# BioSign Protokoll vs Melt

The clearest difference is in-app purchases: BioSign Protokoll at none against Melt's 2. BioSign Protokoll also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Melt sells 2 in-app purchases, starting at $5.99 per 7 days. BioSign Protokoll asks for nothing beyond the download.

BioSign Protokoll ships an update every 4 months, Melt every 2 months. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | BioSign Protokoll | Melt |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 95 MB | 3 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [BioSign GmbH](https://appshunter.io/developer/1519501157) | [Artem Ivanov](https://appshunter.io/developer/1853068888) |

## What reviewers say

### BioSign Protokoll

[App page](https://appshunter.io/ios/app/biosign-protokoll/id1519501155)

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

**In-app purchases:** none


### Melt

[App page](https://appshunter.io/ios/app/melt-crush-comment-maker/id6756028563)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Melt Pass Weekly | $5.99 | per 7 days |
| Melt Pass Yearly | $17.99 | per year |


## Frequently asked questions

### Is BioSign Protokoll free?

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

### Is Melt free?

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

### Do BioSign Protokoll or Melt have ads?

Neither BioSign Protokoll nor Melt shows ads.

### Which is updated more often, BioSign Protokoll or Melt?

BioSign Protokoll ships an update every 4 months, and Melt every 2 months. Most recently, BioSign Protokoll was updated on October 25, 2026 and Melt on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*