# avAltimeter vs StampRecord

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.

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

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.

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.

## The numbers

| Metric | avAltimeter | StampRecord |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.6 (19 ratings)](https://appshunter.io/ios/app/avaltimeter/id1120306812/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/stamprecord/id6469349969/reviews) |
| Number of ratings | **19** | 1 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 2 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aviametrix, LLC](https://appshunter.io/developer/1120306811) | [Takuto Nakamura](https://appshunter.io/developer/1203150472) |

## What reviewers say

### avAltimeter

[App page](https://appshunter.io/ios/app/avaltimeter/id1120306812)

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:** Vision Pro support

**In-app purchases:** none


### StampRecord

[App page](https://appshunter.io/ios/app/stamprecord/id6469349969)

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

**In-app purchases:** none


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*