Comparison

Altimeter vs Realtime Altimeter

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

Head to head
About

Altimeter

This app uses your iPhone's GPS to display your current, maximum, and minimum altitude. It's ideal for hikers and travelers who need to know their elevation in various units and with adjustable scale magnification.

Highlights
  • GPS altitude display
  • Current, max, and min altitude tracking
  • Multiple unit options (m, ft, yd)
  • Adjustable scale magnification
  • Ideal for hiking and travel
Features
Read full description

Altimeter applications. Receive iphone using GPS location to display the altitude. When hiking, when traveling, your use. I wonder altitude in the mountains, or you are wondering when the height of the terrain to use this application. Current altitude, maximum altitude, minimum altitude is displayed. The altimeter is 'm', 'ft', 'yd' units can be displayed. Depending on the altitude display tick marks on the scale of 10, 100 scale, 1000 scale, you can adjust the magnification of 10,000.

About

Realtime Altimeter

This app provides precise altitude, coordinates, pressure, and speed readings using your device's GPS and barometer. It offers offline functionality, track recording, weather prediction, and a suite of outdoor tools without requiring an account or internet connection.

Highlights
  • Live altitude, pressure, and coordinate readings
  • Offline weather prediction
  • Track recording with GPX export
  • True-north compass and spirit level
  • Altitude check-in album with watermarks
  • Home and Lock Screen widgets
Features
Read full description

Realtime Altimeter - Your Pocket Outdoor Dashboard Built on iPhone's GPS and barometer, delivering millisecond-accurate altitude, coordinates, pressure, and speed. No account, no subscription, no internet required. Everything stays on your device. ======================== KEY FEATURES ======================== [LIVE READINGS] · Altitude (meters / feet) · Pressure (mmHg / kPa / mBar / atm) · Coordinates (DMS / decimal / reverse-geocoded / sunrise-sunset) · Speed and heading · True-north compass [HISTORY CHARTS] · 1h / 6h / 24h / 7-day ranges · Altitude and pressure dual charts · Min / Max / Current at a glance [TRACK RECORDING] · One-tap start for hikes, climbs, or rides · Distance, elevation gain, loss, average speed · Continues recording when screen is locked · Export GPX, compatible with every outdoor app [PRESSURE WEATHER TREND] · Predicts storm / rain / stable / fair weather from barometric changes · Works entirely offline [ALTITUDE CHECK-IN ALBUM] · Auto-logs position when you save a watermarked photo · Map view of all your spots · 6 outdoor-themed watermarks: Peak Line, Summit Badge, Trail Sign, GPS Watch, Expedition Stamp, Topo Map [OUTDOOR TOOLKIT] · Spirit level and slope meter · Sunrise / sunset and moon phase · Compass bearing lock · Voice altitude announcements [ACHIEVEMENTS] · Summit badges, distance goals, storm chaser, and more · Unlocked locally, no account needed [ECOSYSTEM] · Home Screen and Lock Screen widgets · Dynamic Island Live Activity (iOS 16.1+) · Standalone Apple Watch app ======================== WHY REALTIME ALTIMETER ======================== · 100% local data, nothing uploaded, no account · Zero ads and zero subscriptions. Optional coffee tips support ongoing development · Battery-optimized for all-day tracking · Full English and Simplified Chinese support · iPhone, Apple Watch, widgets, all included Whether you are hiking, climbing, cycling, skiing, flying, or just curious how high up you are right now, Realtime Altimeter is the simplest and most reliable companion. Download and start your first track today.

Screenshots

Altimeter4 screens
Realtime Altimeter4 screens

Verdict

The call

The clearest difference is review sentiment: Realtime Altimeter at 100% against Altimeter's 53%. Realtime Altimeter also leads on ads (none vs shown) and update cadence (weekly vs every 2 months). Altimeter's advantage is in-app purchases (none vs 1) and ratings volume (125 vs 1). On price, device support and iOS requirement 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

Both are free to download. Realtime Altimeter sells 1 one-off in-app purchase. Altimeter asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Realtime Altimeter holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Altimeter has 125 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 53% of Altimeter's written reviews are positive against 100% of Realtime Altimeter's.

UpkeepUpdate frequency

Altimeter ships an update every 2 months, Realtime Altimeter weekly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

Scorecard7 real differences · 3 level
Altimeter versus Realtime Altimeter: the parameters behind the verdict, then further details
ParameterAltimeterRealtime Altimeter
PriceFreeFree
Rating4.7 (125 ratings)5.0 (1 ratings) — better
Positive reviews53.5% of reviews100.0% of reviews — better
Number of ratings125 — better1
Update frequencyEvery 2 monthsWeekly — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS15.0 — better16.0
Further details — not scored
Size7 MB2 MB
Age rating4+4+
DeveloperEONSOFThaoqiang shan

Customer experience

Altimeter

All ratings125 ratings
Positive93.6%
Neutral3.2%
Negative3.2%
Written reviews43 reviews
Positive53.5%
Neutral4.7%
Negative41.9%

Realtime Altimeter

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Altimeter

No in-app purchases

1 purchases

Realtime Altimeter

One-time1
  • Buy Me a Coffee$0.99

Questions

Is Altimeter free?
Altimeter is free to download, with no in-app purchases.
Is Realtime Altimeter free?
Realtime Altimeter is free to download, with in-app purchases available.
Which has better reviews, Altimeter or Realtime Altimeter?
Realtime Altimeter is rated higher. Altimeter averages 4.7 out of 5 from 125 ratings, while Realtime Altimeter averages 5.0 from 1 ratings.
Do Altimeter or Realtime Altimeter have ads?
Altimeter shows ads; Realtime Altimeter does not.
Which is updated more often, Altimeter or Realtime Altimeter?
Altimeter ships an update every 2 months, and Realtime Altimeter weekly. Most recently, Altimeter was updated on November 6, 2026 and Realtime Altimeter on October 31, 2026.

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