# P/T Manager

> P/T Manager (iPhone/iPad app by Aeronautical Data Systems Inc..)

- Source: https://appshunter.io/ios/app/pt-manager/id1544892210 (this page in markdown: same URL + `.md`)
- Developer: [Aeronautical Data Systems Inc.](https://appshunter.io/developer/552304929)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 1 MB
- Languages: English
- Released: 2020-12-23
- Data updated: 2026-05-16
- User reviews in markdown: https://appshunter.io/ios/app/pt-manager/id1544892210/reviews.md

## What is P/T Manager?

The new Pressure and Time app is an essential management tool to have for any non-renewable gas resource.

Pressure, bars, hectopascals and other metrics used to measure pressure all require additional calculations in the operational use of any gas.

Time is a universal metric understood by virtually anyone in the world and does not require translation or conversion to understand quantity and consumption.

Cylinder size, Flow rate and pressure quantity amount (PSI, BARA, KPA, etc) are all that are needed to arrive at a duration (time remaining).

The Pressure and Time app will count down numerically in hours, minutes and seconds. An outside color ring is also another indication of time remaining. If the ring is Green there is more than :45 minutes of the gas remaining.  If the ring is yellow then there is less than :45 minutes of gas remaining and if the ring is red there is less than :15 minutes of gas remaining.

The Pressure and Time app is currently designed for oxygen cylinders whose normal oxygen capacity is 1850 psi when full, but the user can enter as high as 2000 psi for gas expansion.
Additional gases will be added in the future.  If you have a specific gas you would like to have available please contact us at www.adsopp.com.

The Pressure in Time (P/T)  Manager comes with a 30 day free trial period where the user can cancel at any time by deselecting the buy option (or whatever you are using to turn the subscription on/off) anytime before the end of the 29th day. After this you will be charged $3.99 USD for a one year (365 day) subscription. The subscription will end at midnight on the 365th day after the day of purchase.
• Auto-renewable subscription- The subscription will renew itself automatically at the end of the 365 day period unless the auto-renew option is turned off as described below.
• 30 day - Free trial period, no obligation and can cancel anytime during that period. After 30 days the user will get charged $3.99 for an annual subscription.
• Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew itself at the end of 365 days unless auto-renew is turned off at least 24 hours before the end of the current period.
• Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase.
• Privacy policy:https://adsopp.com/eops/terms

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Free 30 days trial | $3.99 | per year |



## Version history (last 4 releases)

### 1.3 — 2026-04-22

Rebuilt to support latest iOS versions

### 1.2 — 2021-07-08

Fixed a minor bug which prevented iPhone users from entering decimal values.

### 1.1 — 2021-04-12

This app has a new name, Pressure in Time Manager or simply The "P/T Manager".  
The app has added a PSI remaining display below the Time (remaining) display which can be used to compare the mathematical/predicted solution against the actual instrumentation. Should the PSI between the iPad app and the actual gauge begin to deviate, the user can update the PSI manually in the P/T Manager and the app will reverse engineer a new flowrate which will appear in red font next to the app flow rate. This feature will allow the user to check the accuracy of existing equipment by resetting the P/T Manager and inserting the new (red font) flow rate into the app with an updated PSI. The iPad app and actual instrument information should now be the same. This will save time and money by validating the instruments accuracy using this app.

### 1.0 — 2020-12-23

No release notes.

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## More apps by Aeronautical Data Systems Inc.

- [Ergo360 Fuel & O-2 Solutions](https://appshunter.io/ios/app/ergo360-fuel-and-o-2-solutions/id552304846)
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- [V2 Checklist](https://appshunter.io/ios/app/v2-checklist/id1323804522)
- [Ergo180](https://appshunter.io/ios/app/ergo180/id1354425604)
- [ErgoBlue](https://appshunter.io/ios/app/ergoblue/id1481779003)

All apps by Aeronautical Data Systems Inc.: https://appshunter.io/developer/552304929

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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 2026-05-16.*