Supported Features
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VoiceOver
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Voice Control
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Larger Text
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Dark Interface
Numa: Calculator & Notes
Unit & Currency Converter
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Plan a trip on one canvas: flights, nights, daily budget. Change the number of nights and every total, link and graph follows instantly.
Numa is a calculator for iPhone and iPad where every calculation stays on the canvas like a note. Change a number and every result updates instantly.
A CANVAS, NOT A DISPLAY
Calculations sit freely on a canvas that grows with you. Nothing disappears after the equals sign: tap a number, change it, and everything that depends on it is right again.
LINKED VALUES
Select a result and press an operator: a linked number appears below it in its own color. Or drag one number onto another. Changes flow through as many steps as you like.
CALCULATE WITH NAMES
Label a number, say “Rent”, and keep calculating with the name: Rent × 12. A canvas reads like a page of notes and works like a spreadsheet.
SCENARIOS
Give a number up to three values (A, B, C). Numa works through every scenario and shows the results side by side.
SLIDERS AND GRAPHS
• A slider on any number, smooth or in whole numbers
• Graphs: a number becomes x, its result the curve. Several curves, live
UNITS, DATES, CURRENCIES
Units calculate along: 120 km ÷ 1.5 h = 80 km/h, 120 USD/h × 8 h = 960 USD. Dates and times too: today + 90 d, 17:30 − 08:15 = 9 h 15 min, workdays until a date. Plus 25 currencies with the European Central Bank’s reference rates.
OVER 30 FUNCTIONS
Percent the way you’d do it by hand (78 + 7% = 83.46), powers, roots, factorial, logarithms, trigonometric and hyperbolic functions in degrees or radians, random numbers, scientific notation. Addition, subtraction, multiplication and division use exact decimals: 0.1 + 0.2 is 0.3.
FOR iPhone AND iPad
• Multiple canvases in Files and iCloud Drive; the last one opens at launch
• Capture numbers from paper with the camera
• Drag and drop, into other apps too
• Hardware keyboard, left-handed mode, VoiceOver, Dynamic Type, Dark Mode
• Share as PDF, image or text, print
NUMA PRO
Numa is free: the canvas, linking, names, sliders and all functions. A one-time purchase, not a subscription, unlocks graphs, units, dates and currencies, scenarios and the camera.
PRIVACY
No account, no ads, no analytics. Numa calculates on your device and only downloads exchange rates when you convert currencies.
Privacy: https://numa.bognar.net/en/privacy/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Drag without the circle: tap a number and drag it directly. New in the context menu: “Move” moves a number instead of creating a link. Plus larger scenario capsules and polish.
The developer, Peter Bognar, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Peter Bognar
- Size
- 10.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 27.0 or later.
- iPhone
Requires iOS 27.0 or later. - iPad
Requires iPadOS 27.0 or later. - Mac
Requires macOS 27.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 27.0 or later.
- iPhone
- Languages
English and 31 more
- English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Numa Pro $5.99
- Copyright
- © 2026 numa.bognar.net
