Comparison

P/T Manager vs Pipe Sizer

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

Head to head
About

P/T Manager

Features
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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

About

Pipe Sizer

This utility app assists in selecting appropriate pipe diameters for water systems, supporting both pressure and gravity flow calculations. It offers automatic recommendations based on user-defined limits and incorporates multiple pipe materials and unit systems.

Highlights
  • Pressure pipe sizing
  • Gravity pipe sizing
  • Automatic pipe size recommendations
  • Multiple pipe material support
  • SI and Imperial units
  • Hazen-Williams and Manning equations
Features
Read full description

PipeSizer helps you quickly choose the right pipe diameter for water systems — for both pressure and gravity flow. PRESSURE PIPE SIZING • Size pipes from a target flow rate. • Set your maximum friction rate and velocity limits. • Calculations based on the Hazen-Williams equation. GRAVITY PIPE SIZING • Size pipes from a target flow rate. • Evaluate flow capacity and velocity under gravity conditions. • Calculations based on the Manning equation. KEY FEATURES • Automatic recommended pipe size based on your limits. • Multiple pipe materials with built-in coefficients (more added over time). • Works in both SI and Imperial (I-P) units. • Designed for engineers, plumbers, and irrigation/drainage design workflows. Feedback is welcome — it directly shapes upcoming updates.

Screenshots

P/T Manager3 screens
Pipe Sizer4 screens

Verdict

The call

The clearest difference is price: P/T Manager at Free against Pipe Sizer's $0.99. P/T Manager also leads on update cadence (every 4 months vs every 27 months) and iOS requirement (15.0 vs 17.6). Pipe Sizer's advantage is in-app purchases (none vs 1). On 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

P/T Manager is free to download; Pipe Sizer costs $0.99 up front. P/T Manager sells 1 in-app purchase, starting at $3.99 per year. Pipe Sizer asks for nothing beyond the download.

UpkeepUpdate frequency

P/T Manager ships an update every 4 months, Pipe Sizer every 27 months. The most recent releases landed on October 5, 2026 and October 11, 2026 respectively.

Scorecard4 real differences · 6 level
P/T Manager versus Pipe Sizer: the parameters behind the verdict, then further details
ParameterP/T ManagerPipe Sizer
PriceFree — better$0.99
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 4 months — betterEvery 27 months
AdsNoNo
In-app purchasesYesNo — better
Monetization—Paid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size1 MB1 MB
Age rating4+4+
DeveloperAeronautical Data Systems Inc.Wassim Murr

In-app purchases

1 purchases

P/T Manager

Subscriptions1
  • Free 30 days trial1 Month trial$3.991 Year
None

Pipe Sizer

No in-app purchases

Questions

Is P/T Manager free?
P/T Manager is free to download, with in-app purchases available.
Is Pipe Sizer free?
Pipe Sizer costs $0.99, with no in-app purchases.
Do P/T Manager or Pipe Sizer have ads?
Neither P/T Manager nor Pipe Sizer shows ads.
Which is updated more often, P/T Manager or Pipe Sizer?
P/T Manager ships an update every 4 months, and Pipe Sizer every 27 months. Most recently, P/T Manager was updated on October 5, 2026 and Pipe Sizer on October 11, 2026.

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