# Physiological Sigh vs NapCraft

The clearest difference is ads: Physiological Sigh at none against NapCraft's shown. Physiological Sigh also leads on update cadence (every 3 days vs monthly). NapCraft's advantage is iOS requirement (17.0 vs 26.2). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Physiological Sigh sells 2 in-app purchases, starting at $2.99 per month and NapCraft sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Physiological Sigh ships an update every 3 days, NapCraft monthly. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Physiological Sigh | NapCraft |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/physiological-sigh/id6764079116/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 43 MB | 14 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [emmanuel orvain](https://appshunter.io/developer/1025308595) | [Tabish Hassan](https://appshunter.io/developer/1885918100) |

## What reviewers say

### Physiological Sigh

[App page](https://appshunter.io/ios/app/physiological-sigh/id6764079116)

This app guides you through a scientifically proven breathing technique to quickly calm your nervous system and reduce stress. It requires no prior meditation experience and offers customizable durations and ambient sounds for a personalized experience.

**Highlights:** Guided breathing exercises, Customizable phase durations, Ambient sound library, Daily reminder notifications, Distraction-free interface, Haptic feedback

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Account / Month | $2.99 | per month |
| Premium Account / Year | $9.99 | per year |


### NapCraft

[App page](https://appshunter.io/ios/app/napcraft-power-nap-timer/id6777194948)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| NapCraft Premium Yearly | $29.99 | per year |
| Premium Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Physiological Sigh free?

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

### Is NapCraft free?

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

### Do Physiological Sigh or NapCraft have ads?

NapCraft shows ads; Physiological Sigh does not.

### Which is updated more often, Physiological Sigh or NapCraft?

Physiological Sigh ships an update every 3 days, and NapCraft monthly. Most recently, Physiological Sigh was updated on October 31, 2026 and NapCraft on November 5, 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.*