ITIS vs TLE
Same instrument, two spec sheets — measured, not claimed.
ITIS vs TLE: common questions
Which is more reliable, ITIS or TLE?
On our scheduled checks, ITIS leads on measured uptime — ITIS at 97.1% versus TLE at 88.2% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, ITIS or TLE?
TLE has the lower median latency in our checks — ITIS responds in 1767 ms versus TLE at 1090 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do ITIS and TLE need an API key?
Neither needs a paid key — ITIS is callable with no signup, and TLE is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call ITIS and TLE from the browser?
Only TLE is browser-friendly — it returns CORS headers over HTTPS. ITIS needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are ITIS and TLE free for commercial use?
ITIS has unclear commercial terms, and TLE 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.