# FormKey vs Kanteletar

The clearest difference is in-app purchases: Kanteletar at none against FormKey's 1. Kanteletar also leads on update cadence (every 3 days vs fortnightly) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. FormKey sells 1 one-off in-app purchase. Kanteletar asks for nothing beyond the download.

FormKey ships an update fortnightly, Kanteletar every 3 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | FormKey | Kanteletar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (8 ratings)](https://appshunter.io/ios/app/formkey/id1535350561/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | Paid | — |
| Size | 88 MB | 44 MB |
| Requires iOS | 18.6 | **14.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Polyhedra](https://appshunter.io/developer/1535350563) | [Juha Hinkula](https://appshunter.io/developer/1850686986) |

## What reviewers say

### FormKey

[App page](https://appshunter.io/ios/app/formkey/id1535350561)

This app is an intuitive MIDI controller that helps musicians improve by using shapes for notes and colors for octaves. Its unique isomorphic keys aid in pattern recognition and chord discovery, making music creation more accessible.

**Highlights:** Shape-based note input, Color-coded octaves, Isomorphic key layout, Pattern recognition aid, Chord discovery assistance, Future update commitment

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FormKey Full Unlock | $14.99 | one-time |


### Kanteletar

[App page](https://appshunter.io/ios/app/kanteletar/id6765689332)

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

**In-app purchases:** none


## Frequently asked questions

### Is FormKey free?

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

### Is Kanteletar free?

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

### Do FormKey or Kanteletar have ads?

Neither FormKey nor Kanteletar shows ads.

### Which is updated more often, FormKey or Kanteletar?

FormKey ships an update fortnightly, and Kanteletar every 3 days. Most recently, FormKey was updated on October 24, 2026 and Kanteletar on October 25, 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.*