# Peptide Tracker & Dosage vs Stackr

The clearest difference is review sentiment: Stackr at 67% against Peptide Tracker & Dosage's 38%. Stackr also leads on update cadence (every 4 days vs every 9 days). Peptide Tracker & Dosage's advantage is rating (4.7 vs 4.4) and device support (3 vs 1). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Peptide Tracker & Dosage sells 9 in-app purchases, starting at $2.99 per 7 days 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 & Dosage holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 138 and 191 respectively. Written reviews complicate that: 38% of Peptide Tracker & Dosage's written reviews are positive against 67% of Stackr's, so the app with the better star average is not the one people write more warmly about.

Peptide Tracker & Dosage ships an update every 9 days, Stackr every 4 days. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Peptide Tracker & Dosage | Stackr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (138 ratings)](https://appshunter.io/ios/app/peptide-tracker-and-dosage/id6758891178/reviews)** | [4.4 (191 ratings)](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587/reviews) |
| Number of ratings | 138 | **191** |
| Positive reviews | 37.5% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | Freemium | Freemium |
| Size | 67 MB | 88 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Heat Studio LLC](https://appshunter.io/developer/1766372656) | [Stackr Holdings LLC](https://appshunter.io/developer/1896525659) |

## What reviewers say

### Peptide Tracker & Dosage

[App page](https://appshunter.io/ios/app/peptide-tracker-and-dosage/id6758891178)

Easily calculate peptide dosages with this straightforward tool. It helps determine reconstitution ratios and injection volumes based on your inputs. Manage your peptide inventory, track your progress, and review past dosing with helpful features.

**Highlights:** Peptide dosage calculation, Reconstitution ratio determination, Injection volume calculation, Inventory tracking, Protocol planning, Activity logging, Dosing history review

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited - Weekly | $2.99 | per 7 days |
| Unlimited - Weekly | $2.99 | per 7 days |
| Unlimited - Monthly | $6.99 | per month |
| Unlimited - Monthly | $9.99 | per month |
| Unlimited - Monthly | $12.99 | per month |
| Unlimited - Annual | $24.99 | per year |
| Unlimited - Annual | $39.99 | per year |
| Unlimited - Annual | $39.99 | per year |
| Unlimited - Lifetime | $59.99 | one-time |


### Stackr

[App page](https://appshunter.io/ios/app/stackr-peptide-glp-1-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 & Dosage free?

Peptide Tracker & Dosage 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 & Dosage or Stackr?

Peptide Tracker & Dosage is rated higher. Peptide Tracker & Dosage averages 4.7 out of 5 from 138 ratings, while Stackr averages 4.4 from 191 ratings.

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

Neither Peptide Tracker & Dosage nor Stackr shows ads.

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

Peptide Tracker & Dosage ships an update every 9 days, and Stackr every 4 days. Most recently, Peptide Tracker & Dosage was updated on October 21, 2026 and Stackr on October 25, 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.*