Doomersion

Doomersion (doomlingo.ai) is a consumer mobile language-learning app that teaches languages by "doomscrolling" — a vertical, TikTok-style feed of short-form videos in the learner's target language, matched to their level, with clickable explainer subtitles that let you tap any word for an instant translation and grammar note. Founded by Mostafa Afr and backed by Y Combinator, the app ships on iOS and Android. Doomersion exposes no public developer API, SDK, or documentation surface; this record is an API Evangelist network company profile capturing its public web and identity footprint.

Doomersion is profiled on the APIs.io network. Tagged areas include Company, Language Learning, EdTech, Mobile App, and Consumer.

Doomersion’s developer surface includes support and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub

9.9/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

0 APIs

Company Language Learning EdTech Mobile App Consumer Short-Form Video Y Combinator

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 9.9/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.8 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 3.9 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Regulatory Posture applies to this provider. Its tags matched the Education & Research regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/doomersion: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

AppStore

AppStore

GooglePlay

GooglePlay

Source (apis.yml)

aid: doomersion
name: Doomersion
description: Doomersion (doomlingo.ai) is a consumer mobile language-learning app that teaches languages by "doomscrolling"
  — a vertical, TikTok-style feed of short-form videos in the learner's target language, matched to their level, with clickable
  explainer subtitles that let you tap any word for an instant translation and grammar note. Founded by Mostafa Afr and backed
  by Y Combinator, the app ships on iOS and Android. Doomersion exposes no public developer API, SDK, or documentation surface;
  this record is an API Evangelist network company profile capturing its public web and identity footprint.
url: https://raw.githubusercontent.com/api-evangelist/doomersion/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://doomersion.com/L2%20BLACK.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Language Learning
- EdTech
- Mobile App
- Consumer
- Short-Form Video
- Y Combinator
apis: []
common:
- type: DomainSecurity
  url: security/doomersion-domain-security.yml
- type: Website
  url: https://doomersion.com/
- type: PrivacyPolicy
  url: https://doomersion.com/privacy
- type: TermsOfService
  url: https://doomersion.com/terms
- type: Support
  url: https://doomersion.com/support
- type: AppStore
  url: https://apps.apple.com/us/app/doomersion/id6753957215
- type: GooglePlay
  url: https://play.google.com/store/apps/details?id=com.mostafaafr.doomlingo
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