# Grind75 vs RRB Studios

The clearest difference is iOS requirement: RRB Studios at 15.0 against Grind75's 18.0. On price, update cadence, ads and in-app purchases 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, RRB Studios fortnightly. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Grind75 | RRB Studios |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (22 ratings)](https://appshunter.io/ios/app/grind75/id6760317807/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free | — |
| Size | 21 MB | 3 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Priya Pappachen Yohannan](https://appshunter.io/developer/1883822079) | [RRB Dance Company, LLC](https://appshunter.io/developer/1271902590) |

## 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


### RRB Studios

[App page](https://appshunter.io/ios/app/rrb-studios/id6773409911)

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

**In-app purchases:** none


## Frequently asked questions

### Is Grind75 free?

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

### Is RRB Studios free?

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

### Do Grind75 or RRB Studios have ads?

Neither Grind75 nor RRB Studios shows ads.

### Which is updated more often, Grind75 or RRB Studios?

Grind75 ships an update monthly, and RRB Studios fortnightly. Most recently, Grind75 was updated on October 7, 2026 and RRB Studios on October 10, 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.*