aid: binary-thumbs
name: Binary Thumbs
description: >-
  Binary Thumbs (operating name "Binary Thumb", Y Combinator Summer 2012) was a
  San Francisco startup founded in 2012 by Josh Leong, Michael Lin, and Matt
  Monson to reinvent the spreadsheet for touch devices. Its single product,
  Grid, was a collaborative grid-based spreadsheet and organizational app for
  iPad and iPhone that let people keep notes, pictures, people, and places in a
  freeform grid rather than rigid rows and columns. The company raised roughly
  $2.15M across a 2012 YC round and a 2013 seed, with participation from angel
  and institutional investors, and appears on the Andreessen Horowitz public
  investment list. Y Combinator now lists the company as inactive; Josh Leong
  led it as CEO from 2012 to 2016. Binary Thumb never shipped a public API,
  developer portal, or documentation surface -- it was a consumer iOS product
  company. Its lasting public technical footprint is the BinaryThumb GitHub
  organization and a handful of open-source React and JavaScript utility
  libraries published to npm.
url: https://raw.githubusercontent.com/api-evangelist/binary-thumbs/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
x-status: inactive
x-status-source: https://www.ycombinator.com/companies/binary-thumb
x-status-note: >-
  Y Combinator lists the company (batch S12, product "Grid") as Inactive. The
  Grid iOS App Store listing returns 404 and the historical binarythumb.com
  domain now serves unrelated affiliate/gambling SEO content, so it is NOT
  wired as a Website or DeveloperPortal property. No API surface exists:
  no OpenAPI, docs, auth, sandbox, changelog, status page, or event surface
  were found, so no artifact pointers are emitted for those types.
x-founded: '2012'
x-founders:
- Josh Leong
- Michael Lin
- Matt Monson
x-location: San Francisco, CA, United States
x-yc-batch: S12
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
image: https://github.com/BinaryThumb.png
tags:
- Company
- Inactive
- Y Combinator
- Productivity
- Spreadsheets
- Mobile
- iOS
- Consumer Software
- Open Source
apis: []
common:
- type: GitHubOrganization
  name: Binary Thumb on GitHub
  url: https://github.com/BinaryThumb
- type: Packages
  name: Binary Thumb open-source npm packages
  url: packages/binary-thumbs-packages.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 1
  pass: local-v1