# 75 Day Tough Challenge vs Delta

The clearest difference is ads: Delta at none against 75 Day Tough Challenge's shown. Delta also leads on update cadence (every 3 days vs every 9 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. 75 Day Tough Challenge sells 8 in-app purchases, starting at $9.99 per year and Delta sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

75 Day Tough Challenge ships an update every 9 days, Delta every 3 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 75 Day Tough Challenge | Delta |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (82 ratings)](https://appshunter.io/ios/app/75-day-tough-challenge/id6683300982/reviews)** | — |
| Number of ratings | **82** | — |
| Positive reviews | 46.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 122 MB | 62 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Innonexa Tech Private Limited](https://appshunter.io/developer/1763386442) | [MITHUN NATH EDAKKATTU MAYOORANADHAN](https://appshunter.io/developer/1866326672) |

## What reviewers say

### 75 Day Tough Challenge

[App page](https://appshunter.io/ios/app/75-day-tough-challenge/id6683300982)

This app helps you build discipline and track habits for various 75-day challenges, including 75 Soft, 75 Medium, and 75 Mom. It offers customizable habit tracking, progress visualization, and smart reminders to keep you consistent and accountable.

**Highlights:** Track 75 Soft, Medium, or Mom challenges, Customize up to 6 daily habits, Visual streak and progress tracker, Flexible goal setting, Smart daily reminders, Option to restart or adjust rules

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Plan | $9.99 | per year |
| Half-Year Plan | $9.99 | per 6 months |
| 3 month plan | $19.99 | per 3 months |
| 75 Hard Day Challenge | $29.99 | per year |
| Yearly | $29.99 | per year |
| 50 Coin | $4.99 | one-time |
| Lifetime | $19.99 | one-time |
| 250 coin | $19.99 | one-time |


### Delta

[App page](https://appshunter.io/ios/app/delta-progressive-overload/id6760977282)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Delta Premium - Monthly | $4.99 | per month |
| Delta Premium - Annually | $49.99 | per year |


## Frequently asked questions

### Is 75 Day Tough Challenge free?

75 Day Tough Challenge is free to download, with in-app purchases available.

### Is Delta free?

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

### Do 75 Day Tough Challenge or Delta have ads?

75 Day Tough Challenge shows ads; Delta does not.

### Which is updated more often, 75 Day Tough Challenge or Delta?

75 Day Tough Challenge ships an update every 9 days, and Delta every 3 days. Most recently, 75 Day Tough Challenge was updated on November 4, 2026 and Delta 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.*