Turn Pressure – Dive Planner
Scuba gas & no-deco calculator
About
This app calculates dive turn pressure, minimum gas reserves, and bottom times for recreational divers. It provides dynamic planning based on specific dive parameters, cylinder size, and gas mixes, offering detailed ascent profiles and tracking personal gas consumption rates.
What's New in Turn Pressure
1.9.1
October 28, 2026
Your settings and your last dive setup follow you to your other devices through iCloud. When a newer setup arrives from another device, the plan page offers it with one tap and never changes what you are looking at on its own. Metric or imperial is one choice for Turn Pressure and Time to Surface: change it in one and the other follows. A diver changed on two devices keeps both changes, such as a new name on one and a new SCR on the other, and an older edit made offline never replaces a newer one. A diver's SCR history is now a chart with a scale, dates and a point for each measurement.
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FAQ
What is the main purpose of Turn Pressure?
Turn Pressure is designed to calculate crucial dive planning parameters like turn pressure, minimum gas reserves for two divers, and bottom time limits. It helps divers plan their dives accurately before entering the water, ensuring they have sufficient gas and adhere to no-decompression limits.
Does Turn Pressure support different gas mixes?
Yes, Turn Pressure supports planning for air, EAN28, EAN32, and EAN36. It also allows for gradient-factor presets from 30/70 to 100/100, enabling users to match their dive computer settings.
How does Turn Pressure handle repeat dives?
For repeat dives, Turn Pressure accounts for the nitrogen remaining in your system based on your previous dive's depth and duration, and your surface interval. This provides a more accurate plan for subsequent dives rather than relying on general assumptions.
Can Turn Pressure be used for decompression diving?
No, Turn Pressure is strictly a no-stop, recreational planner. It does not plan decompression dives, stage gases, or bailouts, and is not intended for use during the dive itself.
How does Turn Pressure calculate minimum gas reserves?
Unlike other calculators that may provide a flat reserve, Turn Pressure calculates the minimum gas needed to ascend from the deepest point for two divers based on the actual cylinder volume being used. This ensures a more personalized and accurate reserve calculation.
Does Turn Pressure have ads?
No, Turn Pressure is ad-free. As a free application, it does not contain advertisements, allowing for an uninterrupted planning experience.
What is the update frequency for Turn Pressure?
The application was last updated on September 17, 2026, indicating a recent update. While specific update frequency isn't detailed, this suggests ongoing development and maintenance.
What devices is Turn Pressure available on?
Turn Pressure is currently supported on iPhones. Future expansion to other platforms like Android may be considered by the developer.
