Overview
SideKit is a consumer app studio that makes Island, a different kind of screen time app.
Founders & team
Previously Sidekit, SideKit, Approxima
Ethan Pronev
FounderCo-founder at Approxima, building the trust layer to help software development scale with AI. Previously worked on trading systems at Jane Street and Citadel Securities. Computer Science graduate from the University of Waterloo, class of 2025.
Ashish Selvaraj
FounderCo-founder at Approxima, building the trust layer to help software development scale with AI. Previously worked on delta live tables at Databricks, an infra testing engine at Microsoft and graduated with a double degree in Computer Science and Business from Waterloo in 2025.
Founded 2025 · Source ↗
Sources & observations
Y Combinator
Profile depthverified profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedToronto, ON, Canada
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 of 6 areas documented
Source-based assessment · automated evidence rules
The retained text does not establish product availability or customer use.
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 definitionsindependent websitesource corroborationreachable websitedescriptive evidencesourced peoplesourced founding year