# Torr: Barometer Altimeter — Pressure Forecast for Migraine

> Barometer and altimeter with pressure forecasts and migraine alerts. (iPhone/iPad app by SoyApps.)

- Source: https://appshunter.io/ios/app/torr-barometer-altimeter/id1586976470 (this page in markdown: same URL + `.md`)
- Developer: [SoyApps](https://appshunter.io/developer/1493114217)
- Category: Weather, Health & Fitness
- Price: Free with in-app purchases
- Rating: 4.40/5 from 178 App Store ratings · 66 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 17 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2021-09-22
- Data updated: 2026-09-03
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/torr-barometer-altimeter/id1586976470/reviews.md

## What is Torr?

Free barometer & altimeter — real-time pressure, altitude, 10-day forecasts with migraine alerts, automatic history logging, and CSV export all in one app.

The dashboard displays high-precision real-time measurement data, offering peace of mind for mountaineering enthusiasts and outdoor adventurers.
It uses your device's built-in barometric pressure sensor, motion sensor, and GPS, allowing offline use.
It also features real-time trend graphs, making it ideal for observing short-term changes during typhoon approaches, sudden downpours, stair/elevator ascents/descents, or driving uphill.
The altimeter lets you simultaneously view readings from three sources—sensor, GPS, and QNH (sea-level corrected pressure)—plus a calibrated value matched to a known elevation such as a trailhead.
Each altitude is displayed visually on an arch gauge, and you can tap each source to learn about its characteristics and accuracy.
Since barometric pressure and altitude support various units, it can also be used for professional purposes by researchers and academic institutions.

Additionally, for those sensitive to weather changes and suffering from migraines or weather-related illnesses, it provides graphs forecasting barometric pressure and weather for the next 10 days, along with medically grounded headache alert information updated every 6 hours.
Its graphical, intuitive UI runs smoothly, making it a valuable tool for daily prevention and countermeasures.

Furthermore, measured barometric pressure data is automatically stored within the app.
It features a background measurement mode that enables measurements even when the app is in the background or asleep. You can view accumulated data and export it to CSV files.
It also supports Live Activities in the background, allowing you to view real-time data on Dynamic Island or the lock screen.

Beyond the main app, it also works with Apple Watch, letting you instantly check barometric pressure and altitude.

An all-in-one, high-performance barometer app covering all present, future, and past information related to barometric pressure.

The one-of-a-kind app you never knew you needed—that's "Torr"!!

【Features】
・Dashboard
　・Barometer (Atmospheric pressure data via pressure sensor)
　・Altimeter — View altitudes from 4 sources on arch gauges
　　・Sensor Altitude (absolute altitude from the barometric sensor)
　　・GPS Altitude (elevation above sea level via satellite positioning)
　　・QNH Altitude (sea-level corrected barometric altitude)
　　・Calibrated Altitude (calibration matched to a known elevation)
・Pressure Forecast
　・Up to 10 days of nearby sea-level pressure values and weather forecasts
　・Pressure graph showing trends like rises and falls
　・6-hourly migraine/weather sensitivity alerts based on medical evidence
・History
　・Automatic data logging
　・Daily history export to CSV files
　・Background measurement mode
・Unit settings — 7 pressure units including Torr, hPa, kPa, mBar, psi, inHg, mmHg
・Color theme settings
・Torr Pro plan for ad-free experience
・Apple Watch compatibility
・Lock screen widget
・Live Activity

【Other】
Some devices may not have a barometric pressure sensor or motion sensor.
Please note that in such cases, certain dashboard features may not be available.
Location access and an internet connection are required to use the barometric pressure forecast.
Location access is required for background measurement.

Please submit requests or inquiries via reviews or the support URL.

## Key features

- Real-time barometer and altimeter
- 10-day pressure and weather forecasts
- Migraine and weather sensitivity alerts
- Automatic history logging and CSV export
- Offline functionality
- Apple Watch support
- Multiple altitude sources

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro (Yearly) | $19.99 | per year |
| Pro (Monthly) | $1.99 | per month |


## Recent user reviews (10 of 66)

All indexed reviews: https://appshunter.io/ios/app/torr-barometer-altimeter/id1586976470/reviews.md

### 1/5 — Ads

*2026-07-17*

This was a fine app until ads began covering the Forecast, my tab of choice. So I’ll be deleting.

### 2/5 — Too hard to decipher

*2026-05-23*

Might be great for somebody who knows how to read pressure charts, but I do not. There is no key or any kind of guide to explain how to use the app or what any of the data means for those of us who are sensitive to pressure changes, except for a “caution” and “warning” highlighted area, and even those didn’t have any more info. There’s also no way to change your location to anything but your current one from what I could tell, so unhelpful for planning trips. I switched to Pressure Pal and knew within 30 seconds I like that app way better.

### 4/5 — Helpful

*2026-05-18*

Hi. I just wanted to let you know I find your app helpful. I have chronic daily migraines and the majority of them are weather related. But I notice in your app you only use the words “caution” and “danger” when the pressure is expected to drop, not when it’s supposed to rise. That’s when my headache symptoms begin. Thought you might consider adding some additional warnings for people who have those migraines. Thanks!

### 5/5 — Great app

*2026-04-29*

Great. Very helpful for a medical condition I have.

### 1/5 — Not loading

*2026-04-28*

Some reason forecast not loading today

### 2/5 — 広告タイミング

*2026-04-24*

便利に使わせて頂いていましたが、最近は起動して気圧グラフ画面に切り替えた瞬間に強制全画面広告が入るようになりました。
広告を見てほしい作者様の気持ちは理解しますが、出し方や出すタイミングは一番良くないのではないでしょうか。
今確認したい、すぐ確認したいという時に狙ったように全画面広告、これは不快感でしかない。
広告は見ますが、ユーザーの足元を見るような行為はどうかと思います。

**Developer response:** この度は貴重なレビューをありがとうございます。ご不便をおかけして申し訳ありません。

前提として、無料でもすべての機能を継続してご利用いただく上で苦渋の決断となっております。

さまざまなユースケースがありますので一概にはいえませんが、お客様にとっては最も良くない体験というのは理解いたしました。今後のアップデートにて改善できないか検討して参ります。

なお、広告のない体験をサブスクリプションプランにて提供しており、多くのお客様にご利用いただいております。こちらも合わせてご検討いただければと思います。

### 4/5 — Helps me plan

*2026-04-07*

This app is so accurate that it helps me plan my day since I am very sensitive to air pressure changes. Would have been 5 star if I didn't have to deal with ads. I would pay to not have the ads and use this app.

**Developer response:** Thank you so much for your kind words and for using our app. We’re glad it helps you plan your day.

We offer “Torr Pro,” a subscription that removes all ads for a seamless experience. You can find it in the app’s Settings screen. We hope you’ll enjoy with ad-free.

### 2/5 — Great app, but broken by update

*2026-04-05*

I’ve been using this app for a couple years now, and finding it very useful. But since the iPadOS 26.4 update, it’s no longer showing the actual reading. (I verified with another app that the device’s pressure sensor is still working correctly.)

**Developer response:** Thank you for using our app, and sorry for the inconvenience. We’re currently investigating this issue.

Could you let us know:
∙	Your iPad model (e.g., iPad Air 5th gen)
∙	Whether other values like sensor altitude are still displayed?

We’ll work on a fix as soon as possible. 
Thank you for your patience.

Updated: We’ve just released version 3.10.3, which includes a fix that may resolve this issue. Please try updating to the latest version, and let us know if the problem persists.

### 5/5 — Only 1 thing missing

*2026-04-03*

I wish there was a little past history saved. This is an awesome app to help forecast potential migraines!!!

**Developer response:** Thank you for your kind review. We’re glad our app helps you forecast potential migraines. 

We will take your suggestion into consideration for future updates. Thanks for the feedback!

### 1/5 — ipad mini7不显示气压传感器数据

*2026-04-02*

app不显示气压传感器数值

**Developer response:** 感谢您使用本应用并提供反馈。

访问气压传感器需要”运动与健身”权限。
但遗憾的是，iPad mini 等部分机型的系统设置中可能没有”运动与健身”选项，导致无法授予气压传感器的访问权限。

这并非本应用的问题，而是 iPadOS 的系统限制。

检查 设置 → 隐私与安全性 中是否有”运动与健身”选项

## Frequently asked questions about Torr

### What does the Torr: Barometer Altimeter app do?

This app functions as a free barometer and altimeter, providing real-time atmospheric pressure and altitude measurements. It also offers 10-day pressure forecasts, weather trend graphs, and medically grounded migraine alerts. The app automatically logs historical data and can export it to CSV files, making it useful for various outdoor activities and for managing weather-sensitive conditions.

### What are the key features of this barometer and altimeter app?

Key features include a dashboard with high-precision real-time barometer and altimeter readings from multiple sources (sensor, GPS, QNH, calibrated). It offers up to 10 days of pressure forecasts with trend graphs and 6-hourly migraine/weather sensitivity alerts. The app also provides automatic data logging, background measurement mode, CSV export, and Apple Watch support.

### Is this app free to use or does it have costs associated with it?

The app is free to download and use, offering core barometer and altimeter functionalities. It also features in-app purchases, indicated by 'Torr Pro', which likely unlocks advanced features or removes limitations. Specific pricing for 'Torr Pro' is not detailed in the description.

### What devices is Torr: Barometer Altimeter compatible with?

The app is designed for mobile devices and utilizes built-in sensors like the barometric pressure sensor, motion sensor, and GPS. It also explicitly mentions compatibility with Apple Watch, allowing users to check data directly on their wrist. The app supports offline use, meaning it doesn't always require an internet connection.

### Who would benefit from using this weather and altitude tracking app?

This app is beneficial for mountaineering enthusiasts and outdoor adventurers who need real-time altitude and pressure data. Researchers and academic institutions can use it for professional purposes due to its support for various units. Individuals sensitive to weather changes, suffering from migraines, or weather-related illnesses will find the pressure forecasts and alerts particularly helpful for daily prevention and countermeasures.

## Version history (last 5 releases)

### 3.10.3 — 2026-04-07

- Fixed a bug where barometric pressure and relative altitude could stop being displayed under certain conditions

### 3.10.2 — 2026-04-06

- Fixed a bug where the pressure forecast caution trend might not display when using the widget

### 3.10.1 — 2026-03-30

- Improved accuracy of QNH altitude calculation
- Minor bug fixes and improvements to usability and stability

### 3.10.0 — 2026-03-29

- Major altimeter redesign — view 4 sources (Sensor, GPS, QNH, Calibrated) on arch gauges
- Added altitude calibration feature
- Added "torr" as a pressure unit
- Minor bug fixes and improvements to usability and stability

### 3.9.2 — 2026-03-25

- Bug fixes and usability and stability improvements

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*