# Smart Peptide Tracker vs StackTrax

The clearest difference is update cadence: StackTrax at daily against Smart Peptide Tracker's every 5 days. StackTrax also leads on rating (5.0 vs 4.7) and review sentiment (100% vs 86%). Smart Peptide Tracker's advantage is ratings volume (162 vs 7). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Smart Peptide Tracker sells 9 one-off in-app purchases and StackTrax sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

StackTrax holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Smart Peptide Tracker has 162 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 86% of Smart Peptide Tracker's written reviews are positive against 100% of StackTrax's.

Smart Peptide Tracker ships an update every 5 days, StackTrax daily. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Smart Peptide Tracker | StackTrax |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (162 ratings)](https://appshunter.io/ios/app/smart-peptide-tracker/id6758162412/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/stacktrax-peptide-tracker/id6769495613/reviews)** |
| Number of ratings | **162** | 7 |
| Positive reviews | 86.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Daily** |
| Monetization | Freemium | Freemium |
| Size | 114 MB | 32 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Sean Hussain](https://appshunter.io/developer/1871263008) | [Isaiah Deutsch](https://appshunter.io/developer/1896663496) |

## What reviewers say

### Smart Peptide Tracker

[App page](https://appshunter.io/ios/app/smart-peptide-tracker/id6758162412)

Manage supplement inventory, schedule routines, and track personal progress with a comprehensive research companion. Features include a reconstitution calculator, visual progress charts, and site rotation planning. Offers optional cloud sync and PIN encryption for privacy.

**Highlights:** Inventory management with reconstitution calculator, Customizable schedules and push notification reminders, One-tap logging and backfilling up to 14 days, Progress tracking with charts and photos, Stack analysis for compatibility and overlap, Visual site rotation planner, Cycle planner and cost tracker

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ai Question Pack (20 questions) | $4.99 | one-time |
| Partner Add-on | $9.99 | one-time |
| Extra Partner Add-on | $9.99 | one-time |
| Partner Biomarkers Add-on | $14.99 | one-time |
| Biomarkers Add-on | $14.99 | one-time |
| Premium Lifetime - Discount | $25.99 | one-time |
| Premium Lifetime | $34.99 | one-time |
| Peak | $44.99 | one-time |
| Elite | $54.99 | one-time |


### StackTrax

[App page](https://appshunter.io/ios/app/stacktrax-peptide-tracker/id6769495613)

Track peptide protocols and GLP-1 titrations with detailed logging, reminders, and injection site rotation. Access a research library and integrate with Oura for comprehensive health insights. Includes nutrition tracking and an AI protocol importer.

**Highlights:** Peptide and GLP-1 tracking, Dose logging and reminders, Injection site rotation, Research library with compound guides, Oura integration, AI Protocol Importer, Nutrition tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Yearly | $49.99 | per year |


## Frequently asked questions

### Is Smart Peptide Tracker free?

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

### Is StackTrax free?

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

### Which has better reviews, Smart Peptide Tracker or StackTrax?

StackTrax is rated higher. Smart Peptide Tracker averages 4.7 out of 5 from 162 ratings, while StackTrax averages 5.0 from 7 ratings.

### Do Smart Peptide Tracker or StackTrax have ads?

Neither Smart Peptide Tracker nor StackTrax shows ads.

### Which is updated more often, Smart Peptide Tracker or StackTrax?

Smart Peptide Tracker ships an update every 5 days, and StackTrax daily. Most recently, Smart Peptide Tracker was updated on October 13, 2026 and StackTrax on October 6, 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.*