# Must vs PDF One

The clearest difference is review sentiment: Must at 91% against PDF One's 0%. Must also leads on in-app purchases (none vs 1) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. PDF One sells 1 one-off in-app purchase. Must asks for nothing beyond the download.

Must ships an update every 3 months, PDF One every 6 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Must | PDF One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/must/id6479213927/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **90.9% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 54 MB | 114 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jichan Hwang](https://appshunter.io/developer/1735193590) | [Y Mobile Solution Co. , Ltd.](https://appshunter.io/developer/1623748683) |

## 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


### PDF One

[App page](https://appshunter.io/ios/app/pdf-one-pdfs-with-ease/id6503068966)

Manage and edit PDF documents with ease. This app offers a powerful viewer, editor, and reader to merge, rotate, delete, and split PDFs. Convert PDFs to images and organize your files efficiently.

**Highlights:** PDF viewing and editing, Merge multiple PDFs, Rotate and delete pages, Split PDFs, Convert PDF to image, E-book reader functionality

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Removal (Lifetime Free) | $3.99 | one-time |


## Frequently asked questions

### Is Must free?

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

### Is PDF One free?

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

### Do Must or PDF One have ads?

PDF One shows ads; Must does not.

### Which is updated more often, Must or PDF One?

Must ships an update every 3 months, and PDF One every 6 months. Most recently, Must was updated on October 24, 2026 and PDF One on October 24, 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.*