# C172M vs iDIAMOND Checkride Prep

The clearest difference is price: iDIAMOND Checkride Prep at Free against C172M's $13.99. iDIAMOND Checkride Prep also leads on rating (3.7 vs 3.0) and update cadence (every 6 weeks vs every 7 months). C172M's advantage is in-app purchases (none vs 5) and review sentiment (67% vs 50%). On ratings volume, ads and iOS requirement there is nothing between them.

iDIAMOND Checkride Prep is free to download; C172M costs $13.99 up front. iDIAMOND Checkride Prep sells 5 one-off in-app purchases. C172M asks for nothing beyond the download.

iDIAMOND Checkride Prep holds the better App Store score, 3.7 against 3.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews complicate that: 67% of C172M's written reviews are positive against 50% of iDIAMOND Checkride Prep's, so the app with the better star average is not the one people write more warmly about.

C172M ships an update every 7 months, iDIAMOND Checkride Prep every 6 weeks. The most recent releases landed on July 28, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | C172M | iDIAMOND Checkride Prep |
| --- | --- | --- |
| Price | $13.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/c172m/id596045714/reviews) | **[3.7 (3 ratings)](https://appshunter.io/ios/app/idiamond-checkride-prep/id1507414847/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | **66.7% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 27 MB | 78 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gyronimo, LLC](https://appshunter.io/developer/536898885) | [Aircraft Apps LLC](https://appshunter.io/developer/1499571546) |

## What reviewers say

### C172M

[App page](https://appshunter.io/ios/app/c172m/id596045714)

This app calculates mass, balance, and performance data for the Cessna 172M aircraft using actual Pilot's Operating Handbook values. It helps pilots plan flights quickly by determining optimal cruise altitudes, takeoff and landing distances, climb data, and stall speeds.

**Highlights:** Mass & Balance calculations, Takeoff and Landing performance, Climb data calculation, Optimal cruise altitude determination, Stall speed calculation, Save and load aircraft settings, Email load manifest

**In-app purchases:** none


### iDIAMOND Checkride Prep

[App page](https://appshunter.io/ios/app/idiamond-checkride-prep/id1507414847)

Prepare for aviation checkrides with interactive flashcards, quizzes, and an AI assistant. Access worldwide weather, airport information, and a community forum for pilots. Includes a fun aviation-themed board game to reinforce learning.

**Highlights:** Aircraft system flashcards and quizzes, AI-powered aviation Q&A, Worldwide weather and airport data, Customizable flashcard maker, Aviation-themed board game, Community message board

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MindCoach: Personal Health | $19.99 | one-time |
| 20 FAA Handbooks & Manuals | $19.99 | one-time |
| Diamond DA-20 Checkride Prep | $29.99 | one-time |
| Diamond DA-42 Checkride Prep | $29.99 | one-time |
| Diamond DA-40 | $29.99 | one-time |


## Frequently asked questions

### Is C172M free?

C172M costs $13.99, with no in-app purchases.

### Is iDIAMOND Checkride Prep free?

iDIAMOND Checkride Prep is free to download, with in-app purchases available.

### Which has better reviews, C172M or iDIAMOND Checkride Prep?

iDIAMOND Checkride Prep is rated higher. C172M averages 3.0 out of 5 from 2 ratings, while iDIAMOND Checkride Prep averages 3.7 from 3 ratings.

### Do C172M or iDIAMOND Checkride Prep have ads?

Neither C172M nor iDIAMOND Checkride Prep shows ads.

### Which is updated more often, C172M or iDIAMOND Checkride Prep?

C172M ships an update every 7 months, and iDIAMOND Checkride Prep every 6 weeks. Most recently, C172M was updated on July 28, 2026 and iDIAMOND Checkride Prep on June 11, 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.*