# Empty vs Rhythm

The clearest difference is in-app purchases: Rhythm at none against Empty's 1. Rhythm also leads on ads (none vs shown) and review sentiment (89% vs 70%). Empty's advantage is update cadence (every 6 months vs every 13 months) and iOS requirement (15.6 vs 17.6). On price, rating and device support there is nothing between them.

Both are free to download. Empty sells 1 one-off in-app purchase. Rhythm asks for nothing beyond the download.

Rhythm holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 95 and 454 respectively. Written reviews point the same way: 70% of Empty's written reviews are positive against 89% of Rhythm's.

Empty ships an update every 6 months, Rhythm every 13 months. The most recent releases landed on September 26, 2026 and August 10, 2026 respectively.

## The numbers

| Metric | Empty | Rhythm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (95 ratings)](https://appshunter.io/ios/app/empty-fasting-tracker/id1349345869/reviews) | **[4.7 (454 ratings)](https://appshunter.io/ios/app/rhythm-fasting-tracker/id1377199450/reviews)** |
| Number of ratings | 95 | **454** |
| Positive reviews | 70.0% of reviews | **88.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 months** | Every 13 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 14 MB | 3 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Thang Nguyen](https://appshunter.io/developer/921360262) | [Bijan Cronin](https://appshunter.io/developer/1377199449) |

## What reviewers say

### Empty

[App page](https://appshunter.io/ios/app/empty-fasting-tracker/id1349345869)

This app helps you track various fasting methods, including intermittent, circadian rhythm, and custom plans. It provides smart reminders and detailed progress views to support your health goals.

**Highlights:** Intermittent Fasting Tracking, Circadian Rhythm Fasting, Custom Fasting Plans, Smart Reminders, Progress Visualization, Fasting History

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Upgrade | $4.99 | one-time |


### Rhythm

[App page](https://appshunter.io/ios/app/rhythm-fasting-tracker/id1377199450)

This app simplifies intermittent fasting with a daily tracker. It supports various fasting schedules, from beginner-friendly to advanced, and helps users monitor their progress over time. Get notifications when your fast is complete.

**Highlights:** Daily fasting tracker, Flexible schedule support, Weekly progress tracking, Customizable fasting goals, One-click start, Progress monitoring, Completion notifications

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 💎 Simple and easy to use
- 🆓 Free app with no ads or subscriptions
- ⏱️ Straightforward fasting timer
- 📊 Tracks fasting progress
- 🔍 Allows editing of start/end times

**What reviewers complain about**

- ⏰ Can't track fasts longer than 24 hours
- 📅 Limited history view (only past week)
- 🔔 Lacks customizable notifications/reminders

**Reported bugs**

- Can't add past fasts
- Inconsistent weekly progress tracking

**Requested features**

- Ability to track longer fasts (e.g., 48-72 hours)
- Option to view fasting history beyond the past week
- Customizable notifications and reminders
- Integration with health/fitness tracking apps
- Weight tracking and progress visualization


## Frequently asked questions

### Is Empty free?

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

### Is Rhythm free?

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

### Which has better reviews, Empty or Rhythm?

Rhythm is rated higher. Empty averages 4.5 out of 5 from 95 ratings, while Rhythm averages 4.7 from 454 ratings.

### Do Empty or Rhythm have ads?

Empty shows ads; Rhythm does not.

### Which is updated more often, Empty or Rhythm?

Empty ships an update every 6 months, and Rhythm every 13 months. Most recently, Empty was updated on September 26, 2026 and Rhythm on August 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.*