Instant Heart Rate vs Telephone
A side-by-side look at Instant Heart Rate and Telephone. For an in-depth review of either product, follow the links below.
Instant Heart Rate
Sport & Health
Instant Heart Rate is an app that uses your phone's camera to measure your heartbeat. It works by detecting subtle color changes in your finger that occur when blood flows through it. The app is free, easy to use, and provides a quick way to check your pulse rate.
heart-ratehealthfitness
Telephone
Social & Communications
Telephone is an open source SIP softphone and VoIP client for making audio and video calls over the internet. It supports standard telephony features like call waiting, call forwarding and voicemail.
voipsipsoftphonetelephonycalling