# PI vs Bayer_22615

The clearest difference is iOS requirement: Bayer_22615 at 12.0 against PI's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 4, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | PI | Bayer_22615 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 14 MB | 87 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Refuah Solutions LTD](https://appshunter.io/developer/1473298751) | [ERT, INC](https://appshunter.io/developer/1160214546) |

## What reviewers say

### PI

[App page](https://appshunter.io/ios/app/pi-support/id1663142410)

**Features:** macOS Compatibility

**In-app purchases:** none


### Bayer_22615

[App page](https://appshunter.io/ios/app/bayer-22615/id6479785600)

**In-app purchases:** none


## Frequently asked questions

### Is PI free?

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

### Is Bayer_22615 free?

Bayer_22615 is free to download, with no in-app purchases.

### Do PI or Bayer_22615 have ads?

Neither PI nor Bayer_22615 shows ads.

### Which is updated more often, PI or Bayer_22615?

PI ships an update every 3 weeks, and Bayer_22615 every 3 weeks. Most recently, PI was updated on October 4, 2026 and Bayer_22615 on October 3, 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.*