Calculator· vs Big Button Calculator Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator·
This app offers a straightforward calculation experience, focusing on essential functions without unnecessary complexity. It includes basic arithmetic, percentage calculations, and advanced functions like square root. Users can customize the appearance with multiple color schemes and utilize features like result copying and split-screen multitasking on iPad.
- Basic arithmetic operations
- Percentage calculations
- Multiple color schemes
- Copy results
- Square, square root, inverse functions
- iPad Split View support
- Apple Watch support
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A truly no-frills calculator with the perfect blend of features and simplicity. Tired of getting lost in features you don’t use, but wish you had just a few more? Try Calculator· today! Features: • The essentials—add, subtract, multiply, divide, percent • Multiple color schemes • Copy your result (double tap result to copy) • Square, square root, and inverse functions on iPad landscape • Split View for iPad so you can run two apps at once • Apple Watch Support This app contains auto-renewable subscriptions: • Premium Access • 1 month and 1 year durations available Limit one free trial per user. Charged through your iTunes account at confirmation of purchase. Your account will be charged within 24-hours prior to the end of the current period. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. You can manage your subscriptions and turn off auto-renewal from your Account Settings in iTunes after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that product, where applicable. • Privacy policy: https://www.iubenda.com/privacy-policy/905866 • Terms of use: http://www.timosstudios.com/terms-of-use You can follow the instructions on our website to change or cancel your subscription: http://www.timosstudios.com/how-to-cancel-subscription-on-ios
Big Button Calculator Pro
A user-friendly calculator app featuring large, colorful buttons and a dual-line display for simultaneous input and result viewing. It supports long equations, offers customizable themes and sounds, and includes accessibility features.
- Dual-line display
- Big buttons
- 18 color themes
- Multi-line input
- Gesture controls
- VoiceOver accessibility
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This is THE BEST calculator for iOS with big buttons and colorful backgrounds! ・Dual-line display - shows the input and result at the same time ・Percentage and backspace button ・18 color themes ・Multi-line input for really long equations ・Automatic scientific formatting ・VoiceOver accessibility ・Split View Gestures ・Swipe left on the display to backspace ・Swipe right on the display to clear ・Tap & hold on the result to copy ・Tap & hold on the input to move the cursor, copy, paste Customize ・Color Theme ・Sound URL Scheme: bigcalculatorpro://
Screenshots
Verdict
The clearest difference is price: Calculator· at Free against Big Button Calculator Pro's $9.99. Calculator· also leads on ratings volume (34K vs 463). Big Button Calculator Pro's advantage is in-app purchases (none vs 3) and ads (none vs shown). On rating, review sentiment, update cadence and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Calculator· is free to download; Big Button Calculator Pro costs $9.99 up front. Calculator· sells 3 in-app purchases, starting at $0.99 per month. Big Button Calculator Pro asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for Calculator· against 4.9 for Big Button Calculator Pro. That said, the two scores are not equally well evidenced: Calculator· has 34K ratings behind it against 463, so its average is the more settled of the two. Written reviews are what separate them: 84% of Calculator·'s written reviews are positive against 79% of Big Button Calculator Pro's.
Calculator· ships an update every 3 months, Big Button Calculator Pro every 2 months. The most recent releases landed on October 18, 2026 and October 8, 2026 respectively.
| Parameter | Calculator· | Big Button Calculator Pro |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 4.9 (34K ratings) | 4.9 (463 ratings) |
| Positive reviews | 84.3% of reviews — better | 78.6% of reviews |
| Number of ratings | 34K — better | 463 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.2 |
| Further details — not scored | ||
| Size | 47 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Tim O's Studios, LLC | Cider Software LLC |
Customer experience
Calculator·
Big Button Calculator Pro
Bugs and requests
Calculator·
Reported bugs
3 issues- Crashes when performing long calculations
- Freezes when opening the app
- Incorrect results for some complex calculations
Requested features
4 requests- Add a backspace/undo button
- Implement a history/memory feature
- Provide more customization options
- Reduce frequency of ads
Big Button Calculator Pro
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator·
- Upgrade App3 Days trial$0.991 Month
- Upgrade App$4.991 Year
- Upgrade App$1.99
Big Button Calculator Pro
No in-app purchases
Questions
Is Calculator· free?
Is Big Button Calculator Pro free?
Which has better reviews, Calculator· or Big Button Calculator Pro?
Do Calculator· or Big Button Calculator Pro have ads?
Which is updated more often, Calculator· or Big Button Calculator Pro?
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