# Sleep Harmony vs Peptide Tracker

The clearest difference is in-app purchases: Sleep Harmony at none against Peptide Tracker's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Peptide Tracker sells 2 in-app purchases, starting at $4.99 per 7 days. Sleep Harmony asks for nothing beyond the download.

Sleep Harmony ships an update every 7 months, Peptide Tracker every 4 months. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Sleep Harmony | Peptide Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.9 (7 ratings)](https://appshunter.io/ios/app/peptide-tracker-peptrak/id6759543579/reviews)** |
| Number of ratings | — | **7** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 months** |
| Monetization | — | Free |
| Size | 144 MB | 45 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Ergomotion, Inc.](https://appshunter.io/developer/765697157) | [Ankur Dhameliya](https://appshunter.io/developer/1560934425) |

## What reviewers say

### Sleep Harmony

[App page](https://appshunter.io/ios/app/sleep-harmony/id6743784636)

**Features:** macOS Compatibility

**In-app purchases:** none


### Peptide Tracker

[App page](https://appshunter.io/ios/app/peptide-tracker-peptrak/id6759543579)

This app offers precise peptide calculations for researchers and lab professionals. It simplifies reconstitution, dilution, and mixing ratios with an intuitive interface and saves all your calculations for easy access and tracking.

**Highlights:** Syringe unit conversions, Save and edit calculations, Peptide reconstitution guide, Mixing ratio calculator, Bacteriostatic water calculations, Peptide library resource, Easy recalculation

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $4.99 | per 7 days |
| Premium Annual | $29.99 | per year |


## Frequently asked questions

### Is Sleep Harmony free?

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

### Is Peptide Tracker free?

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

### Do Sleep Harmony or Peptide Tracker have ads?

Neither Sleep Harmony nor Peptide Tracker shows ads.

### Which is updated more often, Sleep Harmony or Peptide Tracker?

Sleep Harmony ships an update every 7 months, and Peptide Tracker every 4 months. Most recently, Sleep Harmony was updated on October 25, 2026 and Peptide Tracker on October 22, 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.*