# KnifeApp vs Mental Map

The clearest difference is in-app purchases: KnifeApp at none against Mental Map's 2. Mental Map's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Mental Map sells 2 in-app purchases, starting at $3.99 per month. KnifeApp asks for nothing beyond the download.

KnifeApp ships an update fortnightly, Mental Map weekly. The most recent releases landed on September 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | KnifeApp | Mental Map |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (4 ratings)](https://appshunter.io/ios/app/knifeapp/id6737324396/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 46.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free | — |
| Size | 37 MB | 42 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Ilya Lukovnikov](https://appshunter.io/developer/1809740370) | [Alexandr Arshinov](https://appshunter.io/developer/1701780400) |

## What reviewers say

### KnifeApp

[App page](https://appshunter.io/ios/app/knifeapp/id6737324396)

Connect with fellow knife enthusiasts and digitally catalog your collection. Showcase your blades with detailed item cards and AI-enhanced photos in a dedicated community space.

**Highlights:** Digital knife catalog, AI background removal for photos, Collector community network, Shareable profiles and items, Detailed item cards

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

**In-app purchases:** none


### Mental Map

[App page](https://appshunter.io/ios/app/mental-map/id6754384719)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Features (1 month) | $3.99 | per month |
| Pro Features (1 year) | $29.99 | per year |


## Frequently asked questions

### Is KnifeApp free?

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

### Is Mental Map free?

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

### Do KnifeApp or Mental Map have ads?

Neither KnifeApp nor Mental Map shows ads.

### Which is updated more often, KnifeApp or Mental Map?

KnifeApp ships an update fortnightly, and Mental Map weekly. Most recently, KnifeApp was updated on September 24, 2026 and Mental Map on October 6, 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.*