# Invoy vs Pneuma Hydro

The clearest difference is rating: Pneuma Hydro at 5.0 against Invoy's 4.6. Pneuma Hydro also leads on update cadence (every 10 days vs every 6 weeks) and review sentiment (100% vs 89%). Invoy's advantage is ratings volume (76 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Pneuma Hydro holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Invoy has 76 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 89% of Invoy's written reviews are positive against 100% of Pneuma Hydro's.

Invoy ships an update every 6 weeks, Pneuma Hydro every 10 days. The most recent releases landed on October 23, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Invoy | Pneuma Hydro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (76 ratings)](https://appshunter.io/ios/app/invoy/id1444260845/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pneuma-hydro/id6504490019/reviews)** |
| Number of ratings | **76** | 2 |
| Positive reviews | 89.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 10 days** |
| Monetization | Free | Free |
| Size | 140 MB | 34 MB |
| Requires iOS | **13.0** | 13.4 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Invoy](https://appshunter.io/developer/985872372) | [Might Could Studios LLC](https://appshunter.io/developer/1053696888) |

## What reviewers say

### Invoy

[App page](https://appshunter.io/ios/app/invoy/id1444260845)

This app helps users understand their fat burn through a breath-based device and track key wellness factors. An analyst team uses this data to provide personalized wellness insights, supporting serious commitment to health goals.

**Highlights:** Breath-based fat burn analysis, Key wellness factor tracking, Personalized wellness insights, HealthKit data integration (Weight), Enterprise/clinical deployment program

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

**In-app purchases:** none


### Pneuma Hydro

[App page](https://appshunter.io/ios/app/pneuma-hydro/id6504490019)

This app helps users build better habits through personalized plans and progress tracking. It connects with a specialized Bluetooth device for a unique, tailored experience. Visualize your journey with intuitive dashboards and reports, even offline.

**Highlights:** Bluetooth device connectivity, Customized cessation plans, Intuitive dashboards, Progress visualization, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Invoy free?

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

### Is Pneuma Hydro free?

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

### Which has better reviews, Invoy or Pneuma Hydro?

Pneuma Hydro is rated higher. Invoy averages 4.6 out of 5 from 76 ratings, while Pneuma Hydro averages 5.0 from 2 ratings.

### Do Invoy or Pneuma Hydro have ads?

Neither Invoy nor Pneuma Hydro shows ads.

### Which is updated more often, Invoy or Pneuma Hydro?

Invoy ships an update every 6 weeks, and Pneuma Hydro every 10 days. Most recently, Invoy was updated on October 23, 2026 and Pneuma Hydro on October 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*