# Must vs iomatrix

The clearest difference is update cadence: iomatrix at every 6 days against Must's every 2 months. iomatrix also leads on review sentiment (100% vs 90%) and device support (5 vs 3). Must's advantage is iOS requirement (12.0 vs 26.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Must ships an update every 2 months, iomatrix every 6 days. The most recent releases landed on October 10, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Must | iomatrix |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/must/id6479213927/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 90.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free | Free |
| Size | 52 MB | 27 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Jichan Hwang](https://appshunter.io/developer/1735193590) | [Joonhee Cho](https://appshunter.io/developer/1124471697) |

## What reviewers say

### Must

[App page](https://appshunter.io/ios/app/must/id6479213927)

Manage all your schedules quickly and easily with this intuitive app. It offers convenient schedule notifications, a dark theme option, and a task monitor to keep track of your to-dos. Organize your tasks systematically using the Eisenhower Matrix and color-coded tags.

**Highlights:** Eisenhower Matrix for systematic task management, Convenient schedule notifications, Home screen widgets for quick access, Customizable color tags for event classification, Task monitor with filtering options, Dark theme support

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

**In-app purchases:** none


### iomatrix

[App page](https://appshunter.io/ios/app/iomatrix/id6760413591)

Organize your life using the Eisenhower Matrix framework. Prioritize tasks by urgency and importance, manage them across custom workspaces, and visualize your productivity with a unique heatmap. Seamlessly syncs across Apple devices.

**Highlights:** Eisenhower Matrix prioritization, Customizable workspaces, GitHub-style activity heatmap, Cross-platform Apple device support, iCloud sync and offline access, Home and Lock Screen widgets

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Must free?

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

### Is iomatrix free?

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

### Do Must or iomatrix have ads?

Neither Must nor iomatrix shows ads.

### Which is updated more often, Must or iomatrix?

Must ships an update every 2 months, and iomatrix every 6 days. Most recently, Must was updated on October 10, 2026 and iomatrix on October 13, 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.*