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.
Sparklo keeps model choice in your hands. Android/local mode connects from your device; Hosted Web uses Sparklo's hosted engine so the browser can run the full app.
On Android, the local engine keeps private app data and provider keys on your device.
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. A Sparklo membership unlocks the app, cloud sync, and creator community services.
You bring your own main AI API key for chat generation. Sparklo membership covers the app, cloud sync, platform embeddings, and creator/community services.
Want a reminder before the next access wave? Leave your email here. Invite codes only create beta accounts; app use and APK downloads still require membership or an existing grant.
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 model credits — you bring your own Claude, GPT, Gemini, OpenRouter, or compatible provider. Android/local mode connects from your device; Hosted Web connects through Sparklo's hosted engine using your configured provider profile.
No. Invite codes only allow beta registration. App access and APK downloads require a Sparklo membership or an existing access grant. Existing Angel users keep lifetime access, and existing paid users keep transition access. See Pricing for details.
Android/local mode stores private app data on your device. Hosted Web stores private app data in a per-user server database so the browser version can work. Creator-protected content uses Sparklo's protection and masking flow. We don't 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.