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Realtime Altimeter

Realtime Altimeter

GPS Altimeter Without Network

403 ratings
39 reviews
With Ads
✈️ Travel
🗺️ Navigation
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • September 20, 2015
  • July 25, 2026

Features

Developer

Zhenlai Xia
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Realtime Altimeter screenshot #1 for iPhone
Realtime Altimeter screenshot #2 for iPhone
Realtime Altimeter screenshot #3 for iPhone
iphone
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🧾$1.99
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About

This app provides real-time altitude readings, even without an internet connection. It also includes a compass, velocimeter, and a camera that can watermark photos with location data, making it ideal for travelers and outdoor adventurers.

✓Offline altimeter
✓Real-time altitude
✓Integrated compass
✓Velocimeter for speed
✓Watermark camera with GPS data
Show original description

What users say

Summarized from real user reviews of Realtime Altimeter. Based on 403 reviews and a 4.7/5 average, it highlights the 16 positives and 9 negatives reviewers mention most about this Travel app.

Positive things

  • 📸Captures photos with altitude watermark
  • ✈️Useful for travel and outdoor activities
  • 🆓Free to use
  • 👍Very practical and useful
  • 📍Provides location and altitude information
  • 🛰️Works without internet signal
  • 💨Displays real-time air pressure
  • 🏞️Good for hiking and backpacking
  • ⌚Has an Apple Watch app
  • 🏠Simple and clean interface
  • ✈️Works on airplanes without signal
  • ⛰️Accurate altitude readings
  • 📷Combines photos with location data
  • 📏Converts meters to feet
  • ✅More sensitive than built-in apps
  • 💡Useful for monitoring physical condition

Negative things

  • 🧭Compass missing East/West points
  • 📉Barometric pressure inaccurate
  • ⚖️Altitude readings fluctuate
  • 📷Cannot take landscape photos
  • 📶Not always immediate altitude reaction without network
  • ✈️Altimeter didn't work during flight (old version did)
  • ⌚Watch app not appearing after purchase
  • 💸Price is a bit high
  • ⚠️Altitude readings are inconsistent
See all reviews

What's New in Realtime Altimeter

3.4.0

July 25, 2026

1. Improved front-camera photos on iPhone 17 for more consistent framing with the altitude watermark 2. Refined Settings and other UI details for clearer text and smoother presentation 3. Pinch to zoom with two fingers on the altitude camera

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Subscriptions & In-App Purchases

$1.99

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User reviews

Most RecentHighest RatedLowest Rated

记录生活的好帮手

方便快捷，可以拍带海拔高度水印照片，给出行旅游增添了不少乐趣
车壳车壳

简明实用还免费，值得赞扬！

非常好
看山看海量海拔看山看海量海拔

WGS84？

GCJ-02!
kkcingkkcing

实时高度表就是好

在进藏的过程中，同车的旅客使用了这个程序，介绍给我，经过使用感觉非常实用、非常好👍……解决了很多问题及注意事项。再次点赞👍
George w LeeGeorge w Lee

Compass missing East and West etc.

Look at the image of the “compass” in the App Store. It only has North and South. Totally missing are East, West, NE, SW etc. and all the cardinal points as are degrees. In short it is a beautifully designed decorative compass that can not perform even the most basic compass functions. Additionally it played 3 advertising videos for random products in the 60 seconds I spent changing the altitude settings from meters to feet.
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FindingWindFindingWind
See 34 more reviews

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User experience

🐞

Reported Bugs

5 issues

Compass missing cardinal points

Bug

Inaccurate barometric pressure readings

Bug

Fluctuating and inaccurate altitude readings

Bug

Watch app not installing after purchase

Bug

Altimeter not working during flight

Bug
✨

Requested Features

7 requests

Announce current altitude based on time or altitude

Feature

Larger font size for speed readout

Feature

Option to switch altitude and speed display positions

Feature

Convert camera location address to text

Feature

Add barometric pressure display

Feature

Display altitude gain per hour for hiking

Feature

MPH unit for velocity

Feature

FAQ

What does the Realtime Altimeter app do?

This app allows you to check your real-time altitude even when you don't have a network connection. It also includes a compass, a velocimeter to measure your speed, and a camera that can add watermarks with altitude and GPS information to your photos.

Can I use the altimeter without an internet connection?

Yes, a key feature of this app is its ability to provide your altitude readings even when you are in rural areas, mountains, or other locations without network coverage. It relies on GPS for these measurements.

What other tools are included in the app?

In addition to the altimeter, the app features a beautifully designed compass for navigation, a velocimeter to track your speed while walking, riding, or in a car, and a special camera function that lets you take photos with your altitude and GPS information embedded.

Is this app free to use?

The app is free to download and use, but it does include in-app purchases and advertisements. This allows for continued development and the offering of additional features or an ad-free experience.

Who would find this app most useful?

This app is a must-have for travelers, hikers, mountaineers, and anyone who frequently finds themselves in areas with poor or no cellular service. It's also useful for those who want to document their adventures with precise location and altitude data on their photos.