Cost
More users,
a much bigger AI bill.
Early Access sign-ups open
Focus on your app.
Croche handles
the AI.
Croche is a developer tool for adding AI features to your app and running them. You don’t need to build your own AI harness. Memory, context and cost are taken care of.
Coding agents build the app. Croche runs the AI inside it.
- Founded by a former Qualcomm AI Research senior researcher
- AI faculty from Seoul National University and Sungkyunkwan University
- 10+ patents filed
- Hackathon co-hosted with SNU’s startup support center
Sound familiar?
You can build the app.
But how do you add the AI?
A coding agent can build your app in an afternoon. The AI inside it is still the hard part.
Quality
Switch to a cheaper model
and the answers get worse.
Testing
Is our AI any good?
How would we even know?
Operations
Fine in testing,
odd in production. Why?
Croche handles the hard parts. You focus on your app.
Connecting the AI, managing memory, keeping quality up and costs down. We’ve got it.
How to use
Plan your app as usual.
Add one last line.
Connect Croche to Codex as a plugin, or to Claude Code over MCP. Once it’s installed, end your request with one line: “Build the AI parts with the Croche SDK.”
- 1
Plan it and vibe-code it
Decide what you want to build. Everything except the AI features, you build with your coding agent as usual.
- 2
Connect the Croche SDK
Croche Runtime gives the AI the memory and context it needs, and lets it run your app’s features.
- 3
Check quality and cost, then improve
In Croche Studio, virtual users try your app and rate it. Watch performance and cost on one dashboard as you improve it.
Build a conversational game set in a fantasy inn. The player talks to the innkeeper, the cook and a bard, and takes on quests. Every character has a distinct personality and remembers the player for days. Characters should stay consistent over long play, and running costs must stay low. Build the AI parts with the Croche SDK.
Codex plugin · Claude Code MCP
Built with Croche
Apps like these. You can build them too.
We built four very different apps with Croche ourselves.
Demo app · AI characters in a game
Lantern Inn
About 50 turns of chat per ad view
NPCs with distinct personalities talk and offer choices that fit the time of day and quest progress.
What Croche handles
- Memory and personality per character
- Time of day and quest state
- Fewer tokens in long chats
You could also build
AI characters & companionsCharacters that remember and grow with each user
Interactive stories & gamesStories that unfold with every word and choice
Education & learningTutors that adapt to what each learner gets wrong
Productivity & lifestyleAssistants that understand context and take action
Croche in numbers
Better quality.
A lighter bill.
71%
lower AI running cost
with about 20% higher quality scores
1 Internal benchmark: four in-house demo apps, each built with Croche and built directly by a coding agent, compared on the same test scenarios. Results vary by app, model and usage.
₩10
for about 50 long chat turns
one ad view can pay for one AI chat session
2 Based on AI processing cost in a demo case, assuming ₩10 ad revenue. Varies by model and conversation length; other operating costs not included.
0
separate AI backends needed
AI runs right inside your app
3 No separate backend is needed to run the AI. Model APIs and your app’s own backend may still be needed depending on your setup.
Two parts of Croche
Run it inside your app.
Make it better in Studio.
Croche Runtime
The heart that powers your app’s AI
Keep memories, trim context
Only the memories that matter are used, so characters stay consistent in long chats and you spend fewer tokens.
Connect AI to your app
AI can use your app’s features, like giving items, searching or booking, within the rules you set.
No extra AI backend
No separate backend to run the AI. It runs right inside your app, so there’s less to pay for and maintain.
Croche Studio
Keep checking, keep improving
Virtual user testing
First-time users, users who change their minds, users who return days later. Virtual users try your app and find what to fix.
Quality and cost at a glance
See whether your AI works, how good its answers are, and what it costs, on one dashboard.
Find a better setup
Compare models and settings under the same conditions and apply the one you choose.
Who it’s for
You don’t need to be
an AI expert.
Solo makers with an idea
You know what you want to build, but models, prompts and memory feel overwhelming.
Vibe-coding designers & PMs
A coding agent built your app in no time, but the AI inside it feels clumsy.
Small teams adding AI
You want to ship AI features and keep cost and quality in check, without an AI platform team.
Students & hackathon builders
You want to go past the prototype and actually launch.
Early Access
Have an AI app in mind?
Be among the first to try Croche.
Sign up now and you’ll be the first to hear when we open.
- Priority Early Access invite
- An SDK getting-started guide
- Launch news and tips for building AI apps
FAQ
Questions?
We’ve got answers.
Can I use Croche without knowing AI?
Yes, that’s the goal. Croche takes care of which model to use, how to remember conversations and how to keep costs down. You focus on the experience you want to create.
Do I need to know how to code?
Not necessarily. Croche is the engine (SDK) for the AI inside your app; it doesn’t build the whole app. You build the app yourself or with a coding agent like Claude Code or Codex, and connect its AI through Croche.
What kinds of apps can I build?
Web and mobile apps. Croche fits especially well where conversational AI is at the core: character chat that remembers, interactive games, AI tutors, shopping assistants and to-do assistants.
When can I start?
We’re opening soon. Everyone who signed up hears first, by email.