TBM Performance vs MachDB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TBM Performance
This app calculates essential flight performance data for Daher TBM aircraft, covering takeoff, landing, climb, cruise, and emergency procedures. It features a glide distance calculator, circuit breaker finder, and risk analysis tool for comprehensive flight planning.
- Flight performance calculations
- Normal and emergency procedures
- Glide distance calculator
- Circuit breaker finder
- Hold entry calculator
- Risk analysis tool
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TBM Performance computes all the useful performance numbers for flight planning for Daher (Socata) TBM aircraft models. It includes calculations for takeoff, landing, climb, cruise, descent, instrument procedures as well as emergencies. The app contains a complete set of normal and emergency procedures,including a glide distance calculator that handles headwinds and tailwinds, and an interactive circuit breaker finder. It also includes a hold entry calculator, a radar page, and a risk analysis tool. TBM Performance is also available on other mobile devices and as a WebApp (an App that runs in a browser) that runs on a variety of platforms (PC, Mac, tablets, phones). The cloud sync feature allows flight planning profiles entered on any device to be synchronized with your other devices when connected to the Internet. TBM Performance is a free, open-source development effort and has Apps and WebApps for other aircraft. See http://pohperformance.com for complete details.
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: TBM Performance at 5.0 against MachDB's 4.3. TBM Performance also leads on review sentiment (88% vs 67%). MachDB's advantage is update cadence (every 2 weeks vs every 2 months). 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.
TBM Performance holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 14 and 6 respectively. Written reviews point the same way: 88% of TBM Performance's written reviews are positive against 67% of MachDB's.
TBM Performance ships an update every 2 months, MachDB every 2 weeks. The most recent releases landed on November 11, 2026 and November 9, 2026 respectively.
| Parameter | TBM Performance | MachDB |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (14 ratings) — better | 4.3 (6 ratings) |
| Positive reviews | 87.5% of reviews — better | 66.7% of reviews |
| Number of ratings | 14 — better | 6 |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 24 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | POH Performance L.L.C. | MachDB LLC |
Customer experience
TBM Performance
MachDB
In-app purchases
TBM Performance
No in-app purchases
MachDB
No in-app purchases








