Developer tools

Tsumobi

Website

Mobile applications have so far been nightmares to implement. It's often hard to gain adoption due to complicated installs and near impossible to get users to upgrade their version once the product has shipped. Tsumobi hopes to solve this problem by creating their own language. The new language will sit on top of J2ME and process applications downl

Overview

Mobile applications have so far been nightmares to implement. It's often hard to gain adoption due to complicated installs and near impossible to get users to upgrade their version once the product has shipped. Tsumobi hopes to solve this problem by creating their own language. The new language will sit on top of J2ME and process applications downloaded (via URL) for Tsumobi enabled sites. This means that developers will be able to change Tsumobi applications on the fly and have Tsumobi enabled phones automatically get the updates just by visiting a link.

Company description As recorded 2026-11-08
Developer toolsInfrastructureDevelopersDevelopers

Founders & team

Joshua Wilson

Founder

MIT06, YC W07, founder of 3 venture-backed companies, love helping other startups.

LinkedIn
Founder profile As recorded 2026-09-15
2team members reported
Source-reported As recorded 2026-09-15

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite unreachable
Last website check2026-11-11
Location · source statedBoston, MA, USA; Cambridge, MA, USA
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The source reports an inactive or acquired company; current product identity needs review.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationdescriptive evidenceclassified market and modelsourced people
startup.observe Directory coverage · Sources & method