# On vs Romi

The clearest difference is in-app purchases: On at none against Romi's 1. Romi's advantage is iOS requirement (15.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Romi sells 1 in-app purchase, starting at $19.99 per month. On asks for nothing beyond the download.

On ships an update monthly, Romi every 6 weeks. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | On | Romi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Size | 17 MB | 77 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Digital Advisory Limited](https://appshunter.io/developer/1707419200) | [Neuro Notion](https://appshunter.io/developer/1838611323) |

## What reviewers say

### On

[App page](https://appshunter.io/ios/app/on-timer/id6505042448)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### Romi

[App page](https://appshunter.io/ios/app/romi-your-adhd-companion/id6752275831)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remi Pro | $19.99 | per month |


## Frequently asked questions

### Is On free?

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

### Is Romi free?

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

### Do On or Romi have ads?

Neither On nor Romi shows ads.

### Which is updated more often, On or Romi?

On ships an update monthly, and Romi every 6 weeks. Most recently, On was updated on November 4, 2026 and Romi on November 5, 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.*