aid: cleverdeck
name: Cleverdeck
description: >-
  CleverDeck is a spaced-repetition flashcard application for iOS, built by an
  independent developer to help people learn and retain vocabulary and other
  material more efficiently. It ships hand-made premium decks covering roughly
  the 3,000 most common words in major foreign languages — Spanish, French,
  German, Chinese, Japanese, Arabic, Italian, Portuguese, Turkish, Persian,
  Russian and advanced English — with translations, transliterations, images,
  native-speaker audio, and example sentences in both English and the target
  language. The app uses the SM-2 spaced-repetition algorithm (as popularized
  by SuperMemo and Anki) with a customizable learning schedule, cross-device
  sync, and full offline support. It is free to create and study your own
  content, with unlimited access to the premium decks for $3 per month.
  CleverDeck is a consumer mobile product and publishes no public API, SDK,
  developer portal, or agent-facing surface.
url: https://raw.githubusercontent.com/api-evangelist/cleverdeck/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://s3.amazonaws.com/cleverdecksite/images/favicons/favicon-192.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
x-enrichment-note: >-
  Consumer iOS spaced-repetition flashcard app by a solo developer. No public
  API, OpenAPI/spec, SDK, well-known, security.txt, or llms.txt surface exists
  (probed 2026-07-18). Enrichment limited to identity hygiene, real published
  link-properties, and a domain-security probe.
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Education
- Language Learning
- Flashcards
- Spaced Repetition
- EdTech
- iOS
- Mobile App
- Vocabulary
apis: []
common:
- type: DomainSecurity
  url: security/cleverdeck-domain-security.yml
- type: Website
  url: https://cleverdeck.com/
  name: CleverDeck Website
- type: Documentation
  url: https://cleverdeck.com/manual/
  name: CleverDeck Manual
- type: TermsOfService
  url: https://cleverdeck.com/tos/
  name: Terms of Service
- type: PrivacyPolicy
  url: https://cleverdeck.com/privacy/
  name: Privacy Policy
- type: Support
  url: mailto:justin@cleverdeck.com
  name: Support Email
- type: X
  url: https://twitter.com/clever_deck
  name: CleverDeck on X
- type: Download
  url: https://itunes.apple.com/us/app/cleverdeck-spaced-repetition-flashcards/id881765907
  name: Download on the App Store
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence