Great Circle Tool vs TBM Report
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Great Circle Tool
Calculate the shortest distance between two points on Earth's surface. Ideal for pilots, it estimates flight times based on aircraft speed. A valuable planning utility for aviation professionals.
- Great circle distance calculation
- Airport to airport distance
- Flight time estimation
- Aircraft speed input
- Pilot planning tool
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This is an app to quickly measure the great circle distance between two points or airports around the globe. It is a great tool for pilots who can add the aircraft speed and get an estimate of the flight time as well. A must have planning tool for all pilots!
TBM Report
Pilots can upload Garmin avionics data files to generate detailed TBM Reports with approach analysis. The app automatically selects recent flights for upload, with options to choose specific flight periods or all flights. Log files can be shared as CSV or ZIP.
- Upload Garmin avionics data
- Generate TBM Reports
- Detailed approach analysis
- Automatic recent flight selection
- Customizable flight upload periods
- Share log files as CSV or ZIP
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This application can be used by pilots of Daher TBM models to upload their Garmin avionics data files to generate TBM Reports with detailed approach analysis. After choosing the location of your Garmin SD Card, the log files will be displayed and the recent flights (since previous upload) will be automatically selected and ready for upload. The user can optionally choose the last flight, flights from the previous day, week, month, or year, or all flights to upload. Log files can also be easily shared as CSV or a ZIP file.
Screenshots
Verdict
The clearest difference is review sentiment: TBM Report at 100% against Great Circle Tool's 33%. TBM Report also leads on price (Free vs $2.99) and rating (5.0 vs 2.6). Great Circle Tool's advantage is update cadence (every 4 days vs every 3 weeks) and iOS requirement (9.3 vs 14.0). On ratings volume, ads, in-app purchases and device support 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
TBM Report is free to download; Great Circle Tool costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
TBM Report holds the better App Store score, 5.0 against 2.6. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews point the same way: 33% of Great Circle Tool's written reviews are positive against 100% of TBM Report's.
Great Circle Tool ships an update every 4 days, TBM Report every 3 weeks. The most recent releases landed on October 7, 2026 and October 30, 2026 respectively.
| Parameter | Great Circle Tool | TBM Report |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 2.6 (5 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 — better | 3 |
| Update frequency | Every 4 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.3 — better | 14.0 |
| Further details — not scored | ||
| Size | 11 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Learrocket Productions, LLC | John Benediktsson |
Customer experience
Great Circle Tool
TBM Report
In-app purchases
Great Circle Tool
No in-app purchases
TBM Report
No in-app purchases
Questions
Is Great Circle Tool free?
Is TBM Report free?
Which has better reviews, Great Circle Tool or TBM Report?
Do Great Circle Tool or TBM Report have ads?
Which is updated more often, Great Circle Tool or TBM Report?
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