# UnderForge vs GrabGains

The clearest difference is update cadence: GrabGains at every 4 days against UnderForge's every 10 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. UnderForge sells 3 in-app purchases, starting at $3.99 per 7 days and GrabGains sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

UnderForge ships an update every 10 days, GrabGains every 4 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | UnderForge | GrabGains |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 4 days** |
| Size | 128 MB | 62 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 17+ | 17+ |
| Developer | [Venture CO Group Korlatolt Felelossegu Tarsasag](https://appshunter.io/developer/6800294425) | [GrabGains](https://appshunter.io/developer/6792568342) |

## What reviewers say

### UnderForge

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

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnderForge Premium Weekly | $3.99 | per 7 days |
| UnderForge Premium Quarterly | $29.99 | per 3 months |
| UnderForge Premium Yearly | $89.99 | per year |


### GrabGains

[App page](https://appshunter.io/ios/app/grabgains-workout-tracker/id6792568340)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GrabGains Premium | $8.99 | per month |
| GrabGains Premium | $49.99 | per year |


## Frequently asked questions

### Is UnderForge free?

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

### Is GrabGains free?

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

### Do UnderForge or GrabGains have ads?

Neither UnderForge nor GrabGains shows ads.

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

UnderForge ships an update every 10 days, and GrabGains every 4 days. Most recently, UnderForge was updated on November 9, 2026 and GrabGains on October 31, 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.*