# 三思照度计 vs App for Light meter controller

The clearest difference is in-app purchases: 三思照度计 at none against App for Light meter controller's 5. 三思照度计 also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 7 months). On price and device support there is nothing between them.

Both are free to download. App for Light meter controller sells 5 in-app purchases, starting at $5.99 per year. 三思照度计 asks for nothing beyond the download.

三思照度计 ships an update every 2 weeks, App for Light meter controller every 7 months. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 三思照度计 | App for Light meter controller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (18 ratings)](https://appshunter.io/ios/app/app-for-light-meter-controller/id6670164188/reviews)** |
| Number of ratings | — | **18** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 7 months |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 116 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Sansi Electronic Engineering Co., Ltd](https://appshunter.io/developer/965055646) | [Irina Metelkina](https://appshunter.io/developer/1616464605) |

## What reviewers say

### 三思照度计

[App page](https://appshunter.io/ios/app/id6446383682)

**Features:** macOS Compatibility

**In-app purchases:** none


### App for Light meter controller

[App page](https://appshunter.io/ios/app/app-for-light-meter-controller/id6670164188)

Transform your smartphone into a professional light meter. Measure illumination in LUX and FC, and check color temperature in kelvins. Ideal for photographers, designers, and anyone needing precise light data.

**Highlights:** Measure LUX and FC, Check color temperature in kelvins, Supports various light types (LED, sunlight, UV), Intuitive interface with graphs, Save and export light readings, Professional-grade accuracy

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly subscription | $5.99 | per year |
| Monthly subscription | $12.99 | per month |
| Yearly subscription | $14.99 | per year |
| Yearly subscription | $19.99 | per year |
| Yearly subscription | $34.99 | per year |


## Frequently asked questions

### Is 三思照度计 free?

三思照度计 is free to download, with no in-app purchases.

### Is App for Light meter controller free?

App for Light meter controller is free to download, with in-app purchases available.

### Do 三思照度计 or App for Light meter controller have ads?

App for Light meter controller shows ads; 三思照度计 does not.

### Which is updated more often, 三思照度计 or App for Light meter controller?

三思照度计 ships an update every 2 weeks, and App for Light meter controller every 7 months. Most recently, 三思照度计 was updated on September 9, 2026 and App for Light meter controller on September 15, 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.*