BIG CALCULATOR.
Large buttons, easy to read
Free · Designed for iPad. Not verified for macOS.
Now in 13 languages, with three looks to suit your eyes and numbers written the way your own country writes them.
A calculator you can actually see — and now hear.
Big Calculator does four things — add, subtract, multiply and divide — with keys and digits large enough to read and to hit first time. Nothing else is on the screen.
It was built for people who find the calculator that came with their phone too small: for cataracts, glaucoma and macular degeneration, and for anyone whose eyes are simply not what they were.
BIG WHERE IT COUNTS
• Keys that fill the screen, with room between them
• A readout in large, heavy type — no thin, faint numbers
• Hide the memory keys and every remaining button grows
• Long sums stay readable, grouped the way your country writes them
• Portrait or landscape, on iPhone and iPad
IT READS THE ANSWER OUT LOUD
Turn on VoiceOver and Big Calculator speaks each result the moment it is worked out, so you never have to hunt across the screen for the answer.
• Every key says what it is — "Add", "Equals", "Memory add" — not "plus sign"
• Divide by zero and it says so, in words
• Switch the speaking off in Settings if you would rather it stayed quiet
Most calculators leave a blind user to explore the screen and guess. This one tells you.
THREE LOOKS — PICK WHAT SUITS YOUR EYES
• Warm Paper — dark type on a bright, warm background. Easiest to read for most people.
• Night — white on black at high contrast, for eyes that find bright screens painful.
• Classic — the original look, with bolder type.
The whole app repaints the moment you choose, so you see the difference before you commit.
A DESK CALCULATOR ON YOUR PHONE
• M+, M− and MRC memory keys, where you expect them
• AC clears everything, C clears just the entry
• A key press you can hear — or silence it in Settings
IN YOUR LANGUAGE, WITH YOUR NUMBERS
Available in 13 languages. The decimal point and the thousands separator follow your own country's convention, so the number on screen is written the way you write it — 1,234.56 or 1.234,56 or 1 234,56, whichever is yours.
NOTHING ELSE
No account. No sign-in. No cloud. Nothing to learn. Your sums stay on your phone.
Big Calculator is free, supported by a single banner advert at the bottom of the screen.
Big Calculator now talks.
• Results are read aloud. Turn on VoiceOver and every answer is spoken the moment it is worked out — no hunting across the screen for it. Switch it off under Settings if you prefer quiet.
• Every key now says what it is. "Add", "Equals", "Memory add" — instead of "plus sign" and "M plus sign". Divide by zero and it tells you in words rather than showing a symbol that reads as nothing.
• Thirteen languages. The app, and the numbers themselves: the decimal point and thousands separator follow your own country, so a sum reads the way you write it.
• Three looks — Warm Paper, Night and Classic. Pick whichever suits your eyes.
• Hide the memory keys and every remaining button gets bigger.
• Longer sums, up to 19 digits.
• A clearer Clear key, and a tidier Settings screen.
• Fixed a crash when very large numbers were multiplied over and over.
The developer, Adysseus, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yan Liong Tan
- Size
- 6.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 12 more
- English, Arabic, French, German, Hindi, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 Yan Liong Tan