# ISOBEAST vs RankZero

The clearest difference is in-app purchases: RankZero at none against ISOBEAST's 2. RankZero also leads on update cadence (every 3 days vs every 5 weeks). ISOBEAST's advantage is ads (none vs shown) and device support (3 vs 1). On price and iOS requirement there is nothing between them.

Both are free to download. ISOBEAST sells 2 in-app purchases, starting at $4.99 per month. RankZero asks for nothing beyond the download.

ISOBEAST ships an update every 5 weeks, RankZero every 3 days. The most recent releases landed on October 28, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | ISOBEAST | RankZero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/rankzero-self-discipline/id6797990941/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 50 MB | 303 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Andrew Isabirye](https://appshunter.io/developer/1894706023) | [OriKone LLC](https://appshunter.io/developer/1896066551) |

## What reviewers say

### ISOBEAST

[App page](https://appshunter.io/ios/app/isobeast-isometric-training/id6764201892)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ISOBEAST Pro (Monthly) | $4.99 | per month |
| ISOBEAST Pro (Annual) | $49.99 | per year |


### RankZero

[App page](https://appshunter.io/ios/app/rankzero-self-discipline/id6797990941)

Build discipline through daily habits and track your progress with a unique character leveling system. Engage in guided skill sprints and compete with friends in weekly leagues. Offers a free tier with core features and a Pro subscription for advanced tools.

**Highlights:** Daily habit tracking, Streak building, Gamified character progression, Guided skill sprints, Friend accountability and leagues, Forgiveness mechanic for missed days

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

**In-app purchases:** none


## Frequently asked questions

### Is ISOBEAST free?

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

### Is RankZero free?

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

### Do ISOBEAST or RankZero have ads?

RankZero shows ads; ISOBEAST does not.

### Which is updated more often, ISOBEAST or RankZero?

ISOBEAST ships an update every 5 weeks, and RankZero every 3 days. Most recently, ISOBEAST was updated on October 28, 2026 and RankZero 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.*