# UnderForge vs TANK

The clearest difference is in-app purchases: UnderForge at none against TANK's 10. TANK's advantage is update cadence (every 3 days vs every 9 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. TANK sells 10 in-app purchases, starting at $5.99 per month. UnderForge asks for nothing beyond the download.

UnderForge ships an update every 9 days, TANK every 3 days. The most recent releases landed on September 28, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | UnderForge | TANK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/tank-workout-tracker-and-logger/id6770412864/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 126 MB | 119 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Venture CO Group Korlatolt Felelossegu Tarsasag](https://appshunter.io/developer/6800294425) | [ROBERT GUNNAR BARKLUND](https://appshunter.io/developer/1833676844) |

## What reviewers say

### UnderForge

[App page](https://appshunter.io/ios/app/underforge/id6758098630)

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

**In-app purchases:** none


### TANK

[App page](https://appshunter.io/ios/app/tank-workout-tracker-and-logger/id6770412864)

This AI-powered fitness app provides detailed technique analysis for various exercises, from weightlifting to sports. It offers personalized training programs, automatic workout tracking, and integrates with Apple Health for a comprehensive fitness experience.

**Highlights:** AI technique analysis with form scoring, Extensive exercise library (604 exercises), Personalized and ready-made workout programs, Automatic workout data tracking, Integration with Apple Health and heart rate monitors, Multiple analysis levels (Quick and Deep), Exercise instruction videos and camera guides

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GetMyCoach Basic | $5.99 | per month |
| GetMyCoach Plus | $7.99 | per month |
| GetMyCoach Pro | $9.99 | per month |
| GetMyCoach Light | $49.99 | per year |
| GetMyCoach Basic | $59.99 | per year |
| GetMyCoach Plus | $79.99 | per year |
| GetMyCoach Pro | $99.99 | per year |
| GetMyCoach Credits Smal | $2.99 | one-time |
| Medium Pack | $5.99 | one-time |
| GetMyCoach Credits Big | $11.99 | one-time |


## Frequently asked questions

### Is UnderForge free?

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

### Is TANK free?

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

### Do UnderForge or TANK have ads?

Neither UnderForge nor TANK shows ads.

### Which is updated more often, UnderForge or TANK?

UnderForge ships an update every 9 days, and TANK every 3 days. Most recently, UnderForge was updated on September 28, 2026 and TANK on October 14, 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.*