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Building·CardletAI flashcards

KYNE Systems — Software Studio

Precisionsoftware.No filler.

DroneA — E — A fifth
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KYNE Systems builds software products, AI tools, and web platforms —

See our workWork with us
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Built for
SaaS FoundersEd-TechInternal ToolsAI / MLB2B PlatformsAutomation

What we do

Built for the problem,
not the template.

⬡

Software Products

End-to-end product builds — architecture, UI, backend, deployment. Shipped as a standalone app or white-labeled for your business.

No templates. No Webflow. Just code.

◈

AI Integration

Embed intelligence into existing workflows. Custom models, RAG pipelines, structured output — whatever the problem actually requires.

LLMs are a tool, not a product strategy.

◻

Web Platforms

Client-facing platforms built for performance and editability. Real-time data, CMS, auth — production-ready from day one.

Fast by default, not as an afterthought.

◇

Custom Tooling

Internal tools, automations, and scripts that eliminate the manual work your team shouldn't be doing.

If it's manual and repeatable, it shouldn't be.

How we work

Four steps.
No surprises.

01

Scoping

A direct conversation about the problem, timeline, and fit. No intake forms, no NDAs on day one — just an honest discussion about whether the work makes sense.

02

Architecture

Before code is written, the system is mapped. Stack, data model, third-party integrations — agreed on before work begins.

03

Build

Iterative development with real check-ins along the way. Updates as work progresses. No surprises at handoff.

04

Ship

Deployed, documented, and fully handed off. Ongoing support and retainer arrangements available for teams that need continuity.

Selected work

What we've shipped.

View all →
2026

Cardlet

AI-powered flashcard platform with spaced repetition, adaptive tutoring, quiz modes, and a dashboard for course material management.

AIWebSaaS
↗
2025

Website Builder

Multi-site SaaS admin for contractors — AI-assisted content editing, real-time Firestore sync, Vanta WebGL backgrounds, and a client CMS with revision requests.

SaaSWebAI
↗
2025

Gerald

Semantic memory layer for AI assistants — Flask + SQLite-vec, ONNX embeddings, vector search, and a multi-specialist debate engine over FastAPI.

AIBackendPython
↗
More coming soon

What people say

Real words.
Real results.

“

The AI tutor is unlike anything I've tried. When I mark a card wrong it immediately explains the concept — I went from struggling to confident in two weeks.

Cardlet user

Computer Science student

“

KYNE turned our vague automation idea into a working internal tool in under two weeks. No agency overhead, no handoffs — just working software delivered fast.

Operations lead

B2B SaaS startup

“

Fast delivery, clean code, and they understood what we actually needed instead of what we said we needed. Would work with them again without hesitation.

Founder

Early-stage software company

We ship things
that actually work.

Start with the constraint

Every project begins with what can't change. Time, budget, tech stack — we design from the edge, not the middle.

Cut relentlessly

If it doesn't serve the user directly, it doesn't ship. Scope stays tight until it earns the right to grow.

Own the whole stack

We build everything — design, frontend, backend, infra. No handoffs, no blame, no surprises.

Built with

Next.jsReactPythonFastAPIFirebaseSupabaseFlutterOpenRouterSQLiteTailwind CSSNext.jsReactPythonFastAPIFirebaseSupabaseFlutterOpenRouterSQLiteTailwind CSS

Live product

See what KYNE ships.

Cardlet is a fully-deployed AI flashcard platform — built, maintained, and growing. A real product, not a portfolio mockup.

SM-2 spaced repetition

Each card surfaces based on your confidence history.

AI tutor on demand

Claude explains any card you mark unknown — streamed, in context.

Multiple quiz modes

Study, multiple-choice, written grading, and match game.

Course material importer

Upload a PDF — AI generates a 10-card study set in one click.

Open source (AGPL-3.0)

Full source on GitHub. Forkable, auditable, extensible.

cardlet.app

Study Session

Question

What is the SM-2 algorithm used for?

Know it
Struggling
Unknown

500+

Users

12k+

Cards studied

94%

Retention rate

Try Cardlet ↗GitHub ↗

Common questions

FAQ

Software products, AI integrations, web platforms, and internal tooling. The common thread: the problem is real, the scope is clear enough to start, and the work can be owned end-to-end.

With a short conversation about what you're building and what's blocking you. No intake forms, no NDAs on day one — just a direct discussion about fit.

Depends on scope. Focused tools can be two to three weeks. Larger products are typically two to four months. An honest timeline is part of every scoping conversation.

Yes. Part of the work is translating between what you need and what gets built. No technical background required.

Handoff is clean — source code, documentation, deployment access. Ongoing support and retainer arrangements are available for teams that need continuity.

What it costs

Transparent
from day one.

Marketing Site

$500

+ $85/mo maintenance

  • ◈Custom design — no templates
  • ◈CMS so you can edit content yourself
  • ◈Fast, deployed on Vercel
  • ◈Delivered in about a week

Web Platform

Custom

scoped per project

  • ◈SaaS, dashboards, client portals
  • ◈Auth, database, and payments
  • ◈API design + backend architecture
  • ◈Ongoing retainer available

AI + Tooling

Custom

scoped per project

  • ◈RAG pipelines + LLM integrations
  • ◈Automation and internal tools
  • ◈Embedded AI features
  • ◈Custom model fine-tuning

All projects start with a free scoping call — no commitment required. Get in touch →

Have a project?

KYNE takes on a small number of projects at a time. Let us know what you're building.

Start a conversation