# Fast Idea Book vs DeepFocus!

The clearest difference is in-app purchases: Fast Idea Book at none against DeepFocus!'s 1. DeepFocus!'s advantage is iOS requirement (16.1 vs 18.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DeepFocus! sells 1 one-off in-app purchase. Fast Idea Book asks for nothing beyond the download.

Fast Idea Book ships an update monthly, DeepFocus! every 4 weeks. The most recent releases landed on September 29, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Fast Idea Book | DeepFocus! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fast-idea-book/id6749139776/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 10 MB |
| Requires iOS | 18.5 | **16.1** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Bahattin Duran](https://appshunter.io/developer/1677311418) | [志文 李](https://appshunter.io/developer/1852909959) |

## What reviewers say

### Fast Idea Book

[App page](https://appshunter.io/ios/app/fast-idea-book/id6749139776)

Quickly capture fleeting thoughts via text, voice, or photo with a single tap. Access your ideas through widgets, the Share Sheet, or Siri. Organize and review them later, with advanced features unlocked via subscription.

**Highlights:** One-tap text, voice, and photo capture, Home Screen capture widget, Share Sheet integration, On-device voice transcription, Tags and quick review, Siri integration, iCloud sync

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

**In-app purchases:** none


### DeepFocus!

[App page](https://appshunter.io/ios/app/deepfocus/id6761233622)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Member | $2.99 | one-time |


## Frequently asked questions

### Is Fast Idea Book free?

Fast Idea Book is free to download, with no in-app purchases.

### Is DeepFocus! free?

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

### Do Fast Idea Book or DeepFocus! have ads?

Neither Fast Idea Book nor DeepFocus! shows ads.

### Which is updated more often, Fast Idea Book or DeepFocus!?

Fast Idea Book ships an update monthly, and DeepFocus! every 4 weeks. Most recently, Fast Idea Book was updated on September 29, 2026 and DeepFocus! 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.*