Playtri

Sports Tech / Fitness Tech United StatesiOS

Personalized triathlon training built for your goals.

An iOS app that auto-generates load-based triathlon training plans from each athlete's goals and schedule, with Garmin and Wahoo device integration.

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Market

United States

Platform

iOS

Role

Full-cycle from scratch

Devices

Garmin & Wahoo sync

Status

Live

Subscription access

Model

Swim, bike & run

Disciplines

Garmin & Wahoo API

Integration

Load-based algorithm

System

The brief

Playtri had a proven load-based coaching system only available through expensive one-on-one coaching — no scalable digital version existed for a broader audience.

The challenge

Converting a deeply manual coach-driven methodology into a fully automated algorithm generating correct personalized plans without human intervention.

Our solution

An iOS app encoding Playtri's entire load-based system into an automated plan generator, with Garmin and Wahoo integrations closing the feedback loop.

What we built

Six things that make Playtri work.

Automated plan generation

Fully personalized plans based on goal event, ability, and weekly schedule.

Load-based methodology

Swim, bike, and run workouts built on Playtri's proprietary coaching system.

Garmin Health API sync

Actual activities sync automatically and match against scheduled sessions.

Wahoo Web API sync

Smart trainer sessions from Wahoo devices sync and close the training loop.

Completion tracking

App matches real device activities to scheduled sessions — no manual input needed.

Coach admin panel

Playtri coaches monitor athlete plans, review compliance, and manage users.

Tech stack

The tools we picked, and why we kept them simple.

Boring tech where boring is right, sharp tech where it counts.

Swift 5 (iOS)Node.jsMongoDBGarmin Health APIWahoo Web APIFirebase FCMSendgridSmartlook

Results

What changed after launch.

Live on App Store

Status

Active US athletes

Market

Coach-approved system

Validation

Sprint to Ironman

Scope

Available on

Try Playtri today.

Download on theApp Store

The developers always listened to what I had to say and made me feel very comfortable with the process.

Morgan Johnson

Head Coach

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