Comparison

Barometer Plus vs KWMSYS

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

Head to head
About

Barometer Plus

This app measures air pressure and altitude using your device's built-in sensor. It helps predict weather changes, monitor health impacts of pressure fluctuations, and optimize activities like fishing. Customize its appearance and receive notifications about significant pressure shifts.

Highlights
  • Barometer and altimeter with analog display
  • Temperature and humidity readings
  • Pressure and altitude unit conversion
  • GPS and airport data calibration
  • Relative altitude measurement
  • Pressure change notifications
  • History tracking and graph
Features
Read full description

Barometer Plus app measures air pressure and altitude using your device's built-in barometric pressure sensor. Because air pressure changes usually indicate a weather change, you can use this app to monitor and predict short-term weather variations. People suffering from migraine, headaches, or joint pain can monitor how barometric pressure impacts their mood. Fishermen can monitor the atmospheric pressure for right-time fishing. FEATURES: • The app contains a barometer and altimeter with a personalization graphic in classic analog style. It also displays the current temperature and humidity. • Display barometric pressure (sensor value) or mean sea level pressure (MSLP - value used in weather forecast services or stations). • Units support for pressure: mb, inHg, kPa, atm, Torr, psi, hPa, mmHg. Units for altitude: meter, feet. • Calibrate the barometer using altitude/location from the GPS. Calibrate the altimeter using the nearest airport information/METAR, or manually enter the QNH of the nearest airport. Offset sensor output value. • Measure the height (building/mountain/hiked/climbed) using the "Relative Altitude" feature (can be enabled in the app's Settings). • Notification about pressure change. "Notification custom rule" for you to define how and when the app sends notifications. Notify when air pressure changes indicate that extreme or worse weather may occur. • "Pressure Tracking" and "History Graph" require "Background App Refresh" or "Always Location Service" with "Exact update interval" (paid feature) enabled. • "My Area" allows you to define your frequent stay places, and the app tracks air pressure with location data. • Export history to CSV format and Today widget (paid features). • This app is the digital version compared with an aneroid or mercury barometer and can be adjusted to MSLP with additional features. CUSTOMIZABLE: You can change your barometer/altimeter appearance with: • Seven different housing colors. • Black, white or blue disk background. • Four different app backgrounds. • Three different types of needles. • Marker needle for easily monitor. • Dark or light Today widget theme. NOTES: • App only works on devices with a barometer sensor, such as iPhone 6/6s/7/8/X/11/12/13 (including Plus models), iPad Mini 4/Air 2/Pro, or later. • Weather icons on the dial: This only shows the air pressure trend like in an analog barometer. • Each time your device reboots, open the app for tracking with the "Exact update interval" feature work. • You may take the phone/tablet far away from computers, cables, and other magnetic sources to get accurate results. If you like this app, please support us - you can remove ads or unlock paid features from the menu: Shop. We welcome your ideas and suggestions - please email us at: support+barometer@pvdapps.com. Follow our official Facebook page: https://www.facebook.com/barometerplus/ or Twitter account: https://twitter.com/pvdapps.

About

KWMSYS

Features
Read full description

Die App beinhaltet folgende Feature: - Starkregen- und Hochwasser - Vorhersage und Frühalarm für teilnehmende Gemeinden - Informationen zu Warnstufen im Einzugsgebiet - Möglichkeit, überregionale Warngebiete zusammenzustellen - Allgemeine Wetterinformationen des DWD

Screenshots

Barometer Plus4 screens
KWMSYS4 screens

Verdict

The call

The clearest difference is in-app purchases: KWMSYS at none against Barometer Plus's 4. KWMSYS also leads on ads (none vs shown). Barometer Plus's advantage is update cadence (every 6 weeks vs every 4 months) and iOS requirement (13.0 vs 15.6). On price and device support 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. Barometer Plus sells 4 one-off in-app purchases. KWMSYS asks for nothing beyond the download.

UpkeepUpdate frequency

Barometer Plus ships an update every 6 weeks, KWMSYS every 4 months. The most recent releases landed on October 20, 2026 and October 1, 2026 respectively.

Scorecard4 real differences · 6 level
Barometer Plus versus KWMSYS: the parameters behind the verdict, then further details
ParameterBarometer PlusKWMSYS
PriceFreeFree
Rating4.0 (409 ratings) — better—
Positive reviews63.6% of reviews—
Number of ratings409 — better—
Update frequencyEvery 6 weeks — betterEvery 4 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.0 — better15.6
Further details — not scored
Size40 MB56 MB
Age rating4+4+
DeveloperNgo NaKWMSys GmbH

Bugs and requests

Barometer Plus

Reported bugs

3 issues
  • Stops tracking pressure changes
  • Incompatible with iOS 10 on iPads
  • Freezes or crashes on launch

Requested features

4 requests
  • Pressure trend indicators
  • Customizable graphs and data export
  • Notifications for pressure changes
  • Arthritis/migraine warning indicators

KWMSYS

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Barometer Plus

One-time4
  • No Ads, Widget and Export$0.99
  • Unlimited custom rules$0.99
  • Exact update interval$1.99
Show 1 more
  • Platinum Edition$3.99
None

KWMSYS

No in-app purchases

Questions

Is Barometer Plus free?
Barometer Plus is free to download, with in-app purchases available.
Is KWMSYS free?
KWMSYS is free to download, with no in-app purchases.
Do Barometer Plus or KWMSYS have ads?
Barometer Plus shows ads; KWMSYS does not.
Which is updated more often, Barometer Plus or KWMSYS?
Barometer Plus ships an update every 6 weeks, and KWMSYS every 4 months. Most recently, Barometer Plus was updated on October 20, 2026 and KWMSYS on October 1, 2026.

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