# CalcMaster vs Study Clock Timer

The clearest difference is update cadence: Study Clock Timer at every 3 days against CalcMaster's every 9 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. CalcMaster sells 1 one-off in-app purchase and Study Clock Timer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

CalcMaster ships an update every 9 days, Study Clock Timer every 3 days. The most recent releases landed on September 20, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | CalcMaster | Study Clock Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Size | 15 MB | 5 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yoshitaka Tanaka](https://appshunter.io/developer/1510093015) | [Tatsuya Kawasaki](https://appshunter.io/developer/562479077) |

## What reviewers say

### CalcMaster

[App page](https://appshunter.io/ios/app/calcmaster-math-practice/id6767875466)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CalcMaster Full Pack | $9.99 | one-time |


### Study Clock Timer

[App page](https://appshunter.io/ios/app/study-clock-timer/id6780480380)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a drink | $2.99 | one-time |


## Frequently asked questions

### Is CalcMaster free?

CalcMaster is free to download, with in-app purchases available.

### Is Study Clock Timer free?

Study Clock Timer is free to download, with in-app purchases available.

### Do CalcMaster or Study Clock Timer have ads?

Neither CalcMaster nor Study Clock Timer shows ads.

### Which is updated more often, CalcMaster or Study Clock Timer?

CalcMaster ships an update every 9 days, and Study Clock Timer every 3 days. Most recently, CalcMaster was updated on September 20, 2026 and Study Clock Timer on September 18, 2026.

---

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