Apptimize

Apptimize is a mobile-first A/B testing, multivariate testing, and feature management platform for optimizing user experiences across iOS, Android, web, and server-side channels. Product teams use Apptimize to run experiments, ship feature flags with controlled rollouts, deliver instant updates without app-store releases, and set dynamic variables that can be changed on the fly. Apptimize ships client and server SDKs for iOS/tvOS/watchOS, Android, Web, React Native, Python, Flutter, and Roku, plus a REST API for retrieving variant assignments and tracking events from any device or backend. Apptimize was acquired by Airship in 2019; its developer documentation and SDKs remain published at apptimize.com/docs, and the marketing site now redirects to airship.com.

Apptimize publishes 2 APIs on the APIs.io network: Events API and Experiments API. Tagged areas include Company, A/B Testing, Feature Flags, Feature Management, and Experimentation.

Apptimize’s developer surface includes documentation, API reference, support, authentication, and 13 more developer resources.

🌐 Visit website 📡 Source on GitHub

36.5/100 thin ▬ flat Agent 51/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.5

AccessSelf serve

2 APIs 1 MCP Servers

CompanyA/B TestingFeature FlagsFeature ManagementExperimentationMobileSDKOptimization

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.5

Composite quality — 36.5/100 · thin

Contract Quality 15.1 / 25

Developer Ergonomics 12.2 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 9.3 / 10

Agent readiness — 51/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 15

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

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/apptimize: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

Apptimize Events API

Track user events used as experiment and feature-flag goals.

Apptimize Experiments API

Retrieve variant assignments and experiment data for a user.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Build 2

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: apptimize
name: Apptimize
description: Apptimize is a mobile-first A/B testing, multivariate testing, and feature management platform for optimizing
  user experiences across iOS, Android, web, and server-side channels. Product teams use Apptimize to run experiments, ship
  feature flags with controlled rollouts, deliver instant updates without app-store releases, and set dynamic variables that
  can be changed on the fly. Apptimize ships client and server SDKs for iOS/tvOS/watchOS, Android, Web, React Native, Python,
  Flutter, and Roku, plus a REST API for retrieving variant assignments and tracking events from any device or backend. Apptimize
  was acquired by Airship in 2019; its developer documentation and SDKs remain published at apptimize.com/docs, and the marketing
  site now redirects to airship.com.
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://apptimize.com/favicon.ico
url: https://raw.githubusercontent.com/api-evangelist/apptimize/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
- gv
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- A/B Testing
- Feature Flags
- Feature Management
- Experimentation
- Mobile
- SDK
- Optimization
apis:
- aid: apptimize:apptimize-events-api
  name: Apptimize Events API
  description: Track user events used as experiment and feature-flag goals.
  humanURL: https://apptimize.com/docs/apis/rest-api.html
  baseURL: https://api.apptimize.com
  tags:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/apptimize-events-api-openapi.yml
  - type: APIReference
    url: https://apptimize.com/docs/apis/rest-api.html
- aid: apptimize:apptimize-experiments-api
  name: Apptimize Experiments API
  description: Retrieve variant assignments and experiment data for a user.
  humanURL: https://apptimize.com/docs/apis/rest-api.html
  baseURL: https://api.apptimize.com
  tags:
  - Experiments
  properties:
  - type: OpenAPI
    url: openapi/apptimize-experiments-api-openapi.yml
  - type: APIReference
    url: https://apptimize.com/docs/apis/rest-api.html
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: http://apptimize.com
- type: DeveloperPortal
  url: https://apptimize.com/docs/
- type: Documentation
  url: https://apptimize.com/docs/
- type: APIReference
  url: https://apptimize.com/docs/apis/rest-api.html
- type: Support
  url: mailto:support@apptimize.com
- type: Packages
  url: packages/apptimize-packages.yml
- type: SDKs
  url: packages/apptimize-packages.yml
- type: Authentication
  url: authentication/apptimize-authentication.yml
- type: Conventions
  url: conventions/apptimize-conventions.yml
- type: ErrorCatalog
  url: errors/apptimize-problem-types.yml
- type: Lifecycle
  url: lifecycle/apptimize-lifecycle.yml
- type: MCPServer
  url: mcp/apptimize-mcp.yml
- type: LLMsTxt
  url: llms/apptimize-llms.txt
- type: Conformance
  url: conformance/apptimize-conformance.yml
- type: DataModel
  url: data-model/apptimize-data-model.yml
- type: DomainSecurity
  url: security/apptimize-domain-security.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence