# StackTrackr vs Peptide TRT Tracking Log

The clearest difference is iOS requirement: Peptide TRT Tracking Log at 17.0 against StackTrackr's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. StackTrackr sells 2 in-app purchases, starting at $4.99 per month and Peptide TRT Tracking Log sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

StackTrackr ships an update weekly, Peptide TRT Tracking Log every 5 days. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | StackTrackr | Peptide TRT Tracking Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/stacktrackr-peptide-tracker/id6759632056/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Freemium | — |
| Size | 60 MB | 48 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [PeakHaus Fitness LLC](https://appshunter.io/developer/1879898877) | [kawaldeep gill](https://appshunter.io/developer/6772362829) |

## What reviewers say

### StackTrackr

[App page](https://appshunter.io/ios/app/stacktrackr-peptide-tracker/id6759632056)

This app helps manage hormone therapy, peptide protocols, and research compounds. It calculates doses, tracks injections, manages vial inventory, and builds custom schedules. Log doses quickly from your watch or widgets, and access a database of verified compounds.

**Highlights:** Reconstitution calculator, Dose tracking and logging, Multi-compound protocol management, Vial inventory management, Streak tracking, Verified compound database, Apple Health integration

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro — Monthly | $4.99 | per month |
| Pro — 6 Months | $24.99 | per 6 months |


### Peptide TRT Tracking Log

[App page](https://appshunter.io/ios/app/peptide-trt-tracking-log-zap/id6772362827)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZAP Premium Monthly | $9.99 | per month |
| ZAP Premium Yearly | $59.99 | per year |


## Frequently asked questions

### Is StackTrackr free?

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

### Is Peptide TRT Tracking Log free?

Peptide TRT Tracking Log is free to download, with in-app purchases available.

### Do StackTrackr or Peptide TRT Tracking Log have ads?

Neither StackTrackr nor Peptide TRT Tracking Log shows ads.

### Which is updated more often, StackTrackr or Peptide TRT Tracking Log?

StackTrackr ships an update weekly, and Peptide TRT Tracking Log every 5 days. Most recently, StackTrackr was updated on October 14, 2026 and Peptide TRT Tracking Log on October 7, 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.*