Pricing that respects the math.
Start free. Scale as your arithmetic ambitions grow.
Free
Get started with arithmetic's most foundational digit range.
Prices shown exclude applicable taxes. Final price calculated at checkout.
- Digits 1–9
- Addition
- 5 calculations per day
- Dark mode
- Decimals (for digits 1–9)
7-Day Free Trial
All Pro features free for 7 days, then $1.99/mo. Cancel anytime.
Prices shown exclude applicable taxes. Final price calculated at checkout.
- Digit 0, subtraction, multiplication
- Unlimited = presses
- Calculation history (last 10)
- Copy result
- Up to 8 decimal places
- Ads still present
- Division not included
Pro
For serious arithmeticians who require zero.
Prices shown exclude applicable taxes. Final price calculated at checkout.
- Everything in Free
- Digit 0
- Subtraction, multiplication
- Unlimited = presses
- Calculation history (last 10)
- Copy result
- Up to 8 decimal places
Ultra
Division, dark mode, and a focused, ad-free experience.
Prices shown exclude applicable taxes. Final price calculated at checkout.
- Everything in Pro
- Division (fair use policy applies)
- Light mode
- No ads
- Unlimited decimal places
- Calculation history (last 25)
- Custom button color
Founder
A TI-84 costs $99. We felt that was the right reference point.
Prices shown exclude applicable taxes. Final price calculated at checkout.
- Everything in Ultra + Scientific
- Gold Founder badge
- Name in Changelog under "People Who Got It"
- Each purchase funds Apple Sign In community unlock
- Priority support — 12-hr response
Enterprise
For organizations with serious arithmetic needs.
Prices shown exclude applicable taxes. Final price calculated at checkout.
- Everything in Ultra + Scientific
- SSO / SAML
- Dedicated CSM
- SLA-backed = button uptime
- Audit logs
- Volume credit discounts
- Net-60 invoicing
Not ready to commit? Start with Credits.
Pay-per-use unlocks for individual operations. Your balance: 0 credits.
The Starter
$0.49
10 credits
The Thoughtful
$0.99
40 credits
The Power Move
$1.99
100 credits
The Statement
$3.99
200 credits
The Mathematician
$—
Custom amount, $1–$200. you do the math
Curious about the rules? Read the FAQ →