Conversion Wizard vs SlipBox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Conversion Wizard
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CONVERSION WIZARD is a one-stop utility for common unit conversions. They include: • Length • Power • Area • Volume • Weight • Temperature • Speed • Frequency & Wavelength • Data Storage • Angle • Recipe • Time Conversion Wizard is easy to use. it includes a User Guide in pdf format, suitable for viewing within-app or sharing to an external printer.
SlipBox
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.
- Continuous scroll interface
- Zettelkasten method implementation
- Intentional tagging system
- Minimalist design
- Privacy-first, local storage
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Stop burying your ideas in digital graveyards and start building a structured web of knowledge with the original Zettelkasten method. SlipBox is a minimalist note-taking tool designed for those who value intentionality over automation. By digitizing Niklas Luhmann’s legendary paper-and-pen system, SlipBox replaces complex folders and confusing backlinks with a unique, continuous scrolling interface. This design forces you to physically move through your ideas, facilitating the active recall and spontaneous pattern recognition necessary for deep cognitive work. Key Features for Your Second Brain: Continuous Scroll Interface View your notes in a single, fluid stream to rediscover forgotten insights and spark new ideas. The Luhmann Workflow A digital implementation of the Zettelkasten method that respects the principle of atomicity (one idea per card). Intentional Tagging Organize notes manually to build deep mental maps and avoid the "out of sight, out of mind" trap of folders. Minimalist Design No steep learning curves or bloated features, just you and your knowledge. Privacy-First & Local Your data stays on your device, ensuring your private thoughts remain truly private. Build a knowledge system that grows with you. Turn your fleeting notes into a structured, permanent repository of thought with SlipBox.
Screenshots
Verdict
The clearest difference is price: Conversion Wizard at Free against SlipBox's $0.99. Conversion Wizard also leads on update cadence (every 9 days vs every 3 weeks) and iOS requirement (16.0 vs 18.2). SlipBox's advantage is chart position (#188 vs unranked). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Conversion Wizard is free to download; SlipBox costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Conversion Wizard ships an update every 9 days, SlipBox every 3 weeks. The most recent releases landed on September 15, 2026 and September 19, 2026 respectively.
| Parameter | Conversion Wizard | SlipBox |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | — | 3.3 (3 ratings) — better |
| Positive reviews | — | 87.5% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 9 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Best chart rank | — | #188 — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 5 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Neil Rohan | Ozlem AKBUDAK |
In-app purchases
Conversion Wizard
No in-app purchases
SlipBox
No in-app purchases
Questions
Is Conversion Wizard free?
Is SlipBox free?
Do Conversion Wizard or SlipBox have ads?
Which is updated more often, Conversion Wizard or SlipBox?
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