# NousPDF vs CalmCatch

The clearest difference is in-app purchases: NousPDF at none against CalmCatch's 2. CalmCatch's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. CalmCatch sells 2 in-app purchases, starting at $7.99 per month. NousPDF asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | NousPDF | CalmCatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calmcatch-adhd-planner/id6783648659/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 weeks | Every 4 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 72 MB | 6 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Duong The](https://appshunter.io/developer/1826213498) | [敏 刘](https://appshunter.io/developer/6783576055) |

## What reviewers say

### NousPDF

[App page](https://appshunter.io/ios/app/nouspdf-ai-pdf-reader-and-chat/id6762754092)

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

**In-app purchases:** none


### CalmCatch

[App page](https://appshunter.io/ios/app/calmcatch-adhd-planner/id6783648659)

This app helps manage overwhelming thoughts and tasks with a simple capture-first approach. It transforms scattered ideas into actionable tasks, scheduled events, and organized notes, making it easier to manage ADHD-style planning.

**Highlights:** Brain dump for messy thoughts, Task overload management, Capture first, organize later workflow, Separates thoughts into tasks, events, notes, ADHD-style planning support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calm Catch Pro Month | $7.99 | per month |
| Calm Catch Pro Year | $49.99 | per year |


## Frequently asked questions

### Is NousPDF free?

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

### Is CalmCatch free?

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

### Do NousPDF or CalmCatch have ads?

NousPDF shows ads; CalmCatch does not.

### Which is updated more often, NousPDF or CalmCatch?

NousPDF ships an update every 4 weeks, and CalmCatch every 4 weeks. Most recently, NousPDF was updated on October 24, 2026 and CalmCatch on October 28, 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.*