# PreFlight vs risr/assess

The clearest difference is price: risr/assess at Free against PreFlight's $2.99. risr/assess also leads on update cadence (every 3 months vs every 10 months). PreFlight's advantage is iOS requirement (11.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

risr/assess is free to download; PreFlight costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PreFlight ships an update every 10 months, risr/assess every 3 months. The most recent releases landed on September 22, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | PreFlight | risr/assess |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 57 MB | 13 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mountain Wave Media Ltd](https://appshunter.io/developer/849216893) | [Fry-IT Limited](https://appshunter.io/developer/372224843) |

## What reviewers say

### PreFlight

[App page](https://appshunter.io/ios/app/preflight-grob-tutor/id1227306033)

This app helps aircrew practice normal and emergency drills for the Grob Tutor T1 aircraft. It provides instant feedback on instrument and switch selections, serving as a memory aid for flight reference cards.

**Highlights:** Practice normal and emergency drills, Instant feedback on instrument/switch selection, Supports Grob Tutor T1 (Classic & EA), Memory aid for flight reference cards, Designed for aircrew training

**Features:** macOS Compatibility

**In-app purchases:** none


### risr/assess

[App page](https://appshunter.io/ios/app/risrassess/id1360276606)

**In-app purchases:** none


## Frequently asked questions

### Is PreFlight free?

PreFlight costs $2.99, with no in-app purchases.

### Is risr/assess free?

risr/assess is free to download, with no in-app purchases.

### Do PreFlight or risr/assess have ads?

Neither PreFlight nor risr/assess shows ads.

### Which is updated more often, PreFlight or risr/assess?

PreFlight ships an update every 10 months, and risr/assess every 3 months. Most recently, PreFlight was updated on September 22, 2026 and risr/assess on October 7, 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.*