# f/oss vs Lume

The clearest difference is in-app purchases: Lume at none against f/oss's 3. Lume also leads on update cadence (every 2 days vs every 6 days) and iOS requirement (18.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. f/oss sells 3 one-off in-app purchases. Lume asks for nothing beyond the download.

f/oss ships an update every 6 days, Lume every 2 days. The most recent releases landed on September 27, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | f/oss | Lume |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 2 days** |
| Size | 1 MB | 3 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Luca Tescari](https://appshunter.io/developer/1633824637) | [Milo Zoppini](https://appshunter.io/developer/1493178049) |

## What reviewers say

### f/oss

[App page](https://appshunter.io/ios/app/foss/id6761634199)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nice Tip | $1.99 | one-time |
| Generous Tip | $5.99 | one-time |
| Amazing Tip | $9.99 | one-time |


### Lume

[App page](https://appshunter.io/ios/app/lume-light-meter/id6803772347)

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

**In-app purchases:** none


## Frequently asked questions

### Is f/oss free?

f/oss is free to download, with in-app purchases available.

### Is Lume free?

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

### Do f/oss or Lume have ads?

Neither f/oss nor Lume shows ads.

### Which is updated more often, f/oss or Lume?

f/oss ships an update every 6 days, and Lume every 2 days. Most recently, f/oss was updated on September 27, 2026 and Lume on October 7, 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.*