# O!PSYTest vs PuffDown

The clearest difference is in-app purchases: O!PSYTest at none against PuffDown's 3. O!PSYTest also leads on iOS requirement (12.1 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. PuffDown sells 3 in-app purchases, starting at $7.99 per month. O!PSYTest asks for nothing beyond the download.

## The numbers

| Metric | O!PSYTest | PuffDown |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Size | 34 MB | 52 MB |
| Requires iOS | **12.1** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 12+ | 17+ |
| Developer | [NUR Telecom LLC](https://appshunter.io/developer/1202124575) | [Serdar OZKAN](https://appshunter.io/developer/1539288181) |

## What reviewers say

### O!PSYTest

[App page](https://appshunter.io/ios/app/opsytest/id6514297636)

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

**In-app purchases:** none


### PuffDown

[App page](https://appshunter.io/ios/app/puffdown-vape-counter/id6780115864)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PuffDown Monthly | $7.99 | per month |
| PuffDown Annual | $39.99 | per year |
| PuffDown Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is O!PSYTest free?

O!PSYTest is free to download, with no in-app purchases.

### Is PuffDown free?

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

### Do O!PSYTest or PuffDown have ads?

Neither O!PSYTest nor PuffDown shows ads.

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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.*