Getting Started
Get your first App Store API call working in under two minutes.
1. Get your API key
Sign up for a FetchLayer account and generate an API key from the dashboard. Free tier included — no credit card required.
2. Make your first request
Search for an app by name, or fetch reviews by app ID.
Search for an app
bash
curl -X POST https://api.fetchlayer.dev/appstore/search \
-H "Authorization: Bearer ss-your-key" \
-H "Content-Type: application/json" \
-d '{"query":"notion","country":"us"}'Fetch app reviews
bash
curl -X POST https://api.fetchlayer.dev/appstore/reviews \
-H "Authorization: Bearer ss-your-key" \
-H "Content-Type: application/json" \
-d '{"appId":"1232780281","country":"us","pages":1}'Tip
The
country parameter changes both the storefront and the language of returned reviews — use it to check localization or pricing across regions.
Tip
Pass
since (an ISO 8601 date, e.g. 2026-01-31) to only get reviews from that date forward. With the default sort=recent, pagination also stops as soon as it passes the cutoff — so a narrow date window is billed for far fewer pages than pages alone requests. That saving doesn't apply with sort=helpful, since Apple's feed isn't date-ordered there.
3. Understand the response
Every endpoint returns structured JSON. Search returns app listings with ratings and metadata. Reviews returns customer feedback with ratings and text.
json
{
"results": [
{
"appId": "1232780281",
"name": "Notion: Notes, Tasks, AI",
"subtitle": "Plan, organize, track projects",
"rating": null,
"ratingCount": null,
"editorsChoice": true
}
]
}