Onoff
Second phone number in a single app, no extra SIM or device needed
Onoff is a mobile application that provides one or more additional phone numbers without requiring a second phone or SIM card. It lets users keep their personal number on the same device while managing calls, SMS/MMS, voicemail and contacts through the app. The service is positioned for personal, professional, family and online-shopping use cases, and it can route calls over GSM through the mobile network as well as over VoIP.
Core capabilities include an On/Off mode, integrated visual voicemail, contact synchronization, call forwarding, masked numbers, and international calling with credits. The mobile app is available on iOS and Android. A Premium option adds advanced features such as calling from multiple devices, availability scheduling and call notes. Onoff Business provides professional numbers for companies and employees.
Onoff is aimed at individuals who need a separate number and at businesses that want professional lines. The homepage lists a national mobile number with call minutes and SMS/MMS allowances, plus international calling with credits. It also references a plan for independent workers and freelancers, a free trial for the Premium option, and a separate Onoff Business offering.
12 alternatives to Onoff
Ranked by how well each tool replaces Onoff: shared features, audience, price and popularity.
Free calling and texting app for iOS and Android.
Covers 2 of 15 key features and has a free plan.
Free plan61 out of 100 matchFreeA second phone number on your existing phone for privacy and small business use.
Covers 3 of 15 key features.
60 out of 100 match$7.99/moYour private second number. Or your first.
Covers 1 of 15 key features and has a free plan.
Free plan60 out of 100 matchContact sales- 59 out of 100 matchFree
Cheap international calling app for iPhone, Android and Windows devices
Covers 1 of 15 key features and has a free plan.
Free plan59 out of 100 matchContact salesThe best business phone app for entrepreneurs.
Covers 2 of 15 key features and starts cheaper.
57 out of 100 match$3/moGet a phone number that protects your life
Covers 1 of 15 key features and has a free plan.
Free plan57 out of 100 matchFreeKeeping people connected, wherever life happens
Covers 2 of 15 key features and has a free plan.
Free plan57 out of 100 matchFree- 56 out of 100 match$19.95/mo
Business phone numbers for entrepreneurs.
Covers 1 of 15 key features and has a free plan.
Free plan56 out of 100 match$9.95/moCheap international calls from mobile, landline or computer, starting at 0.3c per minute.
Covers 3 of 15 key features.
56 out of 100 matchContact sales