# Luminometer vs 節奏挑戰

The clearest difference is price: Luminometer at Free against 節奏挑戰's $0.99. 節奏挑戰's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Luminometer is free to download; 節奏挑戰 costs $0.99 up front. Luminometer sells 2 in-app purchases, starting at $2.99 per 7 days. 節奏挑戰 asks for nothing beyond the download.

Luminometer ships an update every 2 months, 節奏挑戰 every 2 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Luminometer | 節奏挑戰 |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.5 (16 ratings)](https://appshunter.io/ios/app/luminometer-lux-light-meter/id6446325225/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 13 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [27GROUP](https://appshunter.io/developer/1589401961) | [TENG-WEI Huang](https://appshunter.io/developer/1678678432) |

## What reviewers say

### Luminometer

[App page](https://appshunter.io/ios/app/luminometer-lux-light-meter/id6446325225)

Transform your device into a professional light meter to measure luminosity in lux and foot-candles. Achieve optimal illumination for any space, from greenhouses to workspaces, ensuring comfort and preventing glare. Calibrated with reference equipment for precise and reliable readings.

**Highlights:** Measures lux and foot-candle units, Internal Exposure Compensation for accuracy, Camera view for measured area, Calibrated with reference equipment, Versatile for various lighting conditions, Helps set optimal illumination levels

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Lifetime | $9.99 | one-time |


### 節奏挑戰

[App page](https://appshunter.io/ios/app/id6760937253)

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

**In-app purchases:** none


## Frequently asked questions

### Is Luminometer free?

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

### Is 節奏挑戰 free?

節奏挑戰 costs $0.99, with no in-app purchases.

### Do Luminometer or 節奏挑戰 have ads?

Luminometer shows ads; 節奏挑戰 does not.

### Which is updated more often, Luminometer or 節奏挑戰?

Luminometer ships an update every 2 months, and 節奏挑戰 every 2 days. Most recently, Luminometer was updated on November 3, 2026 and 節奏挑戰 on October 31, 2026.

---

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