# FastZen vs Marble

The clearest difference is in-app purchases: Marble at none against FastZen's 5. Marble also leads on iOS requirement (17.0 vs 26.0). FastZen's advantage is ratings volume (9 vs 2). On price, rating, ads and device support there is nothing between them.

Both are free to download. FastZen sells 5 in-app purchases, starting at $1.99 per 7 days. Marble asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for FastZen against 5.0 for Marble. Both are backed by a comparable volume of ratings — 9 and 2 respectively.

## The numbers

| Metric | FastZen | Marble |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (9 ratings)](https://appshunter.io/ios/app/fastzen-intermittent-fasting/id6744087602/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/marble-training-journal/id6779775636/reviews) |
| Number of ratings | **9** | 2 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Monetization | Freemium | **Free** |
| Size | 27 MB | 26 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [MefjuDev LLC](https://appshunter.io/developer/1777787735) | [Ali Ahunbaev](https://appshunter.io/developer/6779775638) |

## What reviewers say

### FastZen

[App page](https://appshunter.io/ios/app/fastzen-intermittent-fasting/id6744087602)

This app helps you manage your intermittent fasting journey with custom schedules, progress tracking, and smart reminders. Achieve your weight loss and energy goals with a clean, intuitive interface and motivational features.

**Highlights:** Custom fasting schedules (16:8, 20:4, OMAD, up to 168 hours), Progress tracking with history, streaks, and insights, Smart reminders for fasting start and end times, Achievements and milestones for motivation, Calendar view of completed fasts, Light and dark mode, Widgets

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Monthly | $2.99 | per month |
| 3 Months | $7.99 | per 3 months |
| Yearly | $19.99 | per year |
| Lifetime | $39.99 | one-time |


### Marble

[App page](https://appshunter.io/ios/app/marble-training-journal/id6779775636)

This app provides a focused space to log and track your gym workouts. It allows you to build templates, record sets with previous numbers visible for progressive overload, and add notes or photos to each session. Your training history is presented like a journal, with data synced across devices.

**Highlights:** Build workout templates, Log sets with previous numbers, Progressive overload tracking, Rest timer with live countdown, Journal-style workout history, Attach photos to workouts, Cross-device syncing

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

**In-app purchases:** none


## Frequently asked questions

### Is FastZen free?

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

### Is Marble free?

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

### Which has better reviews, FastZen or Marble?

FastZen and Marble are both rated 5.0 out of 5 on the App Store, from 9 and 2 ratings respectively.

### Do FastZen or Marble have ads?

Neither FastZen nor Marble shows ads.

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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.*