Treat this as a starting point rather than a closed room. Curiosity about Botswana usually comes with curiosity about Southern Africa more broadly, and South Africa or Namibia are never more than a skip away once you get going.
You will not need a translation app for Botswana. English is the working language, and the only real adjustment is tuning your ear to an unfamiliar accent for the first minute or two.
UTC+2 is the offset to remember for Botswana. When it is 10pm there it is 8pm in London and 5pm in São Paulo, and that late-evening stretch is when random chat is at its least rushed.
No cost and no upsell. The site is ad-free and donation-funded, so people in Botswana get the same unrestricted access as the rest of Southern Africa.
No sign-up, and no app either — it runs in the browser. Confirm you are 18 or over, pick video, voice or text, and start; a session at 10pm in Botswana leaves no more of a trace than one at noon.
Chats from Botswana run in English from the first line, which makes this an easy place to start if you would rather not handle a language barrier and a stranger at the same time. Evenings there — 10pm at UTC+2 — are when those chats run longest.
Around 10pm in Botswana, which is UTC+2. From London that means 8pm, and from São Paulo, 5pm. Earlier in their day you will still get matches, just fewer from that part of Southern Africa.