The international calling app from Venus Cloud Ltd. — an independent British software company.
When Microsoft retired Skype in May 2025, it quietly removed something the modern messaging apps never replaced: an affordable way to ring an ordinary phone number in another country. WhatsApp, FaceTime and Viber are excellent — as long as the person you're calling has the same app installed. A parent's landline, a doctor's office in Warsaw, or a bank hotline in Manila doesn't.
CallSky picks up where Skype left off. You top up a small credit balance, dial any landline or mobile in more than 180 countries, and pay only for the minutes you use. There is no subscription and nothing for the other person to install — their phone simply rings.
Because international dialing is genuinely confusing, we also publish free country code guides covering number formats, area codes and sensible calling hours for the destinations we serve. They are the same references our own team reaches for.
CallSky is designed, built and supported by Venus Cloud Ltd., the software company Hermann founded in England in 2011. Venus Cloud has stayed deliberately small and self-funded for more than a decade — no outside investors, no growth-at-any-cost targets. Alongside CallSky, the company develops Tegant, a privacy-focused VPN.
Being small is the point: the people who answer your support emails are the same people who write the code. Messages to [email protected] are read and answered by a human, usually within one working day.
Venus Cloud Ltd.
Company number
07563716
Incorporated
15 March 2011
Registered in
England & Wales
Legal form
Private limited company
Registered office
1 Richmond Road, Lytham St Annes, Lancashire FY8 1PE, England, United Kingdom
For support or anything else, email [email protected].
App users can also reach us through the Contact Support and Discord Community options inside the app, and you can find Hermann on X.
Download CallSky and make your first international call in minutes.
Prefer the browser? Use the web app.