# ProofLens vs C2O ONE

The clearest difference is in-app purchases: C2O ONE at none against ProofLens's 3. C2O ONE also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ProofLens sells 3 in-app purchases, starting at $7.99 per month. C2O ONE asks for nothing beyond the download.

ProofLens ships an update every 2 weeks, C2O ONE fortnightly. Both last shipped on October 4, 2026.

## The numbers

| Metric | ProofLens | C2O ONE |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Size | 5 MB | 4 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Halil Can GUNDUZ](https://appshunter.io/developer/1827269855) | [Garcia Diafuana JOAO](https://appshunter.io/developer/6794696519) |

## What reviewers say

### ProofLens

[App page](https://appshunter.io/ios/app/prooflens/id6794637714)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ProofLens Pro Monthly | $7.99 | per month |
| ProofLens Pro Yearly | $79.99 | per year |
| 10 Report Credits | $4.99 | one-time |


### C2O ONE

[App page](https://appshunter.io/ios/app/c2o-one/id6804765531)

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

**In-app purchases:** none


## Frequently asked questions

### Is ProofLens free?

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

### Is C2O ONE free?

C2O ONE is free to download, with no in-app purchases.

### Do ProofLens or C2O ONE have ads?

Neither ProofLens nor C2O ONE shows ads.

### Which is updated more often, ProofLens or C2O ONE?

ProofLens ships an update every 2 weeks, and C2O ONE fortnightly. Most recently, ProofLens was updated on October 4, 2026 and C2O ONE on October 4, 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.*