Skip to content

BaroWatch Barometer

by Alf Hellmund

  • Weather
  • Paid
  • Small & simple · 100
View on the App Store
Rating
0.0
0 ratings · US storefront
Top 97%among 97 Weather apps
Last update
Sep 29, 2026
Version 1.2.3
Size
10 MB
Category
Weather
Tracked since
Oct 9, 2026

Estimated revenue

A model estimate with a likely range, not a reported figure.

No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.

How this estimate is made

Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.

Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.

Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.

Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.

Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.

Full method

Screenshots

As shown on the App Store listing.

About this app

Text from the App Store listing.

BaroWatch turns your iPhone, iPad and Apple Watch into a precision barometer. Track pressure changes, spot weather trends and get warned before the storm arrives.

WHY BAROWATCH

  • On every device — iPhone, iPad and Apple Watch share readings automatically
  • Full privacy — no cloud, no servers, no tracking, no ads
  • Works offline — measurements keep running in the background
  • Open standard unit — hectopascals (hPa), the unit pilots and meteorologists use

CORE FEATURES

Pressure measurement

  • Reads the built-in barometer in iPhone, iPad (iPadOS 17+) and Apple Watch
  • QFE (station pressure) and QNH (corrected to sea level)
  • Automatic altitude correction via GPS — or set your altitude manually
  • Optional manual calibration offset

Charts & visualization

  • Line, bar and area charts with smooth gradients
  • Color-coded bars show falling, stable and rising trends
  • Adjustable time ranges from 1 hour to 48 hours
  • Tap any point for the exact value, time and source
  • Day stripes for a multi-day overview
  • Freely configurable color thresholds for high and low pressure ranges

Apple Watch

  • Native Watch app with the full chart history
  • Complications for Inline, Circular, Rectangular and Corner
  • Background updates keep your readings current

Widgets

  • Home Screen widgets for iPhone and iPad with a sparkline chart
  • Lock Screen widgets in Inline, Circular and Rectangular

Alerts

  • Local notifications when pressure changes rapidly
  • Independent thresholds for falling and rising pressure
  • Adjustable observation windows (15 min to 3 h) and repeat cooldowns

Multi-device sync

  • iPhone ↔ Apple Watch: automatic via WatchConnectivity
  • iPhone ↔ iPad: peer-to-peer over local Wi-Fi or Bluetooth, paired with a 6-digit code
  • No internet connection required

Background refresh

  • Optional background location keeps the barometer running while you walk, drive or sleep
  • Smart wake-up whenever your Apple Watch syncs

Privacy by design

  • Pressure and altitude data stay on your device
  • No analytics, no third-party SDKs, no ads
  • GPS altitude lives in memory only — your exact position is never stored

Available in 29 languages.

Whether you're hiking, fishing, sailing or flying — BaroWatch gives you precise data and full control over your privacy.

What’s new

Release notes for the latest version, as written by the developer.

v1.2.3
  • More accurate air pressure readings on Apple Watch.
  • More color and trend arrows in charts and widgets.

Rank history

Daily position in the Japan charts. #1 is at the top.

Best rank
#1
Current rank
#62
Days charting
7 of 7

On the charts today

Small & simple score

How realistic it is for a small team to build something like this.

100/100

Small & simple

  • Developer size100% · 25

    Developer: 1 app on the charts

  • Audience size100% · 20

    Ratings: 0

  • App size100% · 10

    Size: 10 MB

  • Price model100% · 15

    Price model: paid

  • Demand proof100% · 30

    Best rank #1, 10 countries

An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2

How the score works

Version history

  • 1.2.3LatestReleased Sep 29, 2026