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Userstack vs Wahlumfragen Datenbank API

Same instrument, two spec sheets — measured, not claimed.

APIUserstackNEW—Wahlumfragen Datenbank APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Userstack vs Wahlumfragen Datenbank API: common questions

Which is more reliable, Userstack or Wahlumfragen Datenbank API?

On our scheduled checks, Wahlumfragen Datenbank API leads on measured uptime — Userstack at —% versus Wahlumfragen Datenbank API at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Userstack and Wahlumfragen Datenbank API need an API key?

Wahlumfragen Datenbank API needs no key, while Userstack requires a free API key. If you want to start calling without signup, reach for Wahlumfragen Datenbank API first.

Can I call Userstack and Wahlumfragen Datenbank API from the browser?

Yes — both Userstack and Wahlumfragen Datenbank API send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Userstack and Wahlumfragen Datenbank API free for commercial use?

Userstack has unclear commercial terms, and Wahlumfragen Datenbank API has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.