ByteRunner Pro

Everything unlocked, once.

The free scratchpad runs all four JVM languages. Pro adds the tools you reach for when a scratch turns into real work — databases, a debugger, AI, and more.

Buy Pro — $49 one-time Or start the free 14-day trial

Perpetual license · every machine you own · offline activation · 14-day refund

What Pro adds

Database connectivity

PostgreSQL, MySQL/MariaDB, SQLite, H2, SQL Server and DynamoDB — browse the schema, then query tables as typed, autocompleted accessors or with raw SQL.

Debugger

Real breakpoints, stepping, live variables, and an Immediate window for evaluating expressions while paused.

AI assistant

Explain, write, and fix code with your own key — Anthropic or OpenAI — or run it fully local with Ollama so nothing leaves your machine.

Autocomplete

Code completion across your query, your extensions, and your database columns.

Package management

Pull any Maven Central dependency into a query with @file:DependsOn.

Charting

Turn results into plots without leaving the scratchpad.

Questions

Is it really a one-time purchase?Yes. $49 once, for a perpetual license — no subscription, no renewal, and it keeps working forever on the version you have.

How many machines can I use it on?Every machine you own. It's licensed to you, not to a device.

How does activation work?You get a license key by email. Open ByteRunner → Help → Manage License → paste it → Activate. Activation is fully offline — no account, no server check.

Can I try before buying?Every install includes a 14-day Pro trial with everything unlocked. No card, no sign-up.

What if it is not for me?Email Christian.Oleson@TheTotalDev.com within 14 days of purchase for a full refund — no reason required.

Payments are handled by Lemon Squeezy, our merchant of record, who collect any applicable VAT / sales tax. See the docs to get started, ordownload ByteRunner and try Pro free for 14 days.