Herald Performance

This page lists the basic statistics on performance around Herald that are quoted in various places on the website. We also provide links to source data.

Area	Value	Date updated	Basis
Battery usage	1-2% per hour	31 Jan 2021	13.5 hour tests of the ‘Fair Efficacy Formula’ also log battery usage. See the 31 Jan 2021 tests for details
Worldwide phone support	98%	1 Dec 2020	Statcounter stats. See explanation on stats page for details
UK phone support	97.5%	1 Dec 2020	Statcounter stats. See explanation on stats page for details
OS Support	iOS 9.3+, Android 5+	1 Dec 2020	API verified via Apple/Google docs. Tested back to iOS 9.3, Android 6 with Herald test app
Phone detection	100%	28 Nov 2020	As per Fair Efficacy Formula tests for details
iOS distance estimate mean delay	~1 second	28 Nov 2020	See ‘RSSI’ lines in test logs of each test. 28 Nov 2020 test for details
Android distance estimate mean delay	0.5-5 seconds	28 Nov 2020	Variable by device. At least once per scan. See 28 Nov 2020 test for details