iPhone beta in active development

The little app for the ride between yacht and shore.

TenderTo keeps the essentials visible: where you are, how fast you’re moving, where your vessel is, where the dinghy has been, and what the tide is doing.

Explore TenderTo Support the build

29° 53.123′ N 081° 19.372′ W ACCURACY ±3 m

2:09 PM L 0.4 ft now

SPEED 4.2 KNOTS

TRIP 1.28 NMTOTAL 5.06 NM

Built in the open

A small community can make a real difference.

I’ll publish TenderTo’s progress here as the beta grows.

Beta users

People helping shape a more useful tender companion.

Raised for medical expenses

Direct support that keeps me going—and keeps TenderTo moving.

Beta builds

Frequent improvements, tested aboard and ashore.

Last updated August 2026

Useful when it matters

The essentials, legible at a glance.

TenderTo is built around the moments that happen after you leave your yacht—and the information that helps you get back.

Daylight navigation

Large GPS coordinates in degrees and decimal minutes, speed in knots, a high-contrast chart, and an enlarged position view for urgent communication.

Your way home

Save the Home Vessel position, see the straight-line distance back, and keep the return point with the trip until the dinghy is safely aboard.

Every dinghy trip

Record track, speed, location, distance, and ashore walking as one outing. Review previous trips and see aggregate distance statistics.

Tides and daylight

See a nearby NOAA tide curve, sunrise, and sunset. Tap through to compare the three closest prediction stations and their distance from the tender.

Your tender record

Keep the tender, vessel, motor, registration, owner, and photo details together on the iPhone for quick reference.

A report when needed

Create a shareable PDF with identification details and photos if the tender is stolen or others need to help locate it.

Why I built TenderTo

I wanted to leave the cruising community something useful.

I was recently diagnosed with heart failure. Instead of starting a GoFundMe, I decided to build something practical for the community that has given me so much joy—in the hope of leaving you with a tool you can use.

If TenderTo adds value to your dinghy rides, you can help me pay my medical expenses by sending a contribution through Venmo.

You keep me going through this medical crisis. I keep adding features and enhancing this tool.

Support @ewanoleary on Venmo

About the sailor behind the app

Hi, I’m Ewan O’Leary.

I’m a cruising sailor and the person designing, building, and testing TenderTo. The idea comes from everyday life aboard: the dinghy is how cruising sailors reach a new shore, explore it, and return home to the boat.

TenderTo is still a beta. I’m developing it one practical feature at a time, based on real trips and real feedback from the water.

support@tenderto.app See our progress

Come aboard early

Help shape TenderTo.

Testing, practical feedback, and word of mouth all help.

Get beta updates