Comparison

Altimeter vs Alti

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

Alti

Track your mountain climbs with this app that uses GPS and your device's barometer to measure altitude gain. It provides daily, monthly, and yearly summaries, and allows you to save and share route profiles. Audio cues can alert you to elevation changes.

Highlights
  • Altitude tracking via GPS and barometer
  • Daily, monthly, and yearly climb summaries
  • Route profile recording and saving
  • Configurable audio alerts for elevation changes
  • Compass with sunrise/sunset indicator
  • Adjustable recording duration
Features
Read full description

Alti-Watcher is designed to count the meters climbed when hiking in the mountains. The application reads the initial location and altitude from the GPS module, and after approx. 30 sec. switches to altitude reading based on the built-in barometer. The location is also used during route recording when the phone has the screen off. When prevent sleep mode is active, GPS is turned off and only the barometer is active. The compass dial shows the sun's position at sunrise and sunset as a yellow and red dot and a level marker as two concentric circles. The results are presented on a daily, monthly and total basis. The month graph shows the results for all days in the current month and the previous months. The best daily result for the month is marked in red. The second graph shows the results for the current and previous years. The number of years presented can be set up to 10 years. On each graph, the total result (Σ) for the month or year is displayed in red. The chart of the current route profile will be shown on the profiles charts tab when the current recording ends. Charts can be sorted by date, elevation or trip time in descending order. The Description button allows you to name the selected route profile chart and the Delete button allows you to permanently delete it. Route profile charts can be saved to disk. This way you can share them with your friends. The files are saved in jpg format in the Alti-watcher/charts directory (run the Files application and go to On My iPhone->Alti-watcher->charts). The application allows you to play the sound every 20 m up or down by default. You can change this value or turn off the sound. Playing audio is useful when hiking in the mountains with your phone in your backpack. Recording allows you to record the meters climbed and the trail profile. You can pause the recording at any time during longer rests and then resume it when you start walking. Recording also stops automatically after 8 hours, but this value can be changed between 4 and 48 hours. Dim screen and prevent sleep improves the accuracy of the altitude readings. This will only slightly increase the energy consumption. High refresh rate allows you to record a profile chart with a time period of 1 second. In this mode, the results are not saved. Selected temperature range allows the barometer to be accurately calibrated in the range. This setting corrects the altitude readings that are dependent on the air temperature. The selected temperature range is presented in the form of a thermometer with the appropriate color in the altimeter view. The application does not collect or transfer any data. The database backup is stored on the phone, so it can be restored in case of failure and is not transferred anywhere. This appliacation requires the Fitness Tracking option to be enabled for the barometer to work: 1. Head to the 'Settings' app. 2. Scroll to 'Privacy & Security' and open. 3. Scroll to 'Motion & Fitness' and open. 4. Turn on 'Fitness Tracking' toggle.

Screenshots

Altimeter4 screens
Alti4 screens

Verdict

The call

The clearest difference is review sentiment: Altimeter at 53% against Alti's 0%. Altimeter also leads on rating (4.7 vs 3.7) and ratings volume (123 vs 3). Alti's advantage is ads (none vs shown) and update cadence (weekly vs every 2 months). On price, in-app purchases, 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Altimeter holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: Altimeter has 123 ratings behind it against 3, 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 0% of Alti's.

UpkeepUpdate frequency

Altimeter ships an update every 2 months, Alti weekly. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

Scorecard6 real differences · 4 level
Altimeter versus Alti: the parameters behind the verdict, then further details
ParameterAltimeterAlti
PriceFreeFree
Rating4.7 (123 ratings) — better3.7 (3 ratings)
Positive reviews53.5% of reviews — better0.0% of reviews
Number of ratings123 — better3
Update frequencyEvery 2 monthsWeekly — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.0 — better16.6
Further details — not scored
Size7 MB6 MB
Age rating4+4+
DeveloperEONSOFTAdam Mazur

Customer experience

Altimeter

All ratings122 ratings
Positive94.3%
Neutral3.3%
Negative2.5%
Written reviews43 reviews
Positive53.5%
Neutral4.7%
Negative41.9%

Alti

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Altimeter

No in-app purchases

None

Alti

No in-app purchases

Questions

Is Altimeter free?
Altimeter is free to download, with no in-app purchases.
Is Alti free?
Alti is free to download, with no in-app purchases.
Which has better reviews, Altimeter or Alti?
Altimeter is rated higher. Altimeter averages 4.7 out of 5 from 123 ratings, while Alti averages 3.7 from 3 ratings.
Do Altimeter or Alti have ads?
Altimeter shows ads; Alti does not.
Which is updated more often, Altimeter or Alti?
Altimeter ships an update every 2 months, and Alti weekly. Most recently, Altimeter was updated on October 29, 2026 and Alti on October 25, 2026.

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