Simple pricing.Start free.

No. The free plan has no credit card requirement and no time limit. Use it for as long as you want.

Each person who uses Synter on your project is a seat. $14/month per seat on monthly, or $10/month per seat on the annual plan ($120/year).

Yes. Switch anytime from billing settings. When switching to annual, you'll be credited for unused time on your current period.

Synter supports Claude (Anthropic) and GPT-4 (OpenAI). You bring your own API key and choose your provider in project settings.

Yes. Synter uses your API key so you control your AI costs directly and your data stays between you and your chosen provider.

Your data is never deleted. Projects and features beyond the free limits become read-only. You can still view and export everything.

Yes. Row Level Security isolates data per project and user. API keys are encrypted at rest. We never train AI models on your data.

Absolutely. Each project is isolated with its own settings, team, and GitHub connection. Agencies use Synter to scope, plan, and build client work.

Spec-driven development is the practice of writing structured specifications before writing code. Instead of jumping from an idea to code generation, you describe the feature, generate a validated spec with user stories and acceptance criteria, plan a roadmap, and then break it into tasks. Synter automates this entire pipeline with AI.

ChatPRD and AI chatbots generate documents. Synter enforces a workflow. Every spec flows into a roadmap, every roadmap breaks into tasks, and every task syncs to GitHub. The AI remembers your product across sessions. The output is not a doc that gets ignored — it is structured context that follows your code to production.

No. Synter is designed for product managers, solo founders, and non-technical builders. Every phase is a form, a checklist, or a plain-language conversation. No terminal, no markdown, no jargon.

From a short description, Synter generates a complete Foundation document covering your project overview, tech stack, architecture, design system, and guidelines. From individual feature descriptions, it generates user stories ranked by priority, acceptance criteria, edge cases, technical roadmaps with complexity estimates, and atomic development tasks.