hard reasoning only — equation speech, long-form.
15 credits
Admins set a Smart Mode cap per tenant. Requests above the cap are refused without spending credits.
Ran out of credits?
  • 1. Overage — extra tasks billed at ~$0.015 per credit.
  • 2. Your cap — default $50/month. Change any time. Set to $0 to hard-block overage.
  • 3. Upgrade tier — switch pools any time, prorated to the day.
  • 4. Wait — credits reset on your billing anniversary.
Email alerts at 80% and 100% of pool and cap. Cache hits are always free.
Currency & billing
AI credit-pool and any overage are always billed in USD via Stripe — even for tenants paying their base plan in LKR via PayHere.
This keeps AI pricing uniform globally and avoids FX drift on metered usage. Unused credits do not roll over. Cache TTL is 7 days and is partitioned by Smart Mode (Haiku/Sonnet/Opus outputs never mix).
Enterprise contracts set their own cap, currency, and rollover rules.

Frequently asked questions

Start free, upgrade anytime

No credit card required. Add the extension to Chrome or create your account in 30 seconds.

Get started free →Contact Sales