# ACE vs MachDB

ACE and MachDB both sit at 5.0 stars, but that hides the real split: 100% of MachDB's written reviews are positive against 80% of ACE's. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for ACE against 5.0 for MachDB. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews are what separate them: 80% of ACE's written reviews are positive against 100% of MachDB's.

## The numbers

| Metric | ACE | MachDB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/ace-editor/id6469464234/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/machdb/id6757681004/reviews) |
| Number of ratings | **5** | 3 |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Monetization | Free | Free |
| Size | 4 MB | 16 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPad, Mac | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Post River Software](https://appshunter.io/developer/325439356) | [MachDB LLC](https://appshunter.io/developer/1868240819) |

## What reviewers say

### ACE

[App page](https://appshunter.io/ios/app/ace-editor/id6469464234)

This application allows users to create and manage checklists for Garmin avionics. It specifically supports the ACE checklist file format, making it ideal for pilots using systems like the G3X Touch.

**Highlights:** Checklist editor, ACE checklist file format support, Garmin avionics integration, G3X Touch compatibility

**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 ACE free?

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

### Is MachDB free?

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

### Which has better reviews, ACE or MachDB?

ACE and MachDB are both rated 5.0 out of 5 on the App Store, from 5 and 3 ratings respectively.

### Do ACE or MachDB have ads?

Neither ACE nor MachDB shows ads.

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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.*