# SimpleStopWatch vs Lux Meter

SimpleStopWatch and Lux Meter are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SimpleStopWatch ships an update every 3 weeks, Lux Meter monthly. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SimpleStopWatch | Lux Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (4 ratings)](https://appshunter.io/ios/app/lux-meter-light-meter/id6790800796/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 5 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [takumi nagase](https://appshunter.io/developer/1636165433) | [Alper Sumer Guc](https://appshunter.io/developer/1896672915) |

## What reviewers say

### SimpleStopWatch

[App page](https://appshunter.io/ios/app/simplestopwatch/id1636165431)

**Features:** macOS Compatibility

**In-app purchases:** none


### Lux Meter

[App page](https://appshunter.io/ios/app/lux-meter-light-meter/id6790800796)

This tool transforms your iPhone into a professional light meter, measuring illuminance in lux and foot-candles in real-time. It offers exposure calculations, color temperature estimates, and various presets for different use cases, all while working offline and without ads.

**Highlights:** Real-time lux and foot-candle readout, Exposure Value (EV) calculation, Color temperature (CCT) estimate, Spot or average metering, Use-case presets, CSV export of readings, 100% offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is SimpleStopWatch free?

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

### Is Lux Meter free?

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

### Do SimpleStopWatch or Lux Meter have ads?

Both SimpleStopWatch and Lux Meter show ads.

### Which is updated more often, SimpleStopWatch or Lux Meter?

SimpleStopWatch ships an update every 3 weeks, and Lux Meter monthly. Most recently, SimpleStopWatch was updated on October 13, 2026 and Lux Meter on October 8, 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.*