# Stopwatch Timer vs Soap Lye Calculator

The clearest difference is price: Stopwatch Timer at Free against Soap Lye Calculator's $3.99. Stopwatch Timer also leads on update cadence (every 4 days vs every 3 months) and iOS requirement (12.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

Stopwatch Timer is free to download; Soap Lye Calculator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stopwatch Timer ships an update every 4 days, Soap Lye Calculator every 3 months. The most recent releases landed on October 12, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Stopwatch Timer | Soap Lye Calculator |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 months |
| Size | 43 MB | 34 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PIXOPLAY IT SERVICES PRIVATE LIMITED](https://appshunter.io/developer/842565895) | [Jelmer van Nuss](https://appshunter.io/developer/1880809991) |

## What reviewers say

### Stopwatch Timer

[App page](https://appshunter.io/ios/app/stopwatch-timer-quicklap/id6744531430)

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

**In-app purchases:** none


### Soap Lye Calculator

[App page](https://appshunter.io/ios/app/soap-lye-calculator/id6762357300)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stopwatch Timer free?

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

### Is Soap Lye Calculator free?

Soap Lye Calculator costs $3.99, with no in-app purchases.

### Do Stopwatch Timer or Soap Lye Calculator have ads?

Neither Stopwatch Timer nor Soap Lye Calculator shows ads.

### Which is updated more often, Stopwatch Timer or Soap Lye Calculator?

Stopwatch Timer ships an update every 4 days, and Soap Lye Calculator every 3 months. Most recently, Stopwatch Timer was updated on October 12, 2026 and Soap Lye Calculator on October 19, 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.*