# Sheet Calculator 3 vs Stopwatch Library

The clearest difference is update cadence: Stopwatch Library at every 3 days against Sheet Calculator 3's every 2 weeks. Sheet Calculator 3's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sheet Calculator 3 sells 2 in-app purchases, starting at $0.99 per month and Stopwatch Library sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sheet Calculator 3 ships an update every 2 weeks, Stopwatch Library every 3 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Sheet Calculator 3 | Stopwatch Library |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 22 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kuk-kyoung paek](https://appshunter.io/developer/1350089871) | [Naoyuki Hasegawa](https://appshunter.io/developer/6777422704) |

## What reviewers say

### Sheet Calculator 3

[App page](https://appshunter.io/ios/app/sheet-calculator-3/id6772929087)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $0.99 | per month |
| Premium Yearly | $9.99 | per year |


### Stopwatch Library

[App page](https://appshunter.io/ios/app/stopwatch-library/id6794338987)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を削除 | $2.99 | one-time |


## Frequently asked questions

### Is Sheet Calculator 3 free?

Sheet Calculator 3 is free to download, with in-app purchases available.

### Is Stopwatch Library free?

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

### Do Sheet Calculator 3 or Stopwatch Library have ads?

Neither Sheet Calculator 3 nor Stopwatch Library shows ads.

### Which is updated more often, Sheet Calculator 3 or Stopwatch Library?

Sheet Calculator 3 ships an update every 2 weeks, and Stopwatch Library every 3 days. Most recently, Sheet Calculator 3 was updated on October 25, 2026 and Stopwatch Library on October 25, 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.*