# PARI Study Connect vs COPD Fuel

The clearest difference is in-app purchases: PARI Study Connect at none against COPD Fuel's 2. PARI Study Connect also leads on iOS requirement (15.2 vs 18.6). COPD Fuel's advantage is update cadence (every 3 weeks vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. COPD Fuel sells 2 in-app purchases, starting at $9.99 per month. PARI Study Connect asks for nothing beyond the download.

PARI Study Connect ships an update every 5 months, COPD Fuel every 3 weeks. The most recent releases landed on October 6, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | PARI Study Connect | COPD Fuel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Size | 31 MB | 64 MB |
| Requires iOS | **15.2** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [PARI GmbH Spezialisten fuer effektive Inhalation](https://appshunter.io/developer/1521532043) | [Ingenious Medical Solutions LLC](https://appshunter.io/developer/1889704772) |

## What reviewers say

### PARI Study Connect

[App page](https://appshunter.io/ios/app/pari-study-connect/id1598554689)

**In-app purchases:** none


### COPD Fuel

[App page](https://appshunter.io/ios/app/copd-fuel/id6761445414)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| COPD Fuel Premium | $9.99 | per month |
| premium_yearly | $99.99 | per year |


## Frequently asked questions

### Is PARI Study Connect free?

PARI Study Connect is free to download, with no in-app purchases.

### Is COPD Fuel free?

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

### Do PARI Study Connect or COPD Fuel have ads?

Neither PARI Study Connect nor COPD Fuel shows ads.

### Which is updated more often, PARI Study Connect or COPD Fuel?

PARI Study Connect ships an update every 5 months, and COPD Fuel every 3 weeks. Most recently, PARI Study Connect was updated on October 6, 2026 and COPD Fuel on October 2, 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.*