# App for Light meter controller vs Zill

The clearest difference is update cadence: Zill at every 11 days against App for Light meter controller's every 7 months. App for Light meter controller's advantage is iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases 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 and Zill sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

App for Light meter controller ships an update every 7 months, Zill every 11 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | App for Light meter controller | Zill |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (19 ratings)](https://appshunter.io/ios/app/app-for-light-meter-controller/id6670164188/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 7 months | **Every 11 days** |
| Monetization | Free with in-app purchases | — |
| Size | 116 MB | 14 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Irina Metelkina](https://appshunter.io/developer/1616464605) | [Tariq Al-aqrabawi](https://appshunter.io/developer/1877383192) |

## What reviewers say

### 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 |


### Zill

[App page](https://appshunter.io/ios/app/zill-sun-and-shade/id6815185313)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zill Pro | $5.99 | one-time |


## Frequently asked questions

### Is App for Light meter controller free?

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

### Is Zill free?

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

### Do App for Light meter controller or Zill have ads?

Both App for Light meter controller and Zill show ads.

### Which is updated more often, App for Light meter controller or Zill?

App for Light meter controller ships an update every 7 months, and Zill every 11 days. Most recently, App for Light meter controller was updated on October 25, 2026 and Zill on October 29, 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.*