# Stack vs TRT Vault Testosterone Tracker

The clearest difference is in-app purchases: Stack at none against TRT Vault Testosterone Tracker's 2. TRT Vault Testosterone Tracker's advantage is iOS requirement (15.1 vs 26.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. TRT Vault Testosterone Tracker sells 2 in-app purchases, starting at $9.99 per month. Stack asks for nothing beyond the download.

Stack ships an update every 10 days, TRT Vault Testosterone Tracker every 11 days. The most recent releases landed on October 2, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Stack | TRT Vault Testosterone Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stack-gym-tracker/id6760980211/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 11 days |
| Monetization | Free | — |
| Size | 22 MB | 44 MB |
| Requires iOS | 26.2 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Lauterstar Technologies, Inc](https://appshunter.io/developer/6794436202) | [Jacob Teague](https://appshunter.io/developer/1891391911) |

## What reviewers say

### Stack

[App page](https://appshunter.io/ios/app/stack-gym-tracker/id6760980211)

This app helps users track their weightlifting progress with a focus on ease of use and data privacy. It allows for detailed logging of sets, exercise planning, and visual progress tracking without ads or intrusive notifications.

**Highlights:** Distraction-free lifting log, Local-first data storage with optional iCloud sync, Customizable splits and routines, Extensive exercise library with muscle mapping, Detailed per-set logging, Plate calculator for real-world racks, Progress visualization and trend analysis

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

**In-app purchases:** none


### TRT Vault Testosterone Tracker

[App page](https://appshunter.io/ios/app/trt-vault-testosterone-tracker/id6762535061)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TRT Vault Pro | $9.99 | per month |
| TRT Vault Pro Annual | $69.99 | per year |


## Frequently asked questions

### Is Stack free?

Stack is free to download, with no in-app purchases.

### Is TRT Vault Testosterone Tracker free?

TRT Vault Testosterone Tracker is free to download, with in-app purchases available.

### Do Stack or TRT Vault Testosterone Tracker have ads?

Neither Stack nor TRT Vault Testosterone Tracker shows ads.

### Which is updated more often, Stack or TRT Vault Testosterone Tracker?

Stack ships an update every 10 days, and TRT Vault Testosterone Tracker every 11 days. Most recently, Stack was updated on October 2, 2026 and TRT Vault Testosterone Tracker on September 26, 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.*