# KuCalc vs Thumb calculator

The clearest difference is ads: KuCalc at none against Thumb calculator's shown. KuCalc also leads on iOS requirement (11.0 vs 15.8.3). Thumb calculator's advantage is update cadence (every 2 weeks vs every 3 months). On price, 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.

KuCalc ships an update every 3 months, Thumb calculator every 2 weeks. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | KuCalc | Thumb calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 1 MB | 35 MB |
| Requires iOS | **11.0** | 15.8.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Mineaki Sakatoku](https://appshunter.io/developer/1674976728) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### KuCalc

[App page](https://appshunter.io/ios/app/kucalc/id6445941447)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Thumb calculator

[App page](https://appshunter.io/ios/app/thumb-calculator/id6499389948)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KuCalc free?

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

### Is Thumb calculator free?

Thumb calculator is free to download, with no in-app purchases.

### Do KuCalc or Thumb calculator have ads?

Thumb calculator shows ads; KuCalc does not.

### Which is updated more often, KuCalc or Thumb calculator?

KuCalc ships an update every 3 months, and Thumb calculator every 2 weeks. Most recently, KuCalc was updated on October 7, 2026 and Thumb calculator on October 4, 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.*