# Vayu vs NutriScience AI

The clearest difference is ads: NutriScience AI at none against Vayu's shown. Vayu's advantage is device support (3 vs 1). On price, update cadence, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Vayu sells 3 in-app purchases, starting at $8.99 per month and NutriScience AI sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Vayu ships an update every 4 days, NutriScience AI every 3 days. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Vayu | NutriScience AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (17 ratings)](https://appshunter.io/ios/app/vayu-breathing-guide/id6744126459/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 196 MB | 20 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Prana Labs Inc.](https://appshunter.io/developer/1806209067) | [Aditya Rai](https://appshunter.io/developer/1869071267) |

## What reviewers say

### Vayu

[App page](https://appshunter.io/ios/app/vayu-breathing-guide/id6744126459)

This app offers guided breathing exercises with haptic and audio feedback to promote relaxation and mindfulness. It features personalized sessions, reminders, and an AI chatbot for wellness guidance, all accessible from your Apple Watch.

**Highlights:** Personalized breathing sessions, Haptic and audio guidance, Mindfulness reminders, Health app integration, AI-powered wellness chatbot, Breathing analytics dashboard

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vayu Pro Plan | $8.99 | per month |
| Vayu Pro Plan | $59.99 | per year |
| Vayu by Prana Lifetime | $499.99 | one-time |


### NutriScience AI

[App page](https://appshunter.io/ios/app/nutriscience-ai/id6769478956)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NutriScience AI Weekly | $0.99 | per 7 days |
| NutriScience AI Monthly | $2.99 | per month |
| NutriScience AI Annual | $29.99 | per year |


## Frequently asked questions

### Is Vayu free?

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

### Is NutriScience AI free?

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

### Do Vayu or NutriScience AI have ads?

Vayu shows ads; NutriScience AI does not.

### Which is updated more often, Vayu or NutriScience AI?

Vayu ships an update every 4 days, and NutriScience AI every 3 days. Most recently, Vayu was updated on October 5, 2026 and NutriScience AI on October 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.*