Dalton 1.1: Your Calculations, Anywhere

Dalton 1.1 is available now on the App Store. This update adds link sharing, home screen and lock screen widgets, and shareable formula cards. The theme is straightforward: your gas calculations should go where you need them, not stay locked inside one device.

Share any calculation as a link

Every calculation in Dalton can now be shared as a URL. Tap the share button, and Dalton generates a link and a QR code for that specific result – the gas mix, the depth, the ppO2 limit, all encoded in the URL. Send it to a buddy, drop it in the team group chat, or display the QR code on a tablet at the dive briefing.

If the recipient has Dalton installed, the link opens the calculation directly in the app with all parameters pre-filled. If they do not, the link falls back to a web preview that shows the full result. No app required to read a shared gas plan.

This matters for dive team coordination. On a technical dive, everyone on the team needs to agree on the gas plan. Previously, that meant reading numbers off a whiteboard or passing a phone around. Now a team lead can run the calculation once and share the link. Every diver on the team sees the exact same numbers – the same fO2 fraction, the same ppO2 limit, the same MOD. No transcription errors. No “I thought you said 32 percent.”

Pro tool calculations – Return Number, Dive Profile Advisor, Bottom Time – are also shareable. The link shows a result summary before any unlock prompt, so a team lead with Pro can share a gas consumption calculation with divers who have the free version. They see the result. The tool did its job.

Shareable formula cards export as branded images with the calculation details, the result, and the source formula. These are designed for dive briefing boards, group chats, and anywhere a static image is more practical than a link. One calculation, verified once, distributed to the entire team.

Widgets for your home screen and lock screen

Dalton 1.1 ships two WidgetKit widgets, both free.

Quick Launch is a 2x2 home screen widget with four buttons: MOD, Best Mix, EAD/END, and Gas Properties. One tap opens the tool. No unlocking, no navigating. This exists because at a fill station or on a dive boat, the fewer taps between you and your calculation, the better. Put it on your home screen and Dalton’s core gas tools are always one tap away.

Quick MOD Reference displays the pre-computed maximum operating depth for a gas mix you select in the app. It is available as a home screen widget and as a lock screen widget in three formats: circular, rectangular, and inline. The lock screen version means you can glance at your wrist or your phone without opening anything and see the MOD for the mix you are diving today.

A note on how this works: all MOD values are pre-computed inside Dalton and stored for the widget to read. The widget extension itself runs zero calculation logic. This is a deliberate design choice – widgets should display data, not compute it. The values update when you change your selected mix in the app.

No other technical diving gas calculator on iOS offers WidgetKit integration. For divers who check their MOD repeatedly throughout a dive day – at the fill station, on the boat, during the briefing – having that number on the lock screen removes friction from a routine task.

Polish

The share interface has been cleaned up. Previously, share actions were scattered across different parts of the UI. In 1.1, all sharing options – link, QR code, formula card image – are consolidated into a single toolbar menu. One button, all options.

Tool explainer screens have improved readability. The explanations that describe what each calculator does and how the formulas work have been reformatted for better scanning. These are reference material that divers come back to, and they should be easy to read.

Theme tokens from the DFUI design system now drive all styling throughout the app, replacing the last instances of hardcoded values. This is infrastructure work – not visible to users – but it ensures visual consistency and prepares the foundation for future updates.

QR code rendering has been fixed for edge cases where certain calculation parameters produced codes that were difficult to scan in low-light conditions.

Pricing update

Starting with this release, Dalton Pro moves from $14.99 to $19.99. The four core gas calculation tools remain free. The price increase reflects the continued investment in new tools and capabilities. If you already own Dalton Pro, nothing changes for you.

Who this is for

Dalton 1.1 is built for the same divers who use 1.0 – technical divers, cave divers, trimix blenders, fill station operators, and dive team leads. The difference is that calculations no longer live only on the device that computed them. Share your gas plan with your team. Pin your MOD to your lock screen. Export a formula card for the briefing board.

Your gas plan is not someone else’s problem. But now it is easier to make sure everyone is looking at the same numbers.

Dalton is available on the App Store and Google Play. Available in English, Spanish, and French.