# Thumb calculator vs CalcLog

The clearest difference is ads: CalcLog at none against Thumb calculator's shown. 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.

Thumb calculator ships an update every 2 weeks, CalcLog every 3 weeks. The most recent releases landed on October 30, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Thumb calculator | CalcLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 35 MB | 50 MB |
| Requires iOS | 15.8.3 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [RedCandle Co.,Ltd.](https://appshunter.io/developer/1892951305) |

## What reviewers say

### Thumb calculator

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

**Features:** macOS Compatibility

**In-app purchases:** none


### CalcLog

[App page](https://appshunter.io/ios/app/calclog/id6762238065)

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

**In-app purchases:** none


## Frequently asked questions

### Is Thumb calculator free?

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

### Is CalcLog free?

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

### Do Thumb calculator or CalcLog have ads?

Thumb calculator shows ads; CalcLog does not.

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

Thumb calculator ships an update every 2 weeks, and CalcLog every 3 weeks. Most recently, Thumb calculator was updated on October 30, 2026 and CalcLog on October 18, 2026.

---

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