Tinker app offers simple User Interface and super audio quality VoIP calls in affordable rates. Tinker works on all iOS devices and supports calling over WIFI/EDGE/3G/LTE. In order to use this app, end users can register with their mobile number.
Key features include:
1. Lowest battery usage with highest reliability / stability on appstore
2. Lowest latency of all iOS softphones.
3. Exceptional voice quality.
4. Bandwidth normalization.
5. Voice/Video packet negotiation
6. Bluetooth support.
7. Excellent audio quality
8. Supports calling over WIFI/EDGE/3G/LTE.
9. Background / multitasking support.
10. Integration with the native iOS contact list.
11. Speakerphone,mute and hold features.