Runs locally/No login/Free forever
Flagship
Jaconir NMR
Lab
One workflow. Four instruments. Remove impurities, predict shifts, understand splitting, then assign — you stay in control.
Impurity → Predict → Split → Assign
- 01
Clean
Impurity Solver
Identify solvent impurity peaks before you trust the spectrum.
- 02
Predict
Chemical Shift Predictor
Estimate expected ¹H environments from molecular context.
- 03
Split
Splitting Pattern Simulator
See why peaks split — n+1, Pascal intensities, J-coupling.
- 04
Assign
Peak Assignment Assistant
Assign peaks to atoms with shift, multiplicity, and structure.
Full library
Game development, developer utilities, and creator tools — same local-first philosophy as NMR Lab.
Browse everythingGame Development
Workflow
Build a 2D game
Plan Your Game
Game Design Doc Generator
- 2
Generate Your World
2D Procedural Level Generator
- 3
Create Production Assets
Sprite Sheet Generator
- 4
Build Smart Tiles
Bitmask Autotile Generator
- 5
Generate Collision
Auto Hitbox Generator
- 6
Create Retro Audio
Retro SFX Generator
- 7
Balance Gameplay
RPG Economy / XP Balancer
- 8
Design Rewards
Loot Table Simulator
Built for evidence,
not guesswork.
Deterministic browser tools — not cloud models that invent answers.
01
Privacy first
Most tools run client-side. Your data stays on your machine.
02
Instant access
No accounts, no paywalls, no trials. Open a tool and start working.
03
Research-ready
Transparent logic you can verify — not opaque AI output.
Frequently asked questions
Everything you need to know about Jaconir.
What is Jaconir?
Jaconir is a set of free browser tools built around two workflows: an NMR lab for analytical chemistry, and a 2D game development pipeline — plus developer and creator utilities that support them. Everything runs locally and needs no account.
Are all the tools really free?
Yes. All our tools are 100% free to use with no sign-ups, subscriptions, or hidden fees. Our mission is to make advanced tools accessible to everyone.
Is my data safe when using your tools?
Absolutely. Most of our tools are client-side, meaning your data is processed directly in your browser and never uploaded to our servers.
Do I need to create an account?
No. All tools work instantly without any registration. Just visit the tool page and start immediately.
What types of tools do you offer?
Jaconir NMR Lab for analytical chemistry, plus game development utilities, marketing/SEO tools, developer helpers, and creator instruments — all in the browser.
Can I use these tools in my research?
Yes. All tools are free for academic, personal, and commercial use. Please verify critical scientific results with your primary software suites before publication.
Built for research — and builders.
Science, games, marketing, and developer utilities. No tracking. No paywalls. High-fidelity instruments in the browser.
