# Stack Tracker AI vs QuietGains

The clearest difference is update cadence: QuietGains at every 5 days against Stack Tracker AI's fortnightly. On price, ads, in-app purchases and device support 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 QuietGains sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Stack Tracker AI ships an update fortnightly, QuietGains every 5 days. The most recent releases landed on September 17, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Stack Tracker AI | QuietGains |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/stack-tracker-ai/id6740147043/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Freemium | — |
| Size | 28 MB | 154 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [MD Apps, LLC](https://appshunter.io/developer/346437629) | [Mohamed Ashraf](https://appshunter.io/developer/6796022900) |

## 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 |


### QuietGains

[App page](https://appshunter.io/ios/app/quietgains-gym-tracker/id6796022898)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $6.99 | per month |
| Premium Annual | $59.99 | per year |


## Frequently asked questions

### Is Stack Tracker AI free?

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

### Is QuietGains free?

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

### Do Stack Tracker AI or QuietGains have ads?

Neither Stack Tracker AI nor QuietGains shows ads.

### Which is updated more often, Stack Tracker AI or QuietGains?

Stack Tracker AI ships an update fortnightly, and QuietGains every 5 days. Most recently, Stack Tracker AI was updated on September 17, 2026 and QuietGains on October 8, 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.*