# Nap Timer vs Lux Meter

The clearest difference is rating: Lux Meter at 5.0 against Nap Timer's 2.0. Lux Meter also leads on update cadence (monthly vs every 35 months). Nap Timer's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, ratings volume, 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.

Lux Meter holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Nap Timer ships an update every 35 months, Lux Meter monthly. The most recent releases landed on September 26, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Nap Timer | Lux Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/nap-timer/id1048910593/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lux-meter-light-meter/id6790800796/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 35 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 28 MB | 2 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Emrah Kavak](https://appshunter.io/developer/551857478) | [Alper Sumer Guc](https://appshunter.io/developer/1896672915) |

## What reviewers say

### Nap Timer

[App page](https://appshunter.io/ios/app/nap-timer/id1048910593)

This app helps you set timed alarms for power naps, preventing deep sleep and grogginess. It aims to boost alertness, productivity, and cognitive function through scientifically supported nap durations.

**Highlights:** Timed power nap alarms, Stopwatch functionality, Simple UI, Date and Time display, Stylish menu system

**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 Nap Timer free?

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

### Is Lux Meter free?

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

### Which has better reviews, Nap Timer or Lux Meter?

Lux Meter is rated higher. Nap Timer averages 2.0 out of 5 from 1 ratings, while Lux Meter averages 5.0 from 1 ratings.

### Do Nap Timer or Lux Meter have ads?

Lux Meter shows ads; Nap Timer does not.

### Which is updated more often, Nap Timer or Lux Meter?

Nap Timer ships an update every 35 months, and Lux Meter monthly. Most recently, Nap Timer was updated on September 26, 2026 and Lux Meter on September 21, 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.*