Big Button Calculator Pro Lite vs Square Root Calculator SDG
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Big Button Calculator Pro Lite
A user-friendly calculator app featuring large buttons and customizable colorful backgrounds. It offers a dual-line display, multi-line input for complex equations, and convenient gesture controls for editing and copying.
- Large buttons
- Dual-line display
- 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! This version is ad supported. ・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://
Square Root Calculator SDG
This utility app provides a straightforward way to calculate the square root of any number. Its simple interface makes it easy to use for quick calculations.
- Calculate square roots
- Easy to use interface
- Quick calculations
- Supports all numbers
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Square Root Calculator helps you to calculate the square root of the number in an easy way. Square Root Calculator is great application and easy to use.
Screenshots
Verdict
The clearest difference is ratings volume: Big Button Calculator Pro Lite at 14K against Square Root Calculator SDG's 4. Big Button Calculator Pro Lite also leads on update cadence (every 3 months vs every 12 months). Square Root Calculator SDG's advantage is review sentiment (100% vs 83%) and iOS requirement (11.0 vs 15.2). On price, rating, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.7 for Big Button Calculator Pro Lite against 4.8 for Square Root Calculator SDG. That said, the two scores are not equally well evidenced: Big Button Calculator Pro Lite has 14K ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 83% of Big Button Calculator Pro Lite's written reviews are positive against 100% of Square Root Calculator SDG's.
Big Button Calculator Pro Lite ships an update every 3 months, Square Root Calculator SDG every 12 months. The most recent releases landed on October 17, 2026 and October 10, 2026 respectively.
| Parameter | Big Button Calculator Pro Lite | Square Root Calculator SDG |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (14K ratings) | 4.8 (4 ratings) — better |
| Positive reviews | 82.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 14K — better | 4 |
| Update frequency | Every 3 months — better | Every 12 months |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.2 | 11.0 — better |
| Further details — not scored | ||
| Size | 45 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Cider Software LLC | SDG CODE DOO NIS |
Customer experience
Big Button Calculator Pro Lite
Square Root Calculator SDG
Bugs and requests
Big Button Calculator Pro Lite
Reported bugs
2 issues- Occasionally shows answer before calculation is complete
- Rounding issues leading to inaccurate results
Requested features
4 requests- Add more background options
- Allow custom background uploads
- Add option to change button colors
- Improve ad experience or offer ad-free version
Square Root Calculator SDG
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Big Button Calculator Pro Lite
No in-app purchases
Square Root Calculator SDG
No in-app purchases
Questions
Is Big Button Calculator Pro Lite free?
Is Square Root Calculator SDG free?
Which has better reviews, Big Button Calculator Pro Lite or Square Root Calculator SDG?
Do Big Button Calculator Pro Lite or Square Root Calculator SDG have ads?
Which is updated more often, Big Button Calculator Pro Lite or Square Root Calculator SDG?
Other comparisons
