# Lupin meter vs SlipBox

The clearest difference is price: Lupin meter at Free against SlipBox's $0.99. Lupin meter also leads on iOS requirement (8.0 vs 18.2). SlipBox's advantage is update cadence (every 3 weeks vs every 3 months). On ads, in-app purchases and device support there is nothing between them.

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

Lupin meter ships an update every 3 months, SlipBox every 3 weeks. The most recent releases landed on October 26, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Lupin meter | SlipBox |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[3.3 (4 ratings)](https://appshunter.io/ios/app/slipbox-zettelkasten-notes/id6743237863/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 90.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Paid |
| Size | 6 MB | 8 MB |
| Requires iOS | **8.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Endo Lighting Corp.](https://appshunter.io/developer/1066146118) | [Ozlem AKBUDAK](https://appshunter.io/developer/1736380201) |

## What reviewers say

### Lupin meter

[App page](https://appshunter.io/ios/app/lupin-meter/id1256856500)

**In-app purchases:** none


### 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 Lupin meter free?

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

### Is SlipBox free?

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

### Do Lupin meter or SlipBox have ads?

Neither Lupin meter nor SlipBox shows ads.

### Which is updated more often, Lupin meter or SlipBox?

Lupin meter ships an update every 3 months, and SlipBox every 3 weeks. Most recently, Lupin meter was updated on October 26, 2026 and SlipBox on November 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.*