BioSign Protokoll vs Melt
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BioSign Protokoll
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With this app, you can create a digital log of your activities during a 24-hour HRV (heart rate variability) measurement. This log can then be sent, for example, by email to the therapist or coach who will evaluate the HRV measurement. The interpretation of a 24-hour HRV measurement is significantly improved by a detailed log. Note This app was developed for use in conjunction with the HRV Scanner software from BioSign GmbH. It is intended solely for creating an activity log that can be decoded and evaluated by the HRV Scanner software. Without the HRV Scanner software, the app cannot be used effectively.
Melt
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Stop overthinking what to say. Start getting replies. Melt generates comments that get attention - from sweet to savage, whatever vibe you need. Three seconds to upload. One swipe to set the vibe. Five comments that actually land. Crushing on someone? Make your move with words that stand out. In a relationship? Keep surprising them with comments that hit different. Your options: - Sweet & sincere - Flirty & playful - Savage & funny - Completely devoted - Absolutely unhinged No more staring at their photo wondering what to say. Melt handles it. --- Privacy Policy: https://melt.pages.dev/privacy-policy.html Terms of Service: https://melt.pages.dev/terms-of-service.html
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | BioSign Protokoll | Melt |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 95 MB | 3 MB |
| Age rating | 4+ | 12+ |
| Developer | BioSign GmbH | Artem Ivanov |
In-app purchases
BioSign Protokoll
No in-app purchases
Melt
- Melt Pass Weekly3 Days trial$5.997 Days
- Melt Pass Yearly$17.991 Year
