# OOH Trace vs RetiTrak

The clearest difference is update cadence: OOH Trace at every 3 weeks against RetiTrak's every 2 months. OOH Trace also leads on iOS requirement (11.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OOH Trace ships an update every 3 weeks, RetiTrak every 2 months. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | OOH Trace | RetiTrak |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 48 MB | 23 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TRACE RESEARCH TECHNOLOGIES, S.L.](https://appshunter.io/developer/1602661942) | [Hashbrown Systems Pvt. Ltd.](https://appshunter.io/developer/598221570) |

## What reviewers say

### OOH Trace

[App page](https://appshunter.io/ios/app/ooh-trace/id1602661940)

**Features:** macOS Compatibility

**In-app purchases:** none


### RetiTrak

[App page](https://appshunter.io/ios/app/retitrak/id6736612219)

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

**In-app purchases:** none


## Frequently asked questions

### Is OOH Trace free?

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

### Is RetiTrak free?

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

### Do OOH Trace or RetiTrak have ads?

Neither OOH Trace nor RetiTrak shows ads.

### Which is updated more often, OOH Trace or RetiTrak?

OOH Trace ships an update every 3 weeks, and RetiTrak every 2 months. Most recently, OOH Trace was updated on September 21, 2026 and RetiTrak on September 9, 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.*