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A customizable AI virtual-boyfriend voice companion app
Visit Official WebsiteProduct Type
Software
Platform
Android
Languages
Chinese
Regions
China
Pricing
Freemium
Price
Free download; in-app purchases/subscription (tiers in-app)
Free Trial
✓ Trial Available
Free tier offers text/voice chat, basic AI creation and interaction features
Last updated 2026-09-12· Content established
Data may be delayed — always check the official website for the latest info.
Visit Official WebsiteAbout This Tool
Eighth Day Heartbeat (第八日心跳) by SoulMatrix is an AI virtual-boyfriend voice companion app offering text and voice chat, a customizable AI partner (appearance, voice, personality), story-based interactions and conversation memory; it positions itself around emotional companionship and psychological comfort with proactive care, non-judgmental listening and long-term presence (per Xiaomi App Store and official site).
Background
Eighth Day Heartbeat is developed by Hangzhou Lingwei Matrix (SoulMatrix) and is an AI chat app centered on emotional companionship and psychological comfort, offering stable, gentle, non-judgmental company (per soulmatrix.cn and Xiaomi App Store listing).
Technology
The app supports continuous dialogue and AI memory that builds more coherent exchanges from chat history; it offers personalization of appearance, voice and personality, plus story interactions and Q&A gameplay (per store listing).
Market
It targets users needing nighttime companionship, emotional lows or a private outlet; it differentiates with voice companionship, proactive care and a customizable AI boyfriend, using a free-download plus in-app/subscription model (per store and third-party coverage).
Best For
Users who want someone 'present' during lonely nightsPeople who like customizing a dedicated AI boyfriend's look/voice/personalityThose needing a non-judgmental, private outlet to talkUsers who prefer voice companionship over plain text chat
Editorial Note
Eighth Day Heartbeat enters emotional companionship as a 'virtual boyfriend', with its text+voice duality and customizable persona as highlights—suited to users who want proactive care and someone 'present' at night.
Strengths
- + Text and voice chat, with voice companionship fitting lonely-night scenarios
- + Deep customization of look/voice/personality for a dedicated AI boyfriend
- + Proactive care and non-judgmental listening for long-term companionship
- + Memory capability makes conversations more coherent
Drawbacks
- − Leans entertainment and comfort; limited professional psychological support
- − Early-stage build (v0.2.x); features and stability still maturing
Value Assessment：Worth a try for users wanting an always-present, customizable virtual boyfriend for emotional companionship; the free tier covers core chat and voice.
External Resources
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All information on this site is for reference only. Data may be delayed — always verify on the official website. Listings are in no particular order.