I built a virtual pet that gets stronger when you exercise

Name: I built a virtual pet that gets stronger when you exercise
Availability: InStock
Author: georgegreenldn

by georgegreenldn·Apr 1, 2026·7 points·6 comments

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AI Analysis

●●SolidCrowd PleaserCozy

Revives Fitbit's killed Bingo feature while competitors charge monthly subscriptions.

Strengths

•Weekly goals prevent streak guilt when life interrupts your fitness routine
•Motmot pet creates emotional attachment unlike generic step counters
•Connects to existing fitness trackers instead of requiring new hardware

Weaknesses

•Fitness gamification is crowded with Zombies Run, FitRPG, and dozens of alternatives
•Virtual pet mechanic alone won't retain users past the novelty phase

Post Description

Hello HN,

I built Motion, a fitness app where your virtual pet (we call it a Motmot) grows and gets stronger as you become more active.

I wanted a fitness app that didn't feel like a fitness app. Most tools are either data-heavy dashboards or generic streak counters. Neither kept me moving. I thought a creature that visibly reflects your health might create a different kind of attachment.

The pet is tied to a broader system: weekly challenges against friends, points for any type of movement, and personalized goals that recalibrate based on your actual activity history rather than fixed targets. It connects with phones, smartwatches, and other fitness apps so it works however you already track movement.

We're also running a beta of Fit Bingo, a bingo card of weekly fitness tasks, which has been more popular than I expected.

Would love to hear what you think, especially if this sounds like something you'd actually use.