# Cloud Topper vs MachDB

The clearest difference is price: MachDB at Free against Cloud Topper's $1.99. MachDB also leads on rating (5.0 vs 2.7) and review sentiment (100% vs 65%). Cloud Topper's advantage is iOS requirement (12.0 vs 17.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

MachDB is free to download; Cloud Topper costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MachDB holds the better App Store score, 5.0 against 2.7. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews point the same way: 65% of Cloud Topper's written reviews are positive against 100% of MachDB's.

Cloud Topper ships an update every 12 months, MachDB every 2 weeks. The most recent releases landed on September 29, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Cloud Topper | MachDB |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [2.7 (7 ratings)](https://appshunter.io/ios/app/cloud-topper/id563015359/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/machdb/id6757681004/reviews)** |
| Number of ratings | **7** | 3 |
| Positive reviews | 65.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 weeks** |
| Monetization | Paid | **Free** |
| Size | 13 MB | 16 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Crop Applications, LLC.](https://appshunter.io/developer/563015362) | [MachDB LLC](https://appshunter.io/developer/1868240819) |

## What reviewers say

### Cloud Topper

[App page](https://appshunter.io/ios/app/cloud-topper/id563015359)

This utility app helps pilots determine cloud height using their device's camera and sensors. It offers a modern alternative to traditional methods and corrects for Earth's curvature.

**Highlights:** Camera, gyroscope, and accelerometer integration, Calculate height above or below clouds, Earth's curvature correction, Modern alternative to traditional sight levels, Easy to use interface

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

**In-app purchases:** none


### MachDB

[App page](https://appshunter.io/ios/app/machdb/id6757681004)

Easily download and transfer Garmin avionics database updates to an SD card using your iPhone or iPad. This app supports a wide range of Garmin avionics and requires only a standard USB-C SD card reader. Updates are fast and convenient for field use.

**Highlights:** Download Garmin database updates, Transfer updates to SD card, iPhone and iPad compatible, Supports various Garmin avionics, Uses standard USB-C SD card reader, Fast Wi-Fi/Cellular downloads

**In-app purchases:** none


## Frequently asked questions

### Is Cloud Topper free?

Cloud Topper costs $1.99, with no in-app purchases.

### Is MachDB free?

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

### Which has better reviews, Cloud Topper or MachDB?

MachDB is rated higher. Cloud Topper averages 2.7 out of 5 from 7 ratings, while MachDB averages 5.0 from 3 ratings.

### Do Cloud Topper or MachDB have ads?

Neither Cloud Topper nor MachDB shows ads.

### Which is updated more often, Cloud Topper or MachDB?

Cloud Topper ships an update every 12 months, and MachDB every 2 weeks. Most recently, Cloud Topper was updated on September 29, 2026 and MachDB on September 24, 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.*