# Project RoadMap vs OTN

The clearest difference is ads: Project RoadMap at none against OTN's shown. Project RoadMap also leads on iOS requirement (15.6 vs 17.0). OTN's advantage is update cadence (every 3 days vs every 5 weeks). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Project RoadMap sells 1 one-off in-app purchase and OTN sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Project RoadMap ships an update every 5 weeks, OTN every 3 days. The most recent releases landed on September 29, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Project RoadMap | OTN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Size | 5 MB | 6 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [HOKEUN KIM](https://appshunter.io/developer/1801860937) | [SeokHui Lee](https://appshunter.io/developer/1129769874) |

## What reviewers say

### Project RoadMap

[App page](https://appshunter.io/ios/app/project-roadmap/id6746104150)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Project RoadMap | $4.99 | one-time |


### OTN

[App page](https://appshunter.io/ios/app/otn-one-time-note/id6793473020)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OTN Pro | $0.99 | one-time |


## Frequently asked questions

### Is Project RoadMap free?

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

### Is OTN free?

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

### Do Project RoadMap or OTN have ads?

OTN shows ads; Project RoadMap does not.

### Which is updated more often, Project RoadMap or OTN?

Project RoadMap ships an update every 5 weeks, and OTN every 3 days. Most recently, Project RoadMap was updated on September 29, 2026 and OTN on October 6, 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.*