ACE vs MachDB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ACE
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.
- Checklist editor
- ACE checklist file format support
- Garmin avionics integration
- G3X Touch compatibility
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A checklist editor for Garmin avionics that support the ACE checklist file format (such as the G3X Touch).
MachDB
Easily download and transfer aviation database updates to an SD card or USB key using your iPhone or iPad. Supports major avionics systems like Garmin, Avidyne, and Pro Line for quick field updates.
- Download and transfer aviation database updates
- Supports SD card and USB key transfer
- Compatible with Garmin, Avidyne, and Pro Line avionics
- Fast updates over Wi-Fi or Cellular
- No proprietary hardware required
- Works with existing Jeppesen or Garmin accounts
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MachDB allows you to download and transfer aviation database updates to an SD card or USB key in seconds using your iPhone or iPad for fast updates in the field. Supports Garmin, Avidyne, and Pro Line avionics. All you need is your iPhone or iPad and a standard USB-C SD card reader (for SD updates) or USB-A to C cable (for USB updates). No proprietary hardware required! Download updates fast over Wi-Fi or Cellular connections. MachDB is compatible with all modern Garmin, Avidyne, and Pro Line avionics, using your existing Jeppesen or Garmin database account. No additional subscription or cost required. Supported avionics include: -Garmin G1000, G1000 Nxi, Perspective and Perspective + -Garmin G2000, G3000, G3X and Perspective Touch -Garmin Axis, G500, G600, G700, GTN 600 and 700 Xi -All other Garmin avionics using SD card or USB key for updates -Avidyne IFD, Vantage, and Entegra -Collins Pro Line 21 and Pro Line Fusion Supported Database Providers: -Jeppesen -Garmin
Screenshots
Verdict
The clearest difference is rating: ACE at 5.0 against MachDB's 4.3. ACE also leads on review sentiment (80% vs 67%). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ACE holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 5 and 6 respectively. Written reviews point the same way: 80% of ACE's written reviews are positive against 67% of MachDB's.
| Parameter | ACE | MachDB |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | 4.3 (6 ratings) |
| Positive reviews | 80.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 5 | 6 — better |
| Update frequency | — | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad, Mac | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Post River Software | MachDB LLC |
Customer experience
ACE
MachDB
In-app purchases
ACE
No in-app purchases
MachDB
No in-app purchases
