HackMyIP vs SLF
Same instrument, two spec sheets — measured, not claimed.
HackMyIP vs SLF: common questions
Which is more reliable, HackMyIP or SLF?
On our scheduled checks, SLF leads on measured uptime — HackMyIP at —% versus SLF 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 HackMyIP and SLF need an API key?
Neither needs a paid key — HackMyIP is callable with no signup, and SLF is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call HackMyIP and SLF from the browser?
Yes — both HackMyIP and SLF 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 HackMyIP and SLF free for commercial use?
HackMyIP allows commercial use on its free tier, and SLF 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.