Altimeter+ vs SkyTimer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Altimeter+
This app measures your current altitude using GPS, ASTER data, or your device's barometer. It offers an integrated map with peak data, a compass, and distance grids, functioning even without active GPS.
- GPS, ASTER, and barometer altitude measurement
- Average altitude calculation
- Integral map with peak indicator
- Compass and distance grid
- Apple Watch support
- Works without active GPS
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The Altimeter+ altimeter calculates the altitude of your current location via a GPS, Aster or barometer measurement (for iPhone 6 and later). In addition to this, the app also provides an average calculation of GPS and ASTER altitude data as well as an integral map which shows peaks, a compass and a distance grid. Features: - Apple Watch support! - Barometer altitude measurement (iPhone 6 and later) - Altimeter with GPS or ASTER measurement - GPS/ASTER average calculation - Unit of measurement - imperial or metric - Integral map with Apple maps and peak indicator, compass and distance grid - Also functions without active GPS Peak data from peakhunter.com
SkyTimer
This app automatically logs flights, tracks fuel burn, and manages tank levels in real-time from your wrist, phone, or iPad. It provides detailed flight logs and can export data, acting as a cockpit companion for pilots.
- Automatic flight logging
- Real-time fuel tracking
- Multi-tank and engine support
- Worldwide airport database
- Smart fuel balancing
- Detailed flight logs
- Cross-device sync
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SkyTimer is the cockpit companion that tracks your fuel and logs your flight. It draws your aircraft's fuel system as it really is, tells you when to switch tanks, and records takeoffs, landings, and times on its own. On iPhone, iPad, and Apple Watch. *** YOUR FUEL, TRACKED *** SkyTimer estimates fuel used and remaining in every tank, live, from time on each tank and your aircraft's fuel burns. Change fuel flow mid-flight as conditions change, or pick a burn you've set up, like Rich of Peak, Lean of Peak, or Economy Cruise. - Your fuel system, drawn as it really is: from a 172 on Both to a twin with crossfeed, with up to 7 tanks and 4 engines. - Fuel Management Plans set the tanks each flight starts on and when to switch: by time on tank, fuel used, or fuel transferred. Smart Balance keeps your tanks even. - Works with a wide range of fuel selectors, transfer pumps, and crossfeeds. - Start from a catalog of common aircraft, or set up your own. Fuel quantities are estimates. Always confirm fuel with your gauges and a visual check. *** YOUR FLIGHT, LOGGED *** Smart Track uses GPS ground speed and your aircraft's Vso to detect takeoffs and landings, day and night. SkyTimer logs block and flight times, out/off/on/in times, and every airport, including stops, from a built-in worldwide airport database that works without Internet. Automatic detection needs a device with built-in GPS. Every flight goes into your logbook with fuel used, time on tanks, and Hobbs and Tach. Add notes, edit a trip, and export to CSV or LogTen. *** THE NEAREST AIRPORT, WHERE TO LOOK FOR IT *** Nearest gives you the closest airport like a traffic call, "KATW, 9 o'clock, 7 miles," with its runways, frequency, and elevation. *** ON iPHONE, iPAD, AND APPLE WATCH *** On iPad, run SkyTimer full screen or beside your EFB in Split View, Slide Over, or a window. On iPhone, the Live Activity and Dynamic Island keep fuel and times in view while you fly with your EFB. On iPhone Duo, open it up to see fuel, Nearest, and your trip side by side. On Apple Watch, every feature is on your wrist, and the watch keeps tracking on its own if your phone stays behind. Your aircraft and flights sync across your devices with iCloud. *** FREE TO START *** SkyTimer is free to download and logs block and flight times at no charge. SkyTimer Plus unlocks: - Fuel tracking and Fuel Management Plans - Automatic takeoff and landing detection - Unlimited flight storage - Multiple aircraft - Trip editing and export - iCloud sync, and in-flight sync between iPhone, iPad, and Apple Watch One subscription unlocks Plus on all your devices. --------------------- Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel your subscription in your App Store account settings. Prices may vary by location. --------------------- Privacy Policy: https://skytimer.app/privacy/ Terms of Use: https://skytimer.app/terms/
Screenshots
Verdict
The clearest difference is price: SkyTimer at Free against Altimeter+'s $1.99. SkyTimer also leads on update cadence (fortnightly vs every 2 months). Altimeter+'s advantage is rating (4.5 vs 4.0) and in-app purchases (none vs 2). On ads 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
SkyTimer is free to download; Altimeter+ costs $1.99 up front. SkyTimer sells 2 in-app purchases, starting at $2.49 per month. Altimeter+ asks for nothing beyond the download.
Altimeter+ holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Altimeter+ has 710 ratings behind it against 22, so its average is the more settled of the two. Written reviews point the same way: 80% of Altimeter+'s written reviews are positive against 54% of SkyTimer's.
Altimeter+ ships an update every 2 months, SkyTimer fortnightly. The most recent releases landed on November 10, 2026 and November 11, 2026 respectively.
| Parameter | Altimeter+ | SkyTimer |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.5 (710 ratings) — better | 4.0 (22 ratings) |
| Positive reviews | 79.6% of reviews — better | 53.8% of reviews |
| Number of ratings | 710 — better | 22 |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Best chart rank | #21 — better | — |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Apple Watch |
| Requires iOS | 11.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 45 MB | 172 MB |
| Age rating | 4+ | 4+ |
| Developer | Sichtwerk AG | Framework Learning, LLC |
Customer experience
Altimeter+
SkyTimer
Bugs and requests
Altimeter+
Reported bugs
3 issues- App crashes when trying to calibrate or access settings
- Altimeter readings are inaccurate or inconsistent
- App not working on certain devices or iOS versions
Requested features
4 requests- Add option to display altitude in feet or meters
- Implement automatic calibration using GPS
- Add complication support for Apple Watch
- Provide above ground level (AGL) altitude reading
SkyTimer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Altimeter+
No in-app purchases
SkyTimer
- Monthly Plus Subscription$2.491 Month
- Annual Plus Subscription$17.991 Year








