Developer API

App Store data, one API call away

Apps, reviews, keywords, rankings and competitors — all from a single REST API with enriched data. Build it into your own tools in minutes.

Try for free Read the docs

One API, all the data

Everything AppSigma tracks is available programmatically, with the same enrichment our dashboard uses.

Apps & Metadata

App details, ratings, pricing, version history and category rankings straight from the App Store.

Reviews & Sentiment

Fetch reviews across countries with AI sentiment, topics, and translations included.

Keywords & Rankings

Keyword positions, search volume and difficulty scores for any app or competitor.

Competitors

Discover competing apps, compare performance and surface keyword gaps programmatically.

Up and running in three steps

1. Get your API key

Sign up free and generate a key from your organization settings in seconds.

2. Call the API

Send a request with your key. REST endpoints, JSON responses, no SDK required.

3. Pay per credit

Start on the free tier and only pay for what you use. Credits never expire mid-cycle.

See full credit costs and plans on the pricing page.

Example request 
curl https://api.appsigma.io/v1/apps/284882215 \
  -H "Authorization: Bearer YOUR_API_KEY"
Illustrative example — see the docs for the full endpoint reference.

Start building with App Store data today

Create a free account, generate your API key and make your first call in minutes.

Try for free