# Cyclic Sighing vs Fast

Cyclic Sighing and Fast are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Cyclic Sighing ships an update every 5 weeks, Fast every 2 months. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Cyclic Sighing | Fast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/cyclic-sighing-stress-relief/id6757509105/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 46 MB | 43 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Breathwork Studios LLC](https://appshunter.io/developer/693833920) | [Borche Davchev](https://appshunter.io/developer/1894036390) |

## What reviewers say

### Cyclic Sighing

[App page](https://appshunter.io/ios/app/cyclic-sighing-stress-relief/id6757509105)

This app offers guided breathing exercises based on the science-backed physiological sigh technique. It helps users find calm, improve mood, and promote restful sleep through simple, private sessions. Track your progress and mood over time with insightful journaling and customizable reminders.

**Highlights:** Guided breathing with animations, Customizable session timing, Mood check-ins and journaling, Breathing progress tracking, Smart reminders, Apple Health sync

**In-app purchases:** none


### Fast

[App page](https://appshunter.io/ios/app/fastprotocol/id6762401177)

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

**In-app purchases:** none


## Frequently asked questions

### Is Cyclic Sighing free?

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

### Is Fast free?

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

### Do Cyclic Sighing or Fast have ads?

Neither Cyclic Sighing nor Fast shows ads.

### Which is updated more often, Cyclic Sighing or Fast?

Cyclic Sighing ships an update every 5 weeks, and Fast every 2 months. Most recently, Cyclic Sighing was updated on October 6, 2026 and Fast on October 1, 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.*