avAltimeter vs LaMetric
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
avAltimeter
This aviation-focused altimeter app provides accurate altitude readings using built-in pressure sensors. It offers Kollsman adjustment, density altitude calculations, and oxygen requirement warnings for increased flight safety.
- Kollsman adjustment for barometric pressure
- Density Altitude and True Airspeed calculation
- Automatic barometric pressure updates from airports
- Oxygen requirement warnings based on altitude
- Imperial/Metric unit selection
- Day/Night illumination modes
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Simple and Effective! avAltimeter is a digital, aviation-oriented altimeter. It is the only altimeter app which has the Kollsman adjustment so you can adjust the altimeter to the current barometer setting, or to 29.92 inches of mercury for the pressure altitude. Need a quick backup for your panel? avAltimeter uses the latest Apple and Bosch technology built into the iPhone 6 and later models. Earlier models of the iPhone and iPads before iPad Air 2 or Mini 4 do not have the required pressure sensing hardware and do not work. All iPad Pro models work too! Smart! avAltimeter calculates the temperature sensitive Density Altitude. Based on the Density Altitude, the app also calculates True Airspeed as a function of Indicated Airspeed. avAltimeter calculates a rough estimate of the increased required Take-Off distance from that at seal level from increased Density Altitude as well. You can even set the App to obtain automatically obtain the latest barometric pressure from the closest reporting airport. The barometer setting will auto-update every 20 minutes, or if you move more than 25 miles from your previous location. When using the live METAR update feature, the App will display which airport pressure it is using, and how old the reading is. This feature requires an internet connect and active GPS, so it will not work well if you are flying inside a jet. In a jet, the App works great to track the cabin pressure if you just leave the barometric pressure set at 29.92 inHg. Increased Safety! Know your oxygen requirements. avAltimeter tracks your altitude and provides a warning to use oxygen when you exceed FAA mandated limits. Customizable! avAltimeter is customizable. Choose Imperial or Metric units. Set the Altimeter Setting through a popup Kollsman window or by directly setting the field altitude. The field altitude can be set manually or automatically by GPS. Select Day or Night illumination. Turn the audio alarms for oxygen on or off. Improve the take-off performance estimate by selecting your propellor type: constant speed or fixed pitch. Sensitive! The Bosch sensor chip built in to the iPhone 6 and later is sensitive to changes in altitude of three feet or less and has an estimated range from -1500 feet to over 20,000 feet. Unique! Unlike other aviation apps, avAltimeter uses actual barometric pressure to calculate altitude, not a GPS estimate. The barometer is only available in iPhone 6 and later or the iPad iPad Air 2, Mini 4 as well as all iPad Pro! Legal Disclaimer This is an app, not an FAA approved flight instrument. It has not been certified as meeting the relevant TSO specifications. This app can not be used as a primary flight instrument.
LaMetric
Control and customize smart lighting displays and internet-connected clocks. Personalize your space with dynamic light effects, display vital information, and integrate with smart home devices. Access a community-driven app store for extended functionality.
- Manage LaMetric TIME and SKY devices
- Customize display brightness and animations
- Personalize with colorful faces and pre-installed apps
- Extend functionality with community apps
- Control display content with modes
- Receive firmware updates
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LaMetric SKY is a brand new and unique mosaic custom-shaped lighting product, which is aimed to brighten up a mood with different light effects, decorate interior with paintings and motivate with social media counters, sales figures and more. It makes your interior stand out with sunrise, lightning, rainbow and other sky effects. LaMetric TIME - award-winning internet-connected clock for home and business. It enhances your interior and shows smartphone vital information from the Internet and works with numerous smart home devices like smart lights or smart weather station. KEY FEATURES • Seet up and manage your device • Change device settings like display brightness, auto-dimming, volume, text scroll animation and others • Customize the device with an extensive amount of colorful faces • Customize the pre-installed apps to your preferences • Extend the functionality of the device using the apps provided by the community. • Browse apps by category and collection • Control what is displayed on the device at a given time with modes, like "Schedule", "Click to scroll", "Autoscroll" or “Lock mode” • Keep your device up to date and safe by installing the latest over-the-air firmware updates • Grab technical information in case of technical difficulties, so our support can better assist you • Find User Guide and FAQ to discover all features Visit lametric.com for more information. P. S. If the production date of your LaMetric TIME is older than 2022, please use the LaMetric TIME app in order to configure it.
Screenshots
Verdict
The clearest difference is price: LaMetric at Free against avAltimeter's $0.99. LaMetric also leads on update cadence (monthly vs every 4 months) and ratings volume (76 vs 19). avAltimeter's advantage is review sentiment (50% vs 25%). On rating, 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
LaMetric is free to download; avAltimeter costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.6 for avAltimeter against 4.4 for LaMetric. Both are backed by a comparable volume of ratings — 19 and 76 respectively. Written reviews are what separate them: 50% of avAltimeter's written reviews are positive against 25% of LaMetric's.
avAltimeter ships an update every 4 months, LaMetric monthly. Both last shipped on October 24, 2026.
| Parameter | avAltimeter | LaMetric |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.6 (19 ratings) — better | 4.4 (76 ratings) |
| Positive reviews | 50.0% of reviews — better | 25.0% of reviews |
| Number of ratings | 19 | 76 — better |
| Update frequency | Every 4 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 115 MB |
| Age rating | 4+ | 9+ |
| Developer | Aviametrix, LLC | Smart Atoms Limited |
Customer experience
avAltimeter
LaMetric
In-app purchases
avAltimeter
No in-app purchases
LaMetric
No in-app purchases









