# C150 Pad vs Instrument Ground Instructor

The clearest difference is price: Instrument Ground Instructor at $4.99 against C150 Pad's $16.99. Instrument Ground Instructor also leads on device support (3 vs 1) and iOS requirement (11.0 vs 16.6). On update cadence, ads and in-app purchases there is nothing between them.

C150 Pad costs $16.99 and Instrument Ground Instructor $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

C150 Pad ships an update every 8 months, Instrument Ground Instructor every 7 months. The most recent releases landed on October 11, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | C150 Pad | Instrument Ground Instructor |
| --- | --- | --- |
| Price | $16.99 | **$4.99** |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/c150-pad/id1067564808/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 7 months** |
| Monetization | Paid | — |
| Size | 24 MB | 102 MB |
| Requires iOS | 16.6 | **11.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gyronimo, LLC](https://appshunter.io/developer/536898885) | [Bravo Zulu Apps LLC](https://appshunter.io/developer/1000879252) |

## What reviewers say

### C150 Pad

[App page](https://appshunter.io/ios/app/c150-pad/id1067564808)

This application is a flight planning tool for the Cessna 150, calculating mass and balance, takeoff and landing distances, climb data, and optimal cruise altitudes. It allows users to input various flight conditions and aircraft configurations to generate precise performance metrics.

**Highlights:** Mass & Balance calculations, Takeoff and Landing distance computation, Climb performance analysis, Optimal cruise altitude finder, Stall speed calculation, Load manifest generation, Scenario "what if" analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### Instrument Ground Instructor

[App page](https://appshunter.io/ios/app/instrument-ground-instructor/id1366302133)

**In-app purchases:** none


## Frequently asked questions

### Is C150 Pad free?

C150 Pad costs $16.99, with no in-app purchases.

### Is Instrument Ground Instructor free?

Instrument Ground Instructor costs $4.99, with no in-app purchases.

### Do C150 Pad or Instrument Ground Instructor have ads?

Neither C150 Pad nor Instrument Ground Instructor shows ads.

### Which is updated more often, C150 Pad or Instrument Ground Instructor?

C150 Pad ships an update every 8 months, and Instrument Ground Instructor every 7 months. Most recently, C150 Pad was updated on October 11, 2026 and Instrument Ground Instructor on October 20, 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.*