About BioOnSun
Building bioinformatics tools that solve small, everyday annoyances.
What is BioOnSun?
BioOnSun (juonsun.com/bioonsun) is a free collection of online bioinformatics tools built for researchers, students, and hobbyist biologists who work with DNA and RNA sequences. The goal is simple: let anyone run the calculation they need directly in their browser, without sign-up or installation.
Why we built it
Preparing an experiment or working through coursework often means doing small, repetitive tasks — like reversing a sequence and swapping it for its complement. Many existing tools are cluttered with ads, feel dated on mobile, or require an account you don't really need. BioOnSun started as a personal project to fix these small frictions, one tool at a time.
Our principles
- Privacy first: sequence calculations run in your browser (JavaScript), not on our servers. Nothing you paste in is transmitted or stored.
- Free, with minimal ads: core tools stay free, and any advertising is placed to avoid getting in the way of the tool itself.
- Accuracy: calculation logic is checked against established standards such as the IUPAC nucleotide code conventions.
- Ongoing expansion: starting with the Reverse Complement calculator, we plan to add more commonly needed tools such as a GC content calculator and a protein translator.
Who runs this
BioOnSun is built and maintained by an independent developer. Bug reports, feature requests, and collaboration inquiries are always welcome via the contact page.
Changelog
- July 2026 — BioOnSun launches with the Reverse Complement calculator.