# Colateral Training vs Lumi

The clearest difference is in-app purchases: Colateral Training at none against Lumi's 3. Colateral Training also leads on iOS requirement (15.0 vs 17.0). Lumi's advantage is update cadence (every 6 weeks vs every 15 months). On price there is nothing between them.

Both are free to download. Lumi sells 3 in-app purchases, starting at $3.99 per 7 days. Colateral Training asks for nothing beyond the download.

Colateral Training ships an update every 15 months, Lumi every 6 weeks. Both last shipped on October 28, 2026.

## The numbers

| Metric | Colateral Training | Lumi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | Every 15 months | **Every 6 weeks** |
| Size | 210 MB | 55 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | — | **iPhone** |
| Age rating | 12+ | 4+ |
| Developer | [DDR FUNCIONAL SPORT ZGZ1 SOCIEDAD LIMITADA](https://appshunter.io/developer/1791520640) | [Hishine Mobi HK Limited](https://appshunter.io/developer/1804500924) |

## What reviewers say

### Colateral Training

[App page](https://appshunter.io/ios/app/colateral-training/id6740770029)

**In-app purchases:** none


### Lumi

[App page](https://appshunter.io/ios/app/lumi-skin-detection/id6758033113)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lumi Premium Weekly | $3.99 | per 7 days |
| Monthly Subscription | $7.99 | per month |
| Lumi Premium Annual | $39.99 | per year |


## Frequently asked questions

### Is Colateral Training free?

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

### Is Lumi free?

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

### Which is updated more often, Colateral Training or Lumi?

Colateral Training ships an update every 15 months, and Lumi every 6 weeks. Most recently, Colateral Training was updated on October 28, 2026 and Lumi on October 28, 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.*