# Big Button Calculator Pro Lite vs Square Root Calculator SDG

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.

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.

## The numbers

| Metric | Big Button Calculator Pro Lite | Square Root Calculator SDG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (14K ratings)](https://appshunter.io/ios/app/big-button-calculator-pro-lite/id1131056808/reviews) | **[4.8 (4 ratings)](https://appshunter.io/ios/app/square-root-calculator-sdg/id6741165200/reviews)** |
| Number of ratings | **14K** | 4 |
| Positive reviews | 82.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 12 months |
| Monetization | Ad-supported | Ad-supported |
| Size | 45 MB | 12 MB |
| Requires iOS | 15.2 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cider Software LLC](https://appshunter.io/developer/465180756) | [SDG CODE DOO NIS](https://appshunter.io/developer/1343251532) |

## What reviewers say

### Big Button Calculator Pro Lite

[App page](https://appshunter.io/ios/app/big-button-calculator-pro-lite/id1131056808)

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.

**Highlights:** Large buttons, Dual-line display, 18 color themes, Multi-line input, Gesture controls, VoiceOver accessibility

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 💡 Customizable backgrounds
- 🚀 Accurate calculations
- 👍 Large, clear numbers
- 👍 Helpful for homeschooling

**What reviewers complain about**

- 🐛 Ads can be intrusive
- 🐛 Ads in foreign languages
- 🐛 Ads take time to close
- 🔋 High battery consumption due to ads

**Reported bugs**

- Occasionally shows answer before calculation is complete
- Rounding issues leading to inaccurate results

**Requested features**

- 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

[App page](https://appshunter.io/ios/app/square-root-calculator-sdg/id6741165200)

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.

**Highlights:** Calculate square roots, Easy to use interface, Quick calculations, Supports all numbers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Big Button Calculator Pro Lite free?

Big Button Calculator Pro Lite is free to download, with no in-app purchases.

### Is Square Root Calculator SDG free?

Square Root Calculator SDG is free to download, with no in-app purchases.

### Which has better reviews, Big Button Calculator Pro Lite or Square Root Calculator SDG?

Square Root Calculator SDG is rated higher. Big Button Calculator Pro Lite averages 4.7 out of 5 from 14K ratings, while Square Root Calculator SDG averages 4.8 from 4 ratings.

### Do Big Button Calculator Pro Lite or Square Root Calculator SDG have ads?

Both Big Button Calculator Pro Lite and Square Root Calculator SDG show ads.

### Which is updated more often, Big Button Calculator Pro Lite or Square Root Calculator SDG?

Big Button Calculator Pro Lite ships an update every 3 months, and Square Root Calculator SDG every 12 months. Most recently, Big Button Calculator Pro Lite was updated on October 17, 2026 and Square Root Calculator SDG on October 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*