Big Button Calculator Pro vs Simple Calculator.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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://
Simple Calculator.
A straightforward calculator designed for speed and accuracy, mimicking classic pocket calculators. It offers real-world logic, business-focused calculations like cost, sell, and margin, and a clean interface for effortless use.
- Real-world logic, no forced order of operations
- Running total display
- Cost, sell, margin calculations
- Add/subtract percentages in one step
- Clean, intuitive interface with large buttons
- Minimal, non-intrusive ads
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This is the calculator that gets it right—built for professionals, retailers, and anyone who needs fast, accurate math without the complexity. • Work smarter with real-world logic No forced order of operations—just like a classic pocket calculator with a running total. • Perfect for business use Easily handle cost, sell, and margin calculations. Add or subtract percentages in one step. • Clean, intuitive interface Large, labeled buttons and a crisp display make every calculation effortless. • Reliable and distraction-free Minimal ads, never intrusive—so you can stay focused, even in front of clients. Inspired by the Casio calculators you know and trust—modernized for your iPhone/ iPad. Download now and make everyday math faster, clearer, and smarter.
Screenshots
Verdict
The clearest difference is price: Simple Calculator. at Free against Big Button Calculator Pro's $9.99. Simple Calculator. also leads on ratings volume (1.6K vs 473). Big Button Calculator Pro's advantage is ads (none vs shown) and rating (4.9 vs 4.6). On update cadence, in-app purchases, device support and iOS requirement 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
Simple Calculator. is free to download; Big Button Calculator Pro costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Big Button Calculator Pro holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 473 and 1.6K respectively. Written reviews point the same way: 79% of Big Button Calculator Pro's written reviews are positive against 65% of Simple Calculator.'s.
Big Button Calculator Pro ships an update every 2 months, Simple Calculator. every 3 months. The most recent releases landed on October 20, 2026 and October 19, 2026 respectively.
| Parameter | Big Button Calculator Pro | Simple Calculator. |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 4.9 (473 ratings) — better | 4.6 (1.6K ratings) |
| Positive reviews | 78.6% of reviews — better | 65.1% of reviews |
| Number of ratings | 473 | 1.6K — better |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.2 — better | 15.6 |
| Further details — not scored | ||
| Size | 27 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Cider Software LLC | tasser gyati |
Customer experience
Big Button Calculator Pro
Simple Calculator.
Bugs and requests
Big Button Calculator Pro
Not enough reviews yet to summarise bugs or requests.
Simple Calculator.
Reported bugs
2 issues- Incorrect calculation results in some cases
- Ads appearing during critical usage scenarios
Requested features
3 requests- Add a dedicated 'C' clear button
- Provide more customization options for key layout
- Implement a history/memory function
In-app purchases
Big Button Calculator Pro
No in-app purchases
Simple Calculator.
No in-app purchases
Questions
Is Big Button Calculator Pro free?
Is Simple Calculator. free?
Which has better reviews, Big Button Calculator Pro or Simple Calculator.?
Do Big Button Calculator Pro or Simple Calculator. have ads?
Which is updated more often, Big Button Calculator Pro or Simple Calculator.?
Other comparisons
