# Peptide Tracker Log & Reminder vs Stackr

The clearest difference is rating: Peptide Tracker Log & Reminder at 4.9 against Stackr's 4.5. Peptide Tracker Log & Reminder also leads on monetization model (free vs freemium) and review sentiment (97% vs 78%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Peptide Tracker Log & Reminder sells 8 in-app purchases, starting at $20.00 per year 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 Log & Reminder holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: Peptide Tracker Log & Reminder has 2.2K ratings behind it against 126, so its average is the more settled of the two. Written reviews point the same way: 97% of Peptide Tracker Log & Reminder's written reviews are positive against 78% of Stackr's.

Peptide Tracker Log & Reminder ships an update every 2 days, Stackr every 3 days. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Peptide Tracker Log & Reminder | Stackr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (2.2K ratings)](https://appshunter.io/ios/app/peptide-tracker-log-and-reminder/id6763939355/reviews)** | [4.5 (126 ratings)](https://appshunter.io/ios/app/stackr-peptide-tracker/id6764821587/reviews) |
| Number of ratings | **2.2K** | 126 |
| Positive reviews | **97.0% of reviews** | 78.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Monetization | **Free** | Freemium |
| Size | 78 MB | 58 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Flat Six Labs LLC](https://appshunter.io/developer/1236587028) | [Stackr Holdings LLC](https://appshunter.io/developer/1896525659) |

## What reviewers say

### Peptide Tracker Log & Reminder

[App page](https://appshunter.io/ios/app/peptide-tracker-log-and-reminder/id6763939355)

Organize your peptide protocols, track doses, manage vial inventory, and monitor weight trends. Includes built-in calculators and optional reminders to ensure consistency. Access educational content and a helpful assistant for general information.

**Highlights:** Protocol creation with custom schedules, Dose logging with notes and site tracking, Vial inventory management, Body weight tracking, Built-in reconstitution and conversion calculators, Dose history review, Optional dose reminders

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Founding Member | $20.00 | per year |
| Founding Member | $30.00 | per year |
| Founding Member | $40.00 | per year |
| Founding Member | $50.00 | per year |
| Founding Member | $60.00 | per year |
| Founding Member | $70.00 | per year |
| Founding Member | $80.00 | per year |
| Tip | $5.00 | one-time |


### Stackr

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

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 Log & Reminder free?

Peptide Tracker Log & Reminder 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 Log & Reminder or Stackr?

Peptide Tracker Log & Reminder is rated higher. Peptide Tracker Log & Reminder averages 4.9 out of 5 from 2.2K ratings, while Stackr averages 4.5 from 126 ratings.

### Do Peptide Tracker Log & Reminder or Stackr have ads?

Neither Peptide Tracker Log & Reminder nor Stackr shows ads.

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

Peptide Tracker Log & Reminder ships an update every 2 days, and Stackr every 3 days. Most recently, Peptide Tracker Log & Reminder was updated on September 23, 2026 and Stackr on September 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.*