Comparison

Altimeter & Barometer Pro vs Ventify

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

Head to head
About

Altimeter & Barometer Pro

Continuously record barometric pressure and altitude using your device's sensors. Visualize trends with interactive graphs, receive weather alerts, and track ascent/descent. Features a standalone Apple Watch app and a global pressure map.

Highlights
  • Continuous barometric pressure and altitude recording
  • Interactive trend graphs
  • Barometric pressure alerts
  • Standalone Apple Watch app
  • Global pressure map
  • Real-time wind analyzer
  • Weather station data and forecasts
Features
Read full description

Alti-Barometer Pro uses your iPhone’s or Watch’s sensor to automatically and continuously record your barometric pressure and altitude. Even while your iPhone is in standby or you're using other apps, Alti-Barometer will seamlessly process and record pressure data in the background. Using beautiful interactive graphs, our app shows you barometric pressure trends over hours and days to help you understand which way the weather may be headed. Our app supports a broad range ofl auto-updating widgets and Watch face complications. It also supports Apple’s Live Activities to let you see real-time pressure, altitude, and compass direction. And to make sure you don’t get caught off guard, the app’s Baro Alert capability automatically notifies you of large changes in barometric pressure. The Apple Watch is always a top priority for us, and the powerful Watch app can run completely independently from your iPhone and transforms your Watch into a true ABC (altimeter/barometer/compass) watch. And our Watch app includes a rich set of complications you can choose from to make your Watch face come alive.. Our BaroMap feature lets you see what’s happening around you by displaying pressure trends across the app’s global user community on an interactive map. And whenever you need a world-class high-precision altimeter, Alti-Barometer is ready. A true pressure-based altimeter, our app can keep track of even the smallest altitude changes with far greater precision than battery-draining GPS apps. In addition to altitude, Alti-Barometer displays vertical speed and keeps track of key stats such as total ascent and descent times and distances. And because it’s handy to know what direction you’re heading, Alti-Barometer displays a handy compass on the altimeter screens. The History feature automatically saves daily snapshots of your pressure and altitude data using Apple’s secure iCloud and lets you interactively explore historical data across weeks, months, or years. Want to see the pressure graph of that big storm last year? With our history capabilities, you can. We also made it easy to share a snapshots of baro or alto graphs through social media, email, or messaging with our one-tap share feature. Our exclusive real-time wind analyzer estimate local wind speed using only your device’s sensors - not internet required. Now you can know how hard the wind is blowing even in the middle of nowhere! Alti-Barometer also shows you weather conditions and forecasts using data from the global network of NOAA/ICAO weather stations - the same weather information that pilots use around the world to fly safely. It’s real weather from real weather stations. And our app has a full suite of weather condition and forecast notifications so you’re never surprised. And even the free version of our app is 100% ad-free to provide the best possible experience. If you need even more capabilities, the Premium Features upgrade unlocks iPhone widget support, CSV file data import and export, unlimited history, additional Watch functionality, extended recording time, extended altimeter run time, and much more. Although some features require internet connectivity, rest assured that Alti-Barometer can operate completely offline indefinitely and was designed to be a true wilderness and off-grid companion. So why all the features and capabilities that nobody else has? Because we’re weather nerds and outdoors enthusiasts, and we couldn’t find a real altimeter/barometer app that came anywhere close to our expectations. So we set out to build what we believe is now the world’s most advanced barometer/altimeter app on any platform, period. If you want the best, give our app a try. We hope you enjoy it as much as we do! Privacy policy: https://www.bogbridges.com/altibarometerproprivacy Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Ventify

This app analyzes indoor and outdoor conditions to advise on optimal ventilation for humidity control. It converts relative humidity to absolute values, providing clear recommendations on whether airing out a room is beneficial. Supports HomeKit and automatic weather data retrieval.

Highlights
  • Absolute humidity calculation
  • Ventilation recommendations
  • HomeKit integration
  • Automatic weather data
  • Celsius and Fahrenheit support
  • Sensor integration
Features
Read full description

Ventify helps you find out whether airing out your room will increase or decrease its humidity. Relative humidity depends on temperature and does not reflect the actual amount of water in the air. However, when ventilating, absolute humidity is what matters. That’s why fresh outside air, even with seemingly low relative humidity, can still raise the humidity indoors. Ventify converts relative humidity into absolute values and gives you a clear recommendation on whether ventilating makes sense. Convenient and automatic: Ventify supports HomeKit, current weather data, and both **Celsius and Fahrenheit**. You can select a room with temperature or humidity sensors, so Ventify automatically uses these values. Alternatively, you can define a location from which weather data is automatically retrieved. This way you save manual input and get results even faster.

Screenshots

Altimeter & Barometer Pro4 screens
Ventify4 screens

Verdict

The call

The clearest difference is price: Altimeter & Barometer Pro at Free against Ventify's $0.99. Altimeter & Barometer Pro also leads on update cadence (every 6 days vs every 2 months). Ventify's advantage is in-app purchases (none vs 2) and review sentiment (100% vs 84%). On ads, 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

Altimeter & Barometer Pro is free to download; Ventify costs $0.99 up front. Altimeter & Barometer Pro sells 2 in-app purchases, starting at $7.99 per year. Ventify asks for nothing beyond the download.

UpkeepUpdate frequency

Altimeter & Barometer Pro ships an update every 6 days, Ventify every 2 months. The most recent releases landed on October 20, 2026 and October 9, 2026 respectively.

Scorecard5 real differences · 5 level
Altimeter & Barometer Pro versus Ventify: the parameters behind the verdict, then further details
ParameterAltimeter & Barometer ProVentify
PriceFree — better$0.99
Rating4.6 (536 ratings) — better—
Positive reviews84.5% of reviews100.0% of reviews — better
Number of ratings536 — better—
Update frequencyEvery 6 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium — betterPaid
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.0 — better18.6
Further details — not scored
Size30 MB1 MB
Age rating4+4+
DeveloperBog Bridges LLCJohannes Bauer

Customer experience

Altimeter & Barometer Pro

All ratings536 ratings
Positive90.1%
Neutral4.7%
Negative5.2%
Written reviews103 reviews
Positive84.5%
Neutral3.9%
Negative11.7%

Ventify

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Altimeter & Barometer Pro

Reported bugs

3 issues
  • Wind estimator feature not working properly
  • Pressure data reset issue for some users
  • Apple Watch connectivity problems

Requested features

4 requests
  • Longer historical data graphs
  • Customizable pressure drop alerts
  • Metric unit support
  • Outdoor temperature in complications

Ventify

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Altimeter & Barometer Pro

Subscriptions1
  • Premium Features14 Days trial$7.991 Year
One-time1
  • Alti-Barometer customer trialFree
None

Ventify

No in-app purchases

Questions

Is Altimeter & Barometer Pro free?
Altimeter & Barometer Pro is free to download, with in-app purchases available.
Is Ventify free?
Ventify costs $0.99, with no in-app purchases.
Do Altimeter & Barometer Pro or Ventify have ads?
Neither Altimeter & Barometer Pro nor Ventify shows ads.
Which is updated more often, Altimeter & Barometer Pro or Ventify?
Altimeter & Barometer Pro ships an update every 6 days, and Ventify every 2 months. Most recently, Altimeter & Barometer Pro was updated on October 20, 2026 and Ventify on October 9, 2026.

Other comparisons