Comparison

avAltimeter vs StampRecord

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

StampRecord

Visually track your daily progress and habits with a customizable stamp system. Perfect for monitoring efforts in learning, fitness, or medication adherence, and for children to record achievements. Review your history to foster continuous improvement.

Highlights
  • Customizable stamps with emoji and summaries
  • Daily record keeping
  • Progress review for improvement
  • Track language learning, diet, fitness
  • Monitor medication intake
  • Suitable for children's achievements
Read full description

Record your daily achievements with stamps using StampRecord! Who is it for? - People who want to keep a record of their daily efforts such as language learning, diet, muscle training, etc. to encourage them. - Children who want to record their help and study results and check with their parents. - People who want to record and check whether they have taken medicines. How to use 1. Add a stamp with a combination of emoji and summary. 2. Select the day you want to record and put a stamp on it. 3. Look back at your records and use them for daily improvement. Note: Developer may end support for older OS without notice.

Screenshots

avAltimeter4 screens
StampRecord4 screens

Verdict

The call

The clearest difference is review sentiment: StampRecord at 100% against avAltimeter's 50%. StampRecord also leads on price (Free vs $0.99). avAltimeter's advantage is rating (4.6 vs 4.0) and ratings volume (19 vs 1). On update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

StampRecord is free to download; avAltimeter costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

avAltimeter holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: avAltimeter has 19 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of avAltimeter's written reviews are positive against 100% of StampRecord's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

avAltimeter ships an update every 4 months, StampRecord every 2 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard5 real differences · 5 level
avAltimeter versus StampRecord: the parameters behind the verdict, then further details
ParameteravAltimeterStampRecord
Price$0.99Free — better
Rating4.6 (19 ratings) — better4.0 (1 ratings)
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings19 — better1
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size2 MB2 MB
Age rating4+4+
DeveloperAviametrix, LLCTakuto Nakamura

Customer experience

avAltimeter

All ratings19 ratings
Positive89.5%
Neutral0.0%
Negative10.5%
Written reviews8 reviews
Positive50.0%
Neutral12.5%
Negative37.5%

StampRecord

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

avAltimeter

No in-app purchases

None

StampRecord

No in-app purchases

Questions

Is avAltimeter free?
avAltimeter costs $0.99, with no in-app purchases.
Is StampRecord free?
StampRecord is free to download, with no in-app purchases.
Which has better reviews, avAltimeter or StampRecord?
avAltimeter is rated higher. avAltimeter averages 4.6 out of 5 from 19 ratings, while StampRecord averages 4.0 from 1 ratings.
Do avAltimeter or StampRecord have ads?
Neither avAltimeter nor StampRecord shows ads.
Which is updated more often, avAltimeter or StampRecord?
avAltimeter ships an update every 4 months, and StampRecord every 2 months. Most recently, avAltimeter was updated on October 24, 2026 and StampRecord on October 21, 2026.

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