# iAIP CZ vs RLM

The clearest difference is rating: RLM at 5.0 against iAIP CZ's 1.0. RLM also leads on update cadence (every 3 weeks vs every 5 months). iAIP CZ's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 15.0). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. RLM sells 1 one-off in-app purchase. iAIP CZ asks for nothing beyond the download.

RLM holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

iAIP CZ ships an update every 5 months, RLM every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | iAIP CZ | RLM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/iaip-cz/id544679773/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/rlm-flight/id6448285133/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 31.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 12 MB | 6 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IHPCI.org, z.s.](https://appshunter.io/developer/1253405466) | [R.L.M. Software](https://appshunter.io/developer/289639238) |

## What reviewers say

### iAIP CZ

[App page](https://appshunter.io/ios/app/iaip-cz/id544679773)

Access the Czech Aeronautical Information Publication and an airport database. This utility works both online and offline, providing essential aviation data.

**Highlights:** Offline reader, Online reader, Czech Aeronautical Information Publication, Airport database, Aviation data

**Features:** macOS Compatibility

**In-app purchases:** none


### RLM

[App page](https://appshunter.io/ios/app/rlm-flight/id6448285133)

This aviation computer app offers a comprehensive suite of tools for pilots. It calculates various flight parameters, including altitude, airspeed, ground speed, wind components, and weight & balance. The app also features unit and currency conversions, making it a versatile utility for aviation professionals.

**Highlights:** Altitude & Cloud Base Calculations, Airspeed & Ground Speed Calculations, Wind Component & Correction Tools, Weight & Balance Calculations, Unit & Currency Conversion, Holding Pattern & Flight Plan Tools

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Full Access | $9.99 | one-time |


## Frequently asked questions

### Is iAIP CZ free?

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

### Is RLM free?

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

### Which has better reviews, iAIP CZ or RLM?

RLM is rated higher. iAIP CZ averages 1.0 out of 5 from 1 ratings, while RLM averages 5.0 from 2 ratings.

### Do iAIP CZ or RLM have ads?

Neither iAIP CZ nor RLM shows ads.

### Which is updated more often, iAIP CZ or RLM?

iAIP CZ ships an update every 5 months, and RLM every 3 weeks. Most recently, iAIP CZ was updated on November 1, 2026 and RLM on November 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.*