10 Minutes Timer, with 30 sec subtle notification sound & changing backgrounds

Timer 10 minutes, seconds 600 with beatiful background images changed each 30 seconds, alarm at the end.
Background images used in chronological order:
Wolfgang Hasselmann (@wolfgang_hasselmann) see it here: unsplash.com/photos/vyUXxjO4QFk
Soroush Karimi (@soroushkarimi) see it here: unsplash.com/photos/VgUykFOlF9I
Daniele Levis Pelusi (@yogidan2012) see it here: unsplash.com/photos/vZWIz0HfNr0
Jason Leung (@ninjason) see it here: unsplash.com/photos/V-HPvi4B4G0
Anthony Da Cruz (@akhu) see it here: unsplash.com/photos/m_BHoce9NEk
国庆 渠 (@canalhermi) see it here: unsplash.com/photos/Mv-JR1-74NE
Jaanus Jagomägi (@jaanus) see it here: unsplash.com/photos/0TDa_DdnkX8
Bence Balla-Schottner (@benballaschottner) see it here: unsplash.com/photos/7fOa3LFkMls
Emilia Niedźwiedzka (@silverformymonsters) see it here: unsplash.com/photos/qCmjkEzzoBk
Annie Spratt (@anniespratt) see it here: unsplash.com/photos/L8aHckDOBac
Alejandra Ezquerro (@aer_ez) see it here: unsplash.com/photos/X9dtmMEp5l0
Mitchell Luo (@mitchel3uo) see it here: unsplash.com/photos/BuTCnPWnc3o
Kumiko SHIMIZU (@shimikumi32) see it here: unsplash.com/photos/VawVDAQ-0aw
Toa Heftiba (@heftiba) see it here: unsplash.com/photos/BGh0OeJqt2g
Jr Korpa (@korpa) see it here: unsplash.com/photos/itvYIRWzB6s
Michael Lee (@guoshiwushuang) see it here: unsplash.com/photos/jAoyrpp8lFQ
chuttersnap (@chuttersnap) see it here: unsplash.com/photos/mEhOu6ut6Pk
Rosa Virginia (@rvirgie) see it here: unsplash.com/photos/NKBrkP5R3sI
Jimmy Chang (@photohunter) see it here: unsplash.com/photos/NYaB5j6cvXw
Haidan (@hydngallery) see it here: unsplash.com/photos/2d72lJKTdIs
Aleksandar Ristov (@aleksandarr09) see it here: unsplash.com/photos/VSa9Mt5AtRw

[@Something-_]

I love this for my exercise

[@ButterBabyyy]

I love this thing, I use it as my daily workout timer, it’s so useful