# StackTrackr vs PulseLine

The clearest difference is ads: StackTrackr at none against PulseLine's shown. StackTrackr also leads on update cadence (weekly vs every 4 months). PulseLine's advantage is iOS requirement (17.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. StackTrackr sells 3 in-app purchases, starting at $8.99 per month and PulseLine sells 2 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

StackTrackr ships an update weekly, PulseLine every 4 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | StackTrackr | PulseLine |
| --- | --- | --- |
| 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** | Yes |
| Update frequency | **Weekly** | Every 4 months |
| Monetization | Freemium | — |
| Size | 64 MB | 28 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [PeakHaus Fitness LLC](https://appshunter.io/developer/1879898877) | [Denis Drokov](https://appshunter.io/developer/1863683503) |

## 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 (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro — Monthly | $8.99 | per month |
| Pro — 6 Months | $24.99 | per 6 months |
| Pro — Annual | $69.99 | per year |


### PulseLine

[App page](https://appshunter.io/ios/app/pulseline-heart-rate/id6771007874)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $7.99 | per 7 days |
| Quarterly Premium | $29.99 | per 3 months |


## Frequently asked questions

### Is StackTrackr free?

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

### Is PulseLine free?

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

### Do StackTrackr or PulseLine have ads?

PulseLine shows ads; StackTrackr does not.

### Which is updated more often, StackTrackr or PulseLine?

StackTrackr ships an update weekly, and PulseLine every 4 months. Most recently, StackTrackr was updated on October 25, 2026 and PulseLine on October 24, 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.*