# On vs Marten

The clearest difference is iOS requirement: On at 15.1 against Marten's 17.0. 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.

## The numbers

| Metric | On | Marten |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/on-time-calculator/id6764490984/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Monetization | Free | — |
| Size | 33 MB | 15 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Yuen Jing Liu](https://appshunter.io/developer/1895804293) | [joseph hamawi](https://appshunter.io/developer/1854729220) |

## What reviewers say

### On

[App page](https://appshunter.io/ios/app/on-time-calculator/id6764490984)

This app calculates the optimal alarm time by factoring in your morning routine, commute, and buffer time for unexpected delays. Simply input your preparation duration, travel time, and desired arrival, and it instantly provides the perfect wake-up call.

**Highlights:** Calculate alarm time, Input routine duration, Input commute time, Add buffer time, Intuitive interface, Copy time to clipboard

**Features:** macOS Compatibility

**In-app purchases:** none


### Marten

[App page](https://appshunter.io/ios/app/marten-markdown-code-notes/id6782895141)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is On free?

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

### Is Marten free?

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

### Do On or Marten have ads?

Neither On nor Marten shows ads.

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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.*