# AltitudeMeter&GPSCameraTool海拔计 vs Calculator Sci Unit Converter

The clearest difference is price: AltitudeMeter&GPSCameraTool海拔计 at Free against Calculator Sci Unit Converter's $1.99. AltitudeMeter&GPSCameraTool海拔计 also leads on update cadence (every 3 days vs monthly). Calculator Sci Unit Converter's advantage is rating (4.0 vs 1.0). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

AltitudeMeter&GPSCameraTool海拔计 is free to download; Calculator Sci Unit Converter costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calculator Sci Unit Converter holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

AltitudeMeter&GPSCameraTool海拔计 ships an update every 3 days, Calculator Sci Unit Converter monthly. The most recent releases landed on September 9, 2026 and July 26, 2026 respectively.

## The numbers

| Metric | AltitudeMeter&GPSCameraTool海拔计 | Calculator Sci Unit Converter |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/altitudemeter-and-gpscameratool/id6747572733/reviews) | **[4.0 (2 ratings)](https://appshunter.io/ios/app/calculator-sci-unit-converter/id6772422667/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Monthly |
| Monetization | **Free** | Paid |
| Size | 21 MB | 25 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [绍霖 卢](https://appshunter.io/developer/1831639874) | [厦门市凡游网络科技有限公司](https://appshunter.io/developer/1842524161) |

## What reviewers say

### AltitudeMeter&GPSCameraTool海拔计

[App page](https://appshunter.io/ios/app/altitudemeter-and-gpscameratool/id6747572733)

Measure your current altitude with GPS or barometric sensors. Switch units between meters and feet, and get real-time updates. Ideal for outdoor activities like hiking and photography.

**Highlights:** GPS altitude measurement, Barometric sensor calibration, Unit conversion (meters/feet), Real-time altitude updates, Outdoor activity companion

**Features:** macOS Compatibility

**In-app purchases:** none


### Calculator Sci Unit Converter

[App page](https://appshunter.io/ios/app/calculator-sci-unit-converter/id6772422667)

This app offers a robust calculator with both standard and scientific functions. It includes a unit converter for various measurements and currency, plus helpful shortcuts for percentages, taxes, and tips. All calculations are saved locally for easy access.

**Highlights:** Standard and scientific calculator modes, Unit conversion for length, weight, temperature, currency, Full calculation history log, Percentage, tax, and tip calculation shortcuts, Offline functionality, Optimized for phone and tablet

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is AltitudeMeter&GPSCameraTool海拔计 free?

AltitudeMeter&GPSCameraTool海拔计 is free to download, with no in-app purchases.

### Is Calculator Sci Unit Converter free?

Calculator Sci Unit Converter costs $1.99, with no in-app purchases.

### Which has better reviews, AltitudeMeter&GPSCameraTool海拔计 or Calculator Sci Unit Converter?

Calculator Sci Unit Converter is rated higher. AltitudeMeter&GPSCameraTool海拔计 averages 1.0 out of 5 from 1 ratings, while Calculator Sci Unit Converter averages 4.0 from 2 ratings.

### Do AltitudeMeter&GPSCameraTool海拔计 or Calculator Sci Unit Converter have ads?

Neither AltitudeMeter&GPSCameraTool海拔计 nor Calculator Sci Unit Converter shows ads.

### Which is updated more often, AltitudeMeter&GPSCameraTool海拔计 or Calculator Sci Unit Converter?

AltitudeMeter&GPSCameraTool海拔计 ships an update every 3 days, and Calculator Sci Unit Converter monthly. Most recently, AltitudeMeter&GPSCameraTool海拔计 was updated on September 9, 2026 and Calculator Sci Unit Converter on July 26, 2026.

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