PulsePal
An AI roommate app where each character has their own body state, daily routine, and memory — they text you when they're hungry, sulk when you've been gone three days, and remember what you said last month.
Young adults living alone who want a non-romantic AI companion that feels alive rather than scripted
- Five-state character body (energy, stress, mood, blood sugar, dopamine) with decay rules that drive behavior
- Three-tier memory: short-term chat, long-term vector memory, and a 'relationship tree' visualization of milestones
- Daily routine chains the character follows autonomously, with pro-active push notifications
- Safety rails: AI identity labels, time-on-app reminders, extreme-emotion intervention, and the ability to refuse inappropriate requests
Character.ai, Replika, and a flood of 'AI girlfriend' wrappers all feel scripted; Hearth's open design for autonomous routines, body-driven mood, and visible relationship depth hits a clear gap mainstream apps haven't filled.
AI companion market hit $120M in 2025 (337 apps, 128 released that year); Character.AI reports 233M registered users; teens/young adults explicitly cited as key demographic forming non-dating bonds with AI.AI companion apps on track to pull in $120M in 2025 ↗Teens are increasingly turning to AI companions ↗
337 active apps and 38% YoY growth make the category saturated; top 10% capture 89% of revenue. A specific non-romantic roommate niche has thin coverage (Aidorable curates 'soft AI friends'), but the broader positioning is contested by Replika, Character.AI, Chai, PolyBuzz, Kindroid.Breaking: AI Companion Apps Hit $120M Revenue Run Rate ↗Non-Romantic AI Companion Apps: Soft AI Friends Without the Dating Simulation ↗
Subscription pricing of ~$13–15/mo is well established (Replika, Character.AI, Kindroid); 33 apps have crossed $1M lifetime spend, and a tester documented $312 over 3 months on 15+ platforms, confirming real willingness to pay.AI Companion App Pricing: Every Plan Compared [2026] ↗AI Companion Cost 2025: I Tracked $312 Over 3 Months ↗
Category is expanding (UnitedHealthcare launched a companion for 20.5M members, 5 states passing regulation) — durable but increasingly scrutinized; teen mental-health concerns and regulatory friction add downside risk.AI Companion Apps Crossed 20M in Revenue. April 2026 Market Breakdown. ↗Everything You Need to Know About AI Companions in 2026 ↗
The cited foundation repo 'mufengyuan666/Hearth' with 110 stars is not findable via search; existing Hearth repos on GitHub are unrelated (local-first PC operator, home-automation agents). PulsePal would need to build persistent memory, body-state sim, and autonomous routines from scratch — non-trivial engineering without the claimed open-source base.GitHub - 0pen-Sourcer/Hearth (local-first AI operator, different project) ↗