Comparison

Barometric Pressure vs Pollen Shield

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

Head to head
About

Barometric Pressure

This app uses your device's built-in barometer to display real-time atmospheric pressure charts. Monitor pressure trends, set custom alarms for pressure changes, and log data for later analysis. It also offers altitude display and optional sea-level adjusted pressure readings.

Highlights
  • Real-time atmospheric pressure monitoring
  • Pressure alarms and notifications
  • Background data logging
  • Sea level adjusted pressure (optional IAP)
  • Altitude display
  • Data export to CSV
Features
Read full description

Barograph uses the barometer built into your iPhone to draw realtime charts of the atmospheric pressure. It lets you view pressure trends, set alarms, and get alerts when the pressure changes. It also lets you log and export data to CSV format. Discover the ultimate tool for tracking atmospheric pressure with Barograph, the original barometer data logger app designed specifically for iPhone and iPad. Whether you’re a weather enthusiast, an outdoor adventurer, or simply curious about atmospheric changes, Barograph offers powerful features to measure and analyze air pressure in real-time. Key Features: •Real-Time Atmospheric Pressure Monitoring: Instantly measure atmospheric pressure and watch dynamic graphs showing pressure changes over time. •Pressure alarms: Set an alarm and get notified when pressure rises above or below the desired value. •Background Data Logging: Use “Background App Refresh” to continuously collect barometric pressure data, even when the app is not actively in use. •Sea Level Adjusted Pressure: If you prefer to view calculated sea-level adjusted pressure instead of measured pressure, you can enable this feature with an optional in-app purchase. Adjusted pressure is calculated using your iPhone’s barometer and local weather data via Weatherkit. •Altitude Display: View your relative altitude based on barometer readings, perfect for tracking elevation changes during hikes or flights. •Push Notifications: Stay informed with periodic notifications that provide atmospheric pressure values, alarms, and trends, ensuring you’re always aware of significant changes. •Data Export: Easily share your barometer data in CSV format for further analysis or to share with friends and colleagues. Use Cases: •Weather Prediction: Track weather systems and anticipate changes. A dropping pressure generally indicates rain is approaching. •Elevation Tracking: Observe how atmospheric pressure changes with elevation, ideal for hikers, pilots, and outdoor enthusiasts. •Scientific Research: Gather detailed barometric pressure data for educational or research purposes, with seamless data export for comprehensive analysis. •Many people use atmospheric pressure data as an indicator of when they may have a migraine headache. Download Barograph today and transform your iPhone or iPad into a sophisticated barometer data logger. Experience unparalleled accuracy and insight into the atmospheric pressure around you! Maximize your understanding of weather patterns, elevation changes, and more with Barograph – your personal atmospheric pressure tracker and logger. Privacy Policy: https://catspaw-systems.com/PrivacyPolicies/BarographPrivacy.html

About

Pollen Shield

Read full description

Pollen Shieldは、花粉症のあなたのために「通知1つ」に振り切ったシンプルな花粉アプリです。 ■ 家を出る直前だけ、そっと通知 毎朝の出発時刻を自動で学習し、あなたが家を出る前のベストタイミングで、その日の花粉飛散量を1通だけ通知します。アプリを開く必要はありません。通知を見て、マスクを足すかどうか判断するだけ。 ■ 鬱陶しい毎朝通知はしない 花粉が少ない日は通知しません。飛散量が気になるレベルの日だけ、静かに知らせます。「通知疲れ」しないUXを徹底設計しました。 ■ 広告ゼロ・課金なし(MVP期間) 画面を埋め尽くす広告バナーも、オフシーズンも続くサブスクもありません。必要な情報だけを最速で届けます。 ■ プライバシーファースト 位置情報は出発パターンの学習にのみ使用し、端末内でのみ処理されます。個人を特定する情報をサーバーに送信することはありません。詳細はプライバシーポリシーをご覧ください。 ■ 対応エリア 日本全国の主要地域に対応。Google Pollen APIの公開データを基に、スギ・ヒノキ・草本系の飛散量を統合した独自スコアで通知判定を行います。 ■ こんな方におすすめ ・毎朝ニュースの花粉情報をチェックするのが面倒な方 ・「家を出た後にくしゃみが止まらなくなる」経験がある方 ・既存の花粉アプリの通知過多や広告に疲れた方 ・シンプルで静かなアプリが好きな方 ■ バージョン1.0 について MVP版として、通知機能に絞り込んでリリースしました。今後、症状記録・薬の飲み忘れリマインド・エリア追加など、ユーザーの声を聞きながら慎重に機能を追加していきます。要望はサポートURLまでお気軽にお寄せください。 Pollen Shieldで、今年の花粉シーズンを少しだけラクに。

Screenshots

Barometric Pressure4 screens
Pollen Shield4 screens

Verdict

The call

The clearest difference is in-app purchases: Pollen Shield at none against Barometric Pressure's 3. On price, update cadence, ads 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. Barometric Pressure sells 3 one-off in-app purchases. Pollen Shield asks for nothing beyond the download.

UpkeepUpdate frequency

Barometric Pressure ships an update every 5 days, Pollen Shield every 8 days. The most recent releases landed on October 26, 2026 and October 14, 2026 respectively.

Scorecard1 real difference · 9 level
Barometric Pressure versus Pollen Shield: the parameters behind the verdict, then further details
ParameterBarometric PressurePollen Shield
PriceFreeFree
Rating4.0 (57 ratings) — better—
Positive reviews61.0% of reviews—
Number of ratings57 — better—
Update frequencyEvery 5 days — betterEvery 8 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size30 MB2 MB
Age rating4+4+
DeveloperCatspaw Systems LLCplaypark

Bugs and requests

Barometric Pressure

Reported bugs

20 issues
  • App crashes weekly
  • Recovery utility not functioning
  • History is lost
  • Altitude reading is incorrect
  • App opens to a blank white/black screen
Show 15 more
  • App requires Motion & Fitness settings to function
  • App stops measuring pressure when not in foreground
  • Paid version still shows ads
  • Security risk with clipboard auto-pasting
  • Trend feature not working
  • Continuous recording time is limited
  • App does not work on iOS 10 on iPads
  • App does not work on iPad mini 4
  • No history is displayed
  • History is erased when changing display units
  • Hg measurement is inaccurate
  • No user customization for graph axes
  • Background data is not used
  • App does not appear to work in background
  • Full-screen video ads with audio

Requested features

17 requests
  • Ability to calibrate altitude
  • Option to clear history and show only last few days
  • Accept regional settings (ddMM)
  • Add setting to disable Motion & Fitness requirement
  • Export to CSV
Show 12 more
  • Zoom in on data table
  • Continuous monitor mode with adjustable sample rate
  • Dark mode option
  • Advanced analytics dashboard
  • Calibrate pressure to local pressure
  • Ability to output data as a .csv file
  • Add hectopascals as a measurement unit
  • User ability to set range on vertical and horizontal axis
  • Time displayed on time axis
  • Japanese language support
  • Use M8 coprocessor data for background recording
  • Option to remove ad banner with a small payment

Pollen Shield

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Barometric Pressure

One-time3
  • Upgrade to Pro$5.99
  • Give me a tip!$9.99
  • Give me a big tip!$19.99
None

Pollen Shield

No in-app purchases

Questions

Is Barometric Pressure free?
Barometric Pressure is free to download, with in-app purchases available.
Is Pollen Shield free?
Pollen Shield is free to download, with no in-app purchases.
Do Barometric Pressure or Pollen Shield have ads?
Neither Barometric Pressure nor Pollen Shield shows ads.
Which is updated more often, Barometric Pressure or Pollen Shield?
Barometric Pressure ships an update every 5 days, and Pollen Shield every 8 days. Most recently, Barometric Pressure was updated on October 26, 2026 and Pollen Shield on October 14, 2026.

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