# Stack Tracker AI vs Peptide & TRT Tracker

The clearest difference is review sentiment: Peptide & TRT Tracker at 89% against Stack Tracker AI's 0%. Peptide & TRT Tracker also leads on rating (4.8 vs 4.0) and ratings volume (174 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Stack Tracker AI sells 2 in-app purchases, starting at $1.99 per month and Peptide & TRT Tracker sells 19 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Peptide & TRT Tracker holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Peptide & TRT Tracker has 174 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Stack Tracker AI's written reviews are positive against 89% of Peptide & TRT Tracker's.

Stack Tracker AI ships an update fortnightly, Peptide & TRT Tracker weekly. The most recent releases landed on September 17, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Stack Tracker AI | Peptide & TRT Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/stack-tracker-ai/id6740147043/reviews) | **[4.8 (174 ratings)](https://appshunter.io/ios/app/peptide-and-trt-tracker-optipin/id6745631936/reviews)** |
| Number of ratings | 2 | **174** |
| Positive reviews | 0.0% of reviews | **88.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 28 MB | 105 MB |
| Requires iOS | 26.0 | **18.1** |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [MD Apps, LLC](https://appshunter.io/developer/346437629) | [Vitaloom LTD](https://appshunter.io/developer/1796722152) |

## What reviewers say

### Stack Tracker AI

[App page](https://appshunter.io/ios/app/stack-tracker-ai/id6740147043)

Effortlessly track, analyze, and optimize your supplement intake for improved wellness and fitness. Gain AI-powered insights, set flexible schedules, and visualize your progress with secure, private data storage.

**Highlights:** Seamless daily supplement tracking, AI-powered insights and trends, Flexible dose scheduling, Advanced progress visualizations, Private and secure data storage, Customizable supplement types

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $9.99 | per year |


### Peptide & TRT Tracker

[App page](https://appshunter.io/ios/app/peptide-and-trt-tracker-optipin/id6745631936)

This app helps users track TRT, peptide therapy, and hormone optimization protocols. It offers medication reminders, injection site rotation, inventory management, and health marker trend analysis. All data is stored securely on your device for privacy.

**Highlights:** Smart injection scheduling, Discreet medication reminders, Advanced peptide calculators, Injection site rotation tracking, Comprehensive health tracking, Custom protocol creation, Inventory management

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $4.99 | per month |
| Yearly subscription | $9.99 | per year |
| Yearly subscription | $19.99 | per year |
| Yearly subscription | $19.99 | per year |
| Yearly subscription | $24.99 | per year |
| Yearly subscription | $24.99 | per year |
| Yearly subscription | $34.99 | per year |
| Annual Sub | $39.99 | per year |
| Annual Sub | $39.99 | per year |
| OptiInsight 1 Credit | $1.19 | one-time |
| OptiInsight 5 Credits | $4.99 | one-time |
| Lifetime access | $9.99 | one-time |
| Lifetime access | $14.99 | one-time |
| Lifetime access | $19.99 | one-time |
| Lifetime access | $24.99 | one-time |
| Lifetime access | $29.99 | one-time |
| Lifetime access | $34.99 | one-time |
| Lifetime access | $39.99 | one-time |
| Lifetime access | $74.99 | one-time |


## Frequently asked questions

### Is Stack Tracker AI free?

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

### Is Peptide & TRT Tracker free?

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

### Which has better reviews, Stack Tracker AI or Peptide & TRT Tracker?

Peptide & TRT Tracker is rated higher. Stack Tracker AI averages 4.0 out of 5 from 2 ratings, while Peptide & TRT Tracker averages 4.8 from 174 ratings.

### Do Stack Tracker AI or Peptide & TRT Tracker have ads?

Neither Stack Tracker AI nor Peptide & TRT Tracker shows ads.

### Which is updated more often, Stack Tracker AI or Peptide & TRT Tracker?

Stack Tracker AI ships an update fortnightly, and Peptide & TRT Tracker weekly. Most recently, Stack Tracker AI was updated on September 17, 2026 and Peptide & TRT Tracker on October 16, 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.*