# Grind75 vs 75 Sustainable

The clearest difference is update cadence: 75 Sustainable at every 2 weeks against Grind75's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Grind75 ships an update monthly, 75 Sustainable every 2 weeks. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Grind75 | 75 Sustainable |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (54 ratings)](https://appshunter.io/ios/app/grind75/id6760317807/reviews)** | — |
| Number of ratings | **54** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 21 MB | 1 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Priya Pappachen Yohannan](https://appshunter.io/developer/1883822079) | [calbo, LLC](https://appshunter.io/developer/1868081032) |

## What reviewers say

### Grind75

[App page](https://appshunter.io/ios/app/grind75/id6760317807)

This app helps you build discipline and stay consistent with self-improvement challenges like 75 Hard or 75 Soft. It offers flexible tracking for various habits, multiple challenge modes, and progress visualization to support your personal growth journey without rigid rules.

**Highlights:** Customizable challenge lengths, Multiple challenge modes (Hard, Medium, Soft, Parent), Habit tracking for fitness, water, reading, diet, and more, Progress photo and milestone tracking, Flexible system with pause and resume options, Health integration for step tracking, Shareable transformation cards

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

**In-app purchases:** none


### 75 Sustainable

[App page](https://appshunter.io/ios/app/75-sustainable/id6797170951)

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

**In-app purchases:** none


## Frequently asked questions

### Is Grind75 free?

Grind75 is free to download, with no in-app purchases.

### Is 75 Sustainable free?

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

### Do Grind75 or 75 Sustainable have ads?

Neither Grind75 nor 75 Sustainable shows ads.

### Which is updated more often, Grind75 or 75 Sustainable?

Grind75 ships an update monthly, and 75 Sustainable every 2 weeks. Most recently, Grind75 was updated on October 24, 2026 and 75 Sustainable on October 16, 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.*