Chronometer and Countdown HD vs Altitude Compass
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chronometer and Countdown HD
This utility app transforms your iPad into a versatile multi-stopwatch and multi-countdown timer. It's ideal for timing sporting events, athletic training, or motor racing, allowing simultaneous use of multiple timers and lap measurements.
- 4 independent stopwatches
- Lap timing for up to 8 events
- 4 independent countdown timers
- Adjustable countdown times
- Synchronization buttons
- Background operation
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"Chronometer and Countdown HD" turns your iPad into a multi-stopwatch / multi-countdown timer. Useful in sporting competitions or during athletic training to measure athletic performance, in motor racing and wherever it is necessary to use one or more stopwatches / countdown (simultaneously). Features: - 4 independent chronometer (You can use them simultaneously together with the 4 countdowns) - Interruption and resumption of the stopwatches counting (independently one from another) - "Lap" for measuring the arrival of two subsequent events for each chronometer (total of 8 events simultaneously) - 4 countdown (independent and simultaneously) with remaining time adjustable (using the numeric keypad of the device) - synchronization buttons for all stopwatches and for all countdowns - chronometers and countdowns active even when the application is in the background
Altitude Compass
This app provides real-time altitude, pressure, and location data for outdoor activities. It offers customizable compass dials and display themes, with an optional full version for enhanced photo watermarking and personalization.
- Real-time altitude and pressure readings
- GPS coordinates and nearby addresses
- Customizable compass dials and themes
- Home Screen, Lock Screen, and StandBy widgets
- Watermark camera for photos
- Photo information preservation
- Customizable watermark content
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Altitude Compass is a focused, ad-free compass and altimeter for hiking, camping, and travel records. Core compass and altitude features are free, while Full Version adds a watermark camera for iPhone and iPad and more personalization. Free core features • View heading, altitude, barometric pressure, coordinates, and nearby addresses • Switch the altitude source between GPS information and the device altimeter when supported • Check level, speed, sunrise, and sunset information • Choose from multiple compass dials, altitude display themes, light or dark appearance, fonts, and units • View altitude with Home Screen, Lock Screen, and StandBy widgets Full Version Choose Full Version when you want to record outdoor photos or further personalize Altitude Display: • High-quality watermark camera for iPhone and iPad: capture directly with the device camera and apply watermarks to high-resolution camera output rather than a screen or viewfinder capture • Photo information preservation: retain capture time, orientation, location, and other photo information whenever possible for continued recognition and organization in Photos and other apps • Custom watermark content: record altitude, pressure, coordinates, address, direction, time, and notes, with control over each field's visibility and order • HDR watermarked photos: supported iPhones can preserve richer highlight and shadow detail, with an option to save a more widely compatible JPEG instead • Custom background colors for Altitude Display You can try Full Version free for 3 days. The trial does not renew or charge automatically. A one-time in-app purchase permanently unlocks Full Version. There are no subscriptions. Customers who previously purchased the paid app automatically keep Full Version access and do not need to purchase it again. Network and privacy Core features such as heading, sensor altitude, and barometric pressure generally work offline. Nearby addresses, maps, in-app purchases, and purchase restoration require a network connection. The app contains no ads and does not collect personal data. Permissions • Location: GPS altitude, coordinates, speed, sunrise and sunset, maps, and addresses • Motion & Fitness: pressure and altimeter readings on supported devices • Camera and Photos: only when capturing and saving watermarked photos. Photo access is add-only; the app does not read your photo library. Device capabilities and readings may vary with hardware, system version, environment, and location signal. HDR watermarked photos require iPhone 12 or later with iOS 17 or later. The watermark camera is available on camera-equipped iPhones and iPads, with HDR features offered according to device capabilities.
Screenshots
Verdict
The clearest difference is review sentiment: Altitude Compass at 95% against Chronometer and Countdown HD's 0%. Altitude Compass also leads on price (Free vs $0.99) and rating (5.0 vs 2.0). Chronometer and Countdown HD's advantage is in-app purchases (none vs 2). On ads 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
Altitude Compass is free to download; Chronometer and Countdown HD costs $0.99 up front. Altitude Compass sells 2 one-off in-app purchases. Chronometer and Countdown HD asks for nothing beyond the download.
Altitude Compass holds the better App Store score, 5.0 against 2.0. That said, the two scores are not equally well evidenced: Altitude Compass has 17 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Chronometer and Countdown HD's written reviews are positive against 95% of Altitude Compass's.
Chronometer and Countdown HD ships an update every 42 months, Altitude Compass every 5 days. The most recent releases landed on November 1, 2026 and November 14, 2026 respectively.
| Parameter | Chronometer and Countdown HD | Altitude Compass |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 2.0 (1 ratings) | 5.0 (17 ratings) — better |
| Positive reviews | 0.0% of reviews | 95.1% of reviews — better |
| Number of ratings | 1 | 17 — better |
| Update frequency | Every 42 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Gianluca Natalini | 锦滔 欧 |
Customer experience
Chronometer and Countdown HD
Altitude Compass
In-app purchases
Chronometer and Countdown HD
No in-app purchases
Altitude Compass
- 3-day TrialFree
- Full Version Unlock$0.99





