Calleva vs Jolly Logic AltimeterThree
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calleva
Explore the Roman town of Calleva Atrebatum through augmented reality. Learn about its history, uncover archaeological findings, and discover hidden details about Roman and Iron Age Britain.
- Explore Roman town walls
- Learn about excavations
- Discover Roman and Iron Age Britain
- See Nero's Bath House
- Interactive historical content
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Walk round the town walls of Calleva Atrebatum, the Roman Town now known as Silchester, learning about what remains of the town and what archaeologists have learnt from their excavations about Roman and Iron Age Britain. See Nero's Bath House uncovered and find out what the llamas are hiding!
Jolly Logic AltimeterThree
This companion app wirelessly connects to a physical altimeter device to record and analyze flight data for various flying objects. Visualize altitude and acceleration with interactive graphs, share your flight statistics, and export data for in-depth analysis.
- Wireless Bluetooth connection
- Real-time battery and status display
- Altitude and acceleration recording
- Interactive flight data graphs
- Data export for analysis
- Social media sharing of flight stats
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This is the companion app for Jolly Logic's AltimeterThree, a tiny recording altimeter for hobby model flyers. It records altitude and acceleration for rockets, planes, quadcopters, gliders, kites, helicopters, and falcons. Connect over Bluetooth, press Record, and the altimeter keeps recording even out of range. After the flight, download an interactive altitude chart. Rocket flights include full flight analysis. You can create and drag chart labels, and share the flight as a spreadsheet or chart image. Your existing flights are kept. Cloud Sync backs them up and shares them across your devices. It includes FlightLab, a way to analyze and compare your flights and import flights from other altimeters. Share a flight to Messages, Mail, and other apps. The app is free. Recording requires an AltimeterThree from Jolly Logic or a reseller. If location is on, each flight location is saved on a map.
Screenshots
Verdict
The clearest difference is update cadence: Jolly Logic AltimeterThree at every 5 weeks against Calleva's every 56 months. Jolly Logic AltimeterThree also leads on review sentiment (67% vs 40%). Calleva's advantage is rating (5.0 vs 4.6) and iOS requirement (8.0 vs 15.0). 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.
Calleva holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 4 and 5 respectively. Written reviews complicate that: 40% of Calleva's written reviews are positive against 67% of Jolly Logic AltimeterThree's, so the app with the better star average is not the one people write more warmly about.
Calleva ships an update every 56 months, Jolly Logic AltimeterThree every 5 weeks. Both last shipped on November 1, 2026.
| Parameter | Calleva | Jolly Logic AltimeterThree |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | 4.6 (5 ratings) |
| Positive reviews | 40.0% of reviews | 66.7% of reviews — better |
| Number of ratings | 4 | 5 — better |
| Update frequency | Every 56 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 27 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | Gill Hunt | Jolly Logic |
Customer experience
Calleva
Jolly Logic AltimeterThree
In-app purchases
Calleva
No in-app purchases
Jolly Logic AltimeterThree
No in-app purchases
Questions
Is Calleva free?
Is Jolly Logic AltimeterThree free?
Which has better reviews, Calleva or Jolly Logic AltimeterThree?
Do Calleva or Jolly Logic AltimeterThree have ads?
Which is updated more often, Calleva or Jolly Logic AltimeterThree?
Other comparisons
