# DocFlip vs SlipBox

The clearest difference is price: DocFlip at Free against SlipBox's $0.99. SlipBox's advantage is in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement there is nothing between them.

DocFlip is free to download; SlipBox costs $0.99 up front. DocFlip sells 1 one-off in-app purchase. SlipBox asks for nothing beyond the download.

DocFlip ships an update every 5 weeks, SlipBox every 3 weeks. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | DocFlip | SlipBox |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[3.3 (3 ratings)](https://appshunter.io/ios/app/slipbox-zettelkasten-notes/id6743237863/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 90.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | — | Paid |
| Size | 14 MB | 8 MB |
| Requires iOS | **17.6** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Solueman Hussain](https://appshunter.io/developer/504255127) | [Ozlem AKBUDAK](https://appshunter.io/developer/1736380201) |

## What reviewers say

### DocFlip

[App page](https://appshunter.io/ios/app/docflip/id6472786570)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Export | $2.99 | one-time |


### SlipBox

[App page](https://appshunter.io/ios/app/slipbox-zettelkasten-notes/id6743237863)

This app helps you build a structured web of knowledge using the Zettelkasten method. Its minimalist design and continuous scrolling interface encourage active recall and pattern recognition for deep cognitive work. Your notes are stored locally for privacy.

**Highlights:** Continuous scroll interface, Zettelkasten method implementation, Intentional tagging system, Minimalist design, Privacy-first, local storage

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

**In-app purchases:** none


## Frequently asked questions

### Is DocFlip free?

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

### Is SlipBox free?

SlipBox costs $0.99, with no in-app purchases.

### Do DocFlip or SlipBox have ads?

Neither DocFlip nor SlipBox shows ads.

### Which is updated more often, DocFlip or SlipBox?

DocFlip ships an update every 5 weeks, and SlipBox every 3 weeks. Most recently, DocFlip was updated on October 12, 2026 and SlipBox on October 7, 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.*