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.

Your divers and their SCR history are kept in your own iCloud and shared with Time to Surface and the other Diver.Today apps on the same Apple Account: add a buddy in one, and it appears in the other. Your saved briefs follow you to your other iPhones. Settings shows Cloud sync. The default gradient factors are now 45/95, which gives longer no-stop limits than 40/85. A pair you chose yourself is kept.

Minimum gas now comes from your own SCR: two divers breathing at your SCR × the conditions multiplier, from the depth you leave to the surface, never below 40 bar. When gas ends a deep segment, you leave it on the minimum gas, and the way up is breathed from it. The (?) beside the ascent explains your levels, the minimum gas as C × A × T worked on your own dive, and Leave at. Longer explanations open as a sheet you can read in full. Clearer wording throughout, every explanation checked against real plans.

Every (?) behind a calculated figure now shows its formula: what goes in, where each value comes from, and how it is rounded. SCR, surface consumption rate, replaces SAC throughout, and the second level is now the second deep segment. Each depth in the profile shows the gauge you leave it on and the minimum gas there, rounded the same way. Where the two are the same, only the minimum gas shows. The turn pressure says where you reach it: at 30 m, or on the way up to 10 m. A plan with no time at depth says why and quotes the fill that buys a minute. A second deep segment is offered only at depths that plan. Minimum Decompression Profile: the bottom time counts from leaving the surface, and the ascent is 9 m/min to half your depth or 9 m, then 3 m/min.

A second level of bottom time. Add a depth and minutes after your time at maximum depth — deeper or shallower — and the gas, the turn pressure and the NDL are planned across both before the ascent. Minimum gas for each level: what to leave the first level with, what to leave the second with, and the figure from 9 m up, on one line. The profile shows the gauge you leave each depth on, to the nearest 5 bar, on the card, in View details and on the shared picture. View details and the shared picture are the same page — starting fill, turn pressure, minutes and bars per depth, minimum gas — and the picture carries the App Store link and a QR code for a buddy.

Who is diving now sits on the photo at the top of the page, under the title — one tap into the diver picker, with the source of their breathing rate beside the name. The strategy, limits and conditions tiles, and the cylinder tiles, take less of the screen: the same choices, without the empty space under them, so the plan is reached with less scrolling. VoiceOver announces when a plan is refused and why, and when the refusal clears.

Time at max depth is now minutes you set, on a slider that runs up to the most your gas and your NDL allow — the maximum is printed beside it, with what caps it. The old percentage picker is gone, and so is the caption that tried to explain it. A new look for the plan page: a photo header, icons on every section, the choices as tiles, and a share button that exports the profile and every figure from the results as one picture for a buddy or a group chat. The ascent is drawn beside a hold-by-hold breakdown — maximum depth first, then each level — and View details opens it full screen with a third column: the gauge pressure you leave each depth on, walked from the same gas bill as the turn pressure. Minimum gas is one tile, with the reserve from 9 m up beside it where it applies, and a (?) on the ascent explaining why the levels are where they are. Smaller fixes: a scroll that starts on the fill slider no longer moves it, and the slider shows in red the fills the plan cannot use.

Longer dives on a single cylinder. Once the whole team is at 9 m, nobody is going back down, so the reserve two divers need from there is smaller than the one they needed at depth — and the plan now spends the difference at 9 m instead of surfacing with it. The turn pressure, the minimum gas at maximum depth and your time at maximum depth do not move; the extra is shallow time, on halves and all-usable plans. The card prints both figures: the reserve for the dive, held until you are all at 9 m, and the reserve from 9 m up, with the pressure you will surface on beside it. Settings has a Rate Turn Pressure row under Feedback, and the app asks once — after the second dive you save — whether you would rate it.

The app asks for your breathing rate once, and now offers all three ways to answer it: from a dive you did, the number off your computer, or a tier. There is a way past it too — skip for now and it plans on the typical tier, marked as a preset rather than as yours, until your first logged dive replaces it. The starting fill now ends at the cylinder's own rating. An 11.1-litre aluminium 80 stops at 207 bar and the steels at 232, so a plan can no longer be funded on gas the cylinder cannot legally hold. Minimum gas does not depend on the fill, so this shortens dives rather than reserves. Settings says each thing once. Every footer is one line you act on, and what is true but read once now sits behind the (?) in its section heading — which opens as a full sheet at large text sizes, so it can be read to the end.

The ascent is now a ladder of levels, not a slow drift. Half your depth, then 5 m, with a middle level on some plans — each with its own time and depth on the chart, and each one a depth to hold or be shallower than. A plan you can brief and check a computer against. A dive the no-stop limit ends no longer surfaces with gas to spare. The plan spends the remaining gas at 9 m, where coming off the deep segment the gas runs out long before the nitrogen does. Deep dives on big cylinders gain the most. Ascent rate is now a setting, 3 to 9 metres a minute, default 9. The reserve follows it: plan a slower ascent and the reserve grows, and it never falls below the 9 m/min figure. The Minimal Decompression Profile keeps its own prescribed ascent. Minimum gas now covers the whole ascent. It used to be worked out as far as the safety stop, which left the last five metres unfunded; it runs to the surface now. And ascent time is charged exactly instead of rounded up to the whole minute, which removed a jump in the reserve between neighbouring depths. The two changes mostly cancel: from 30 m it is still 64 bar out of a 15-litre steel and 86 out of an aluminium 80; from 40 m the reserve is 2 bar higher. Maximum operating depth now states the fact about the gas: air reads 56 m at ppO2 1.4. The app still plans no deeper than 40 m. The plan screen was redrawn — sliders for depth, time and fill, a depth label on every step of the profile, and the card says plainly what ends the dive. Your reserve funds a straight ascent at the rate you planned. It is not a budget for a slower one.