# On vs Scalyx

The clearest difference is in-app purchases: On at none against Scalyx's 2. On also leads on device support (4 vs 2) and iOS requirement (17.6 vs 26.5). Scalyx's advantage is update cadence (every 5 days vs monthly). On price and ads there is nothing between them.

Both are free to download. Scalyx sells 2 in-app purchases, starting at $5.99 per month. On asks for nothing beyond the download.

On ships an update monthly, Scalyx every 5 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | On | Scalyx |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Size | 17 MB | 29 MB |
| Requires iOS | **17.6** | 26.5 |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Digital Advisory Limited](https://appshunter.io/developer/1707419200) | [Mouhamadou Dieye Fall](https://appshunter.io/developer/1893271631) |

## 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


### Scalyx

[App page](https://appshunter.io/ios/app/scalyx-adhd-planner-and-ai/id6762184183)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scalyx Premium (Monthly) | $5.99 | per month |
| Scalyx Premium (Yearly) | $34.99 | per year |


## Frequently asked questions

### Is On free?

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

### Is Scalyx free?

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

### Do On or Scalyx have ads?

Neither On nor Scalyx shows ads.

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

On ships an update monthly, and Scalyx every 5 days. Most recently, On was updated on October 30, 2026 and Scalyx on October 25, 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.*