RainMaker_CWIP vs Altimeter & Barometer Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RainMaker_CWIP
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Weather Modification LLC has produced the "RainMaker_CWIP” application. It is the graphical user interface associated with the Cloud Water Inertial Probe (CWIP). The CWIP is an airborne environmental and inertial movement sensor designed to assist the cloud seeding pilot make informed real-time decisions as to the seed-ability of a particular cloud system.
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.
- 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
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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/
Screenshots
Verdict
The clearest difference is in-app purchases: RainMaker_CWIP at none against Altimeter & Barometer Pro's 2. RainMaker_CWIP also leads on iOS requirement (15.6 vs 18.0). Altimeter & Barometer Pro's advantage is update cadence (every 6 days vs every 12 months) and device support (3 vs 1). On price and ads 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
Both are free to download. Altimeter & Barometer Pro sells 2 in-app purchases, starting at $7.99 per year. RainMaker_CWIP asks for nothing beyond the download.
RainMaker_CWIP ships an update every 12 months, Altimeter & Barometer Pro every 6 days. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.
| Parameter | RainMaker_CWIP | Altimeter & Barometer Pro |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.6 (567 ratings) — better |
| Positive reviews | — | 84.5% of reviews |
| Number of ratings | — | 567 — better |
| Update frequency | Every 12 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 15.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 7 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Weather Modification LLC | Bog Bridges LLC |
Bugs and requests
RainMaker_CWIP
Not enough reviews yet to summarise bugs or 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
In-app purchases
RainMaker_CWIP
No in-app purchases
Altimeter & Barometer Pro
- Premium Features14 Days trial$7.991 Year
- Alti-Barometer customer trialFree
Questions
Is RainMaker_CWIP free?
Is Altimeter & Barometer Pro free?
Do RainMaker_CWIP or Altimeter & Barometer Pro have ads?
Which is updated more often, RainMaker_CWIP or Altimeter & Barometer Pro?
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