# Upright vs Open Stress

The clearest difference is device support: Upright at 3 against Open Stress's 1. Upright also leads on iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Upright sells 2 in-app purchases, starting at $4.99 per month and Open Stress sells 1 in-app purchase, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Upright | Open Stress |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 29 MB | 6 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Abhishek Singh](https://appshunter.io/developer/6787160635) | [Sihang Chen](https://appshunter.io/developer/1479493730) |

## What reviewers say

### Upright

[App page](https://appshunter.io/ios/app/upright-pots-tracker/id6787160633)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upright Pro | $4.99 | per month |
| Upright Pro | $29.99 | per year |


### Open Stress

[App page](https://appshunter.io/ios/app/open-stress-hrv-notifier/id6792768616)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Open Stress Annual | $9.99 | per year |


## Frequently asked questions

### Is Upright free?

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

### Is Open Stress free?

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

### Do Upright or Open Stress have ads?

Neither Upright nor Open Stress 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.*