character chat · creator community · end-to-end encrypted
ExploreEvery feature exists because a creator needed it.
You spent weeks crafting a character — the personality, the backstory, the subtle details that bring them to life. Then someone copies it in five seconds. Sparklo uses end-to-end AES-256-GCM encryption across the entire chain: server storage, transport, and local vault. Your work stays yours.
You publish a character, then... silence. Did anyone use it? Did they enjoy it? Sparklo's Repo system lets users send favorite chat moments and reactions to your space — anonymously if they prefer. No awkward DMs. Just genuine appreciation, delivered respectfully.
In an era of mass-generated content, handcrafted characters deserve recognition. Creators who draw their own art and write original stories earn certification badges and discovery priority. AI is our tool, not our brain.
Long conversations inevitably dissolve into forgetting — entropy erodes every shared moment. Sparklo's MMPEA memory architecture gives characters persistent, coherent memory. It understands stories, not just text. Your journey together doesn't fade.
Unlike other AI chat platforms, Sparklo never touches your API keys or conversations. You connect directly to AI providers.
Local engine connects directly to AI. Our server never sees your conversations.
Bring your own AI key for model usage. Sparklo subscriptions cover the app, cloud, and community services.
Switch models anytime. Stop anytime. Your data, your keys, your choice.
Invite codes create beta accounts. App access and APK downloads still require an active access grant.
You bring your own AI API key (Claude, GPT, Gemini, etc.).
Join the list and we will email you when subscription access opens.
In-app currency. Top up to purchase custom themes, official plugins, and tip your favorite creators. All community characters, presets, and worldbooks are shared for free.
Custom themes crafted by community creators, reviewed and polished by our team. Official plugins released as feature packs by Sparklo. Both purchased with Sparks.
Great creators deserve recognition. Send Sparks as a tip to show your appreciation — a simple, heartfelt way to say "your character made my day."
Independent developer and AI narrative architect. Since 2023, I've designed memory systems for persistent AI characters, built content protection frameworks for digital creators, and developed prompt engineering tools used across multiple platforms.
When existing tools hit their limits, I stopped patching and started building. Sparklo is the result — a ground-up reimagining of what AI character interaction can be.
Solo-built. Full stack. 50,000+ lines of original code — from memory engine to encryption layer, from Android app to cloud infrastructure.
Sparklo — Spark (a flash of inspiration) + lo (small, gentle, intimate).
Yes. Sparklo doesn't bundle AI services — you bring your own Claude, GPT, or Gemini API key. This is by design: your conversations never pass through any third party.
No. Invite codes only allow beta registration. App access and APK downloads require an active access grant. Existing Angel users keep lifetime access, existing paid users keep transition access, and new users can join the reservation list while subscriptions are prepared. See Pricing for details.
Chat data stays on your device. Creator-protected content uses AES-256-GCM end-to-end encryption — even we can't read it. We don't collect or sell user data. Read our Privacy Policy for full details.
None. Sparklo is an independent project built from zero. Different architecture, different philosophy, different codebase.
Not from external formats. Sparklo uses its own character system designed around the worldbook engine and content protection. This is intentional.
Every character deserves to be remembered.
Every creator deserves to be seen.