# SweatStacks vs SENTINEL FORGE

The clearest difference is in-app purchases: SweatStacks at none against SENTINEL FORGE's 10. SENTINEL FORGE's advantage is update cadence (every 4 days vs every 10 days) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. SENTINEL FORGE sells 10 in-app purchases, starting at $24.99 per month. SweatStacks asks for nothing beyond the download.

SweatStacks ships an update every 10 days, SENTINEL FORGE every 4 days. The most recent releases landed on September 15, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | SweatStacks | SENTINEL FORGE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/sentinel-forge/id6770120535/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 740 MB | 116 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Oftring Ventures, LLC](https://appshunter.io/developer/1590945542) | [ANQ LLC](https://appshunter.io/developer/1896717063) |

## What reviewers say

### SweatStacks

[App page](https://appshunter.io/ios/app/sweatstacks/id6458591124)

**Features:** macOS Compatibility

**In-app purchases:** none


### SENTINEL FORGE

[App page](https://appshunter.io/ios/app/sentinel-forge/id6770120535)

This app offers AI-driven fitness and performance tracking for athletes and serious lifters. It analyzes biometric data from wearables to provide personalized workouts, readiness scores, and even marksmanship training.

**Highlights:** AI-personalized workout programming, Daily TALOS readiness scoring, Integrated marksmanship training drills, Apple Health and wearable integration, Conversational AI training coach, Lab result and body composition analysis

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sentinel — Monthly | $24.99 | per month |
| AI Voice Logging - 25 Pack | $7.99 | one-time |
| Nutrition Lookup - 25 Pack | $7.99 | one-time |
| AI Meal Plan - 5 Pack | $7.99 | one-time |
| AI Campaign Generation - Single Use | $9.99 | one-time |
| TALOS Daily Assessment - 30 Pack | $14.99 | one-time |
| AI Form Check - 10 Pack | $14.99 | one-time |
| AI Coach Chat - 25 Pack | $14.99 | one-time |
| AI-Generated FITREP - 5 Pack | $19.99 | one-time |
| AI Campaign Generation — 3 Pack | $24.99 | one-time |


## Frequently asked questions

### Is SweatStacks free?

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

### Is SENTINEL FORGE free?

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

### Do SweatStacks or SENTINEL FORGE have ads?

Neither SweatStacks nor SENTINEL FORGE shows ads.

### Which is updated more often, SweatStacks or SENTINEL FORGE?

SweatStacks ships an update every 10 days, and SENTINEL FORGE every 4 days. Most recently, SweatStacks was updated on September 15, 2026 and SENTINEL FORGE on September 21, 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.*