# Peptide Tracker & Calculator vs Stackr

The clearest difference is rating: Peptide Tracker & Calculator at 4.8 against Stackr's 4.4. Peptide Tracker & Calculator also leads on ratings volume (573 vs 174). Stackr's advantage is chart position (#205 vs unranked). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Peptide Tracker & Calculator sells 4 in-app purchases, starting at $3.99 per month and Stackr sells 7 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Peptide Tracker & Calculator holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 573 and 174 respectively. Written reviews point the same way: 70% of Peptide Tracker & Calculator's written reviews are positive against 67% of Stackr's.

Peptide Tracker & Calculator ships an update every 2 days, Stackr every 4 days. The most recent releases landed on October 20, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Peptide Tracker & Calculator | Stackr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (573 ratings)](https://appshunter.io/ios/app/peptide-tracker-and-calculator/id6744902384/reviews)** | [4.4 (174 ratings)](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587/reviews) |
| Number of ratings | **573** | 174 |
| Positive reviews | **69.8% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 days |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | — | **#205** |
| Size | 58 MB | 88 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [David Dzeveckij](https://appshunter.io/developer/1808720973) | [Stackr Holdings LLC](https://appshunter.io/developer/1896525659) |

## What reviewers say

### Peptide Tracker & Calculator

[App page](https://appshunter.io/ios/app/peptide-tracker-and-calculator/id6744902384)

This app helps you meticulously track and calculate peptide dosages, inventory, and injection sites. It provides smart alerts for low stock and detailed logs of your usage history for research, fitness, or therapeutic protocols. Your data is stored securely and privately on your device.

**Highlights:** Comprehensive peptide inventory management, Precise dosing log and calculation support, Intelligent injection site rotation tracking, Smart low stock alerts, Detailed dose history review, Secure local data storage

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full App Access (Monthly) | $3.99 | per month |
| Full App Access (Monthly) | $4.99 | per month |
| Full App Access (Yearly) | $19.99 | per year |
| Full App Access (Yearly) | $24.99 | per year |


### Stackr

[App page](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587)

**Currently charting:** #205 Top Free · Health & Fitness (US App Store)

This app simplifies tracking peptide and GLP-1 doses, including supplies like vials and pens. It offers smart reminders, home screen widgets, and visual charts of estimated active levels based on half-life. Designed for users managing peptide protocols, it keeps your dosing information organized and accessible.

**Highlights:** Log peptide and GLP-1 doses, Track vials, pens, and other supplies, Smart reminders for next doses, Home screen widgets, Estimated active level charts, Multi-peptide stack tracking, Reference pages for common compounds

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stackr+ Weekly | $7.99 | per 7 days |
| Monthly | $12.99 | per month |
| Stackr+ Yearly | $29.99 | per year |
| Stackr+ Yearly | $49.99 | per year |
| Stackr+ Yearly | $49.99 | per year |
| Stackr+ Yearly | $59.99 | per year |
| Yearly | $69.99 | per year |


## Frequently asked questions

### Is Peptide Tracker & Calculator free?

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

### Is Stackr free?

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

### Which has better reviews, Peptide Tracker & Calculator or Stackr?

Peptide Tracker & Calculator is rated higher. Peptide Tracker & Calculator averages 4.8 out of 5 from 573 ratings, while Stackr averages 4.4 from 174 ratings.

### Do Peptide Tracker & Calculator or Stackr have ads?

Neither Peptide Tracker & Calculator nor Stackr shows ads.

### Which is updated more often, Peptide Tracker & Calculator or Stackr?

Peptide Tracker & Calculator ships an update every 2 days, and Stackr every 4 days. Most recently, Peptide Tracker & Calculator was updated on October 20, 2026 and Stackr on October 18, 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.*