httpSMS vs Rendex
Same instrument, two spec sheets — measured, not claimed.
httpSMS vs Rendex: common questions
Which is more reliable, httpSMS or Rendex?
On our scheduled checks, Rendex leads on measured uptime — httpSMS at —% versus Rendex 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 httpSMS and Rendex need an API key?
Both ask you to authenticate — httpSMS uses an API key and Rendex uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.
Can I call httpSMS and Rendex from the browser?
Yes — both httpSMS and Rendex 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 httpSMS and Rendex free for commercial use?
httpSMS has unclear commercial terms, and Rendex 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.