# Big Button Calculator Pro Lite vs Calculator Fastoder

The clearest difference is ads: Calculator Fastoder at none against Big Button Calculator Pro Lite's shown. Calculator Fastoder also leads on iOS requirement (12.0 vs 15.2). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Big Button Calculator Pro Lite ships an update every 3 months, Calculator Fastoder every 2 months. The most recent releases landed on October 14, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Big Button Calculator Pro Lite | Calculator Fastoder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (14K ratings)](https://appshunter.io/ios/app/big-button-calculator-pro-lite/id1131056808/reviews)** | — |
| Number of ratings | **14K** | — |
| Positive reviews | 82.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Ad-supported | — |
| Size | 45 MB | 40 MB |
| Requires iOS | 15.2 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cider Software LLC](https://appshunter.io/developer/465180756) | [Leonid Shulga](https://appshunter.io/developer/1498369847) |

## 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


### Calculator Fastoder

[App page](https://appshunter.io/ios/app/calculator-fastoder/id1553782256)

**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 Calculator Fastoder free?

Calculator Fastoder is free to download, with no in-app purchases.

### Do Big Button Calculator Pro Lite or Calculator Fastoder have ads?

Big Button Calculator Pro Lite shows ads; Calculator Fastoder does not.

### Which is updated more often, Big Button Calculator Pro Lite or Calculator Fastoder?

Big Button Calculator Pro Lite ships an update every 3 months, and Calculator Fastoder every 2 months. Most recently, Big Button Calculator Pro Lite was updated on October 14, 2026 and Calculator Fastoder on September 30, 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.*