# Gain Weight vs Dayhack

The clearest difference is update cadence: Dayhack at every 4 days against Gain Weight's monthly. Dayhack also leads on iOS requirement (13.0 vs 16.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Gain Weight sells 3 in-app purchases, starting at $5.99 per month and Dayhack sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Gain Weight ships an update monthly, Dayhack every 4 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Gain Weight | Dayhack |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Size | 80 MB | 53 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Max Mannstein](https://appshunter.io/developer/1695910526) | [Victor Laybats](https://appshunter.io/developer/6781441777) |

## What reviewers say

### Gain Weight

[App page](https://appshunter.io/ios/app/gain-weight-ubulk/id6790460135)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UBulk Pro Monthly | $5.99 | per month |
| UBulk Pro Weekly | $5.99 | per 7 days |
| UBulk Pro Yearly | $34.99 | per year |


### Dayhack

[App page](https://appshunter.io/ios/app/dayhack-biohacking-journal/id6815590327)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Takehold Plus monthly | $4.99 | per month |
| Takehold Plus yearly | $29.99 | per year |
| Takehold Plus | $59.99 | one-time |


## Frequently asked questions

### Is Gain Weight free?

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

### Is Dayhack free?

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

### Do Gain Weight or Dayhack have ads?

Neither Gain Weight nor Dayhack shows ads.

### Which is updated more often, Gain Weight or Dayhack?

Gain Weight ships an update monthly, and Dayhack every 4 days. Most recently, Gain Weight was updated on November 1, 2026 and Dayhack 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.*