Life & fun · September 2, 2026
Shindo Endurance Training
Your first triathlon, on the watch you already own
Shindo Endurance Training launched on September 2, 2026.
What it does
Getting into triathlon usually starts with a purchase — a thousand-dollar watch arrives before the first swim lesson does. Shindo takes the other side. Apple Health is the only way data gets in, so any watch that already records sleep, heart rate and workouts is enough. Swim, bike, run, brick and strength, with a race goal that works back from your start date. The plan is adaptive, not a calendar: miss a session or swap a run for a ride, and the week re-flows from where you are.
Shindo is a triathlon coach for iPhone that runs on the watch you already own — and rebuilds your week when you miss a session instead of turning it red.
Swim, bike and run on the watch you already own. Shindo reads whatever it writes to Apple Health and builds a week around what your body actually absorbed — then rebuilds it when you miss a session. Requires iOS 26.4 · iPhone · Works with any watch that writes to Apple Health Not doing a triathlon? Running, cycling and swimming work on their own — the same plan, the same rebuild, one discipline instead of three. Every number you see in Shindo comes from a deterministic algorithm running on your iPhone — the same input always produces the same answer. The model receives finished numbers and writes about them, and where its wording disagrees with a computed value, the computed value wins.…from shindo-app.com
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Runo 2.0Jan 2026 · runoapp.com · ▲132I built Runo after years of inconsistent marathon training. GPS watches tell you your pace AFTER it's too late. So I made a simple metronome that plays a beat at your target cadence (steps per minute). New in 2.0: Apple Watch haptics (run to the beat without headphones), Strava sync, and social features. 4.7 on App Store, 10k+ runners. Would love feedback from the HN community.
Smart RunnerJun 2026 · runnerapp.pro · ▲94Ran my first marathon. Didn’t want to keep paying so much for Runna. So I built a running coach app, and then kept improving it more and more, i think it’s pretty good now. Give it a try and share your thoughts.
TransitionMay 2026 · transition.fun · ▲76Hey HN, I’m Alex, a triathlete, dad, and software engineer. I’ve been building Transition — an app for triathletes that creates adaptive training plans based on your goals, schedule, and workout data (Garmin, Strava, etc). Most plans are static, which never really worked for me as a parent and someone with an unpredictable schedule. Transition adjusts every week using your actual workouts and progress, so the plan changes when you miss a session, set a new PR, or need to shift your priorities. I built this because nothing else was flexible enough for my life, and I’m curious if others have…
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