# DoseRhythm vs Peptide Tracker Calculator App

The clearest difference is in-app purchases: DoseRhythm at none against Peptide Tracker Calculator App's 3. Peptide Tracker Calculator App's advantage is update cadence (every 3 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Peptide Tracker Calculator App sells 3 in-app purchases, starting at $1.99 per 7 days. DoseRhythm asks for nothing beyond the download.

DoseRhythm ships an update every 2 weeks, Peptide Tracker Calculator App every 3 days. The most recent releases landed on October 6, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | DoseRhythm | Peptide Tracker Calculator App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/peptide-tracker-calculator-app/id6766099370/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 46 MB | 49 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Steve Olson](https://appshunter.io/developer/1876760883) | [Erfan Ahmadi](https://appshunter.io/developer/1811688807) |

## What reviewers say

### DoseRhythm

[App page](https://appshunter.io/ios/app/doserhythm/id6759083545)

**Features:** macOS Compatibility

**In-app purchases:** none


### Peptide Tracker Calculator App

[App page](https://appshunter.io/ios/app/peptide-tracker-calculator-app/id6766099370)

Organize your peptide tracking with dose logs, schedule reminders, research references, and personal progress. Track injections, estimate active levels, and integrate with Apple Health for a comprehensive wellness overview. This app provides a structured, private workspace for managing peptide-related information.

**Highlights:** Peptide dose tracking, Half-life based active level estimates, Injection site tracking, Dose schedules and reminders, Peptide research library, Apple Health integration, PDF data export

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Pack | $1.99 | per 7 days |
| Pro Pack | $4.99 | per month |
| Pro Pack | $49.99 | per year |


## Frequently asked questions

### Is DoseRhythm free?

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

### Is Peptide Tracker Calculator App free?

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

### Do DoseRhythm or Peptide Tracker Calculator App have ads?

Neither DoseRhythm nor Peptide Tracker Calculator App shows ads.

### Which is updated more often, DoseRhythm or Peptide Tracker Calculator App?

DoseRhythm ships an update every 2 weeks, and Peptide Tracker Calculator App every 3 days. Most recently, DoseRhythm was updated on October 6, 2026 and Peptide Tracker Calculator App on September 27, 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.*