# Forge vs Duo

The clearest difference is in-app purchases: Duo at none against Forge's 7. Duo also leads on update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Forge sells 7 in-app purchases, starting at $4.99 per month. Duo asks for nothing beyond the download.

Forge ships an update fortnightly, Duo every 2 days. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Forge | Duo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (25 ratings)](https://appshunter.io/ios/app/forge-75-days-hard-challenge/id6746106520/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Freemium | — |
| Size | 48 MB | 13 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [Rogelio Lopez](https://appshunter.io/developer/1513047188) | [Ruud Slagers](https://appshunter.io/developer/1873281390) |

## What reviewers say

### Forge

[App page](https://appshunter.io/ios/app/forge-75-days-hard-challenge/id6746106520)

This app provides a structured system to help users complete challenging habit-building programs like 75 Hard, 75 Soft, and custom durations. It offers daily task tracking, visual progress monitoring, community support, and built-in tools to maintain motivation and discipline.

**Highlights:** Daily task checklist, Visual grid tracker, Progress photos, Water tracker, Built-in timers, Community chat, Customizable challenges

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 75 Forge Premium Monthly | $4.99 | per month |
| 75 Forge Premium Weekly | $7.99 | per 7 days |
| 75 Hard Premium Monthly | $12.99 | per month |
| 75 Forge Special Offer | $12.99 | per year |
| Forge Discount Offer | $19.99 | per year |
| 75 Hard Premium Yearly | $19.99 | per year |
| 75 Hard Premium Annual | $39.99 | per year |


### Duo

[App page](https://appshunter.io/ios/app/duo-75-hard-challenge/id6819230205)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Forge free?

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

### Is Duo free?

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

### Do Forge or Duo have ads?

Neither Forge nor Duo shows ads.

### Which is updated more often, Forge or Duo?

Forge ships an update fortnightly, and Duo every 2 days. Most recently, Forge was updated on November 8, 2026 and Duo on November 6, 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.*