# Messly vs On

The clearest difference is in-app purchases: Messly at none against On's 1. Messly also leads on iOS requirement (12.0 vs 17.6). On's advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. On sells 1 one-off in-app purchase. Messly asks for nothing beyond the download.

Messly ships an update every 2 months, On weekly. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Messly | On |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | — | Free |
| Size | 37 MB | 8 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Messly](https://appshunter.io/developer/1337787870) | [Mohsin Asad Sadiq](https://appshunter.io/developer/1896638622) |

## What reviewers say

### Messly

[App page](https://appshunter.io/ios/app/messly/id1337787871)

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

**In-app purchases:** none


### On

[App page](https://appshunter.io/ios/app/on-call/id6769200317)

Manage on-call shifts and track medical jobs efficiently. Prioritize workload, generate handover summaries instantly, and ensure data privacy with local storage. Designed by a doctor for fast, secure use during busy shifts.

**Highlights:** Track urgent and routine jobs, Prioritize workload, Generate structured handover summaries, Secure local data storage, Face ID protection, Fast and intuitive interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $2.99 | one-time |


## Frequently asked questions

### Is Messly free?

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

### Is On free?

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

### Do Messly or On have ads?

Neither Messly nor On shows ads.

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

Messly ships an update every 2 months, and On weekly. Most recently, Messly was updated on October 6, 2026 and On on October 8, 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.*