# pAIP Reader vs B737 FMS Trainer PRO

The clearest difference is in-app purchases: pAIP Reader at none against B737 FMS Trainer PRO's 1. pAIP Reader also leads on device support (3 vs 1). B737 FMS Trainer PRO's advantage is iOS requirement (15.0 vs 18.0). On price, update cadence and ads there is nothing between them.

Both are free to download. B737 FMS Trainer PRO sells 1 in-app purchase, starting at $34.99 per month. pAIP Reader asks for nothing beyond the download.

pAIP Reader ships an update every 2 months, B737 FMS Trainer PRO monthly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | pAIP Reader | B737 FMS Trainer PRO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 16 MB | 625 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [TAKUYA HIGUCHI](https://appshunter.io/developer/579952589) | [Heading 365](https://appshunter.io/developer/1609857583) |

## What reviewers say

### pAIP Reader

[App page](https://appshunter.io/ios/app/paip-reader/id1510277520)

**Features:** macOS Compatibility

**In-app purchases:** none


### B737 FMS Trainer PRO

[App page](https://appshunter.io/ios/app/b737-fms-trainer-pro/id6740525381)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One month subscription | $34.99 | per month |


## Frequently asked questions

### Is pAIP Reader free?

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

### Is B737 FMS Trainer PRO free?

B737 FMS Trainer PRO is free to download, with in-app purchases available.

### Do pAIP Reader or B737 FMS Trainer PRO have ads?

Neither pAIP Reader nor B737 FMS Trainer PRO shows ads.

### Which is updated more often, pAIP Reader or B737 FMS Trainer PRO?

pAIP Reader ships an update every 2 months, and B737 FMS Trainer PRO monthly. Most recently, pAIP Reader was updated on October 25, 2026 and B737 FMS Trainer PRO on October 28, 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.*