# Mnemonizer vs SlipBox

The clearest difference is price: Mnemonizer at Free against SlipBox's $0.99. Mnemonizer also leads on rating (4.8 vs 3.3) and device support (4 vs 2). SlipBox's advantage is update cadence (every 3 weeks vs every 14 months) and chart position (#129 vs unranked). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

Mnemonizer is free to download; SlipBox costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mnemonizer holds the better App Store score, 4.8 against 3.3. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews complicate that: 83% of Mnemonizer's written reviews are positive against 88% of SlipBox's, so the app with the better star average is not the one people write more warmly about.

Mnemonizer ships an update every 14 months, SlipBox every 3 weeks. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Mnemonizer | SlipBox |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/mnemonizer/id1126080651/reviews)** | [3.3 (3 ratings)](https://appshunter.io/ios/app/slipbox-zettelkasten-notes/id6743237863/reviews) |
| Number of ratings | **4** | 3 |
| Positive reviews | 83.3% of reviews | **87.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 weeks** |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#129** |
| Size | 18 MB | 8 MB |
| Requires iOS | **8.0** | 18.2 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Happymagenta UAB](https://appshunter.io/developer/1105393733) | [Ozlem AKBUDAK](https://appshunter.io/developer/1736380201) |

## What reviewers say

### Mnemonizer

[App page](https://appshunter.io/ios/app/mnemonizer/id1126080651)

This app offers a unique method to secure sensitive information like PINs and passwords by disguising them within a visually camouflaged grid of random characters. It allows users to create mnemonic cards, mentally mapping data positions for uncrackable privacy.

**Highlights:** Hide PINs and passwords, Mnemonic card system, Camouflaged data display, Automatic iCloud sync, Multiple data cards, Uncrackable security

**Features:** macOS Compatibility

**In-app purchases:** none


### SlipBox

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

**Currently charting:** #129 Top Paid · Productivity (US App Store)

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 Mnemonizer free?

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

### Is SlipBox free?

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

### Which has better reviews, Mnemonizer or SlipBox?

Mnemonizer is rated higher. Mnemonizer averages 4.8 out of 5 from 4 ratings, while SlipBox averages 3.3 from 3 ratings.

### Do Mnemonizer or SlipBox have ads?

Neither Mnemonizer nor SlipBox shows ads.

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

Mnemonizer ships an update every 14 months, and SlipBox every 3 weeks. Most recently, Mnemonizer was updated on September 23, 2026 and SlipBox on September 21, 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.*