What are some alternatives?
When comparing SANDMARC and Zoom In by Hot Wheels, you can also consider the following products
DJI Osmo Mobile - 3-axis gimbal stabilizer for your mobile
Mokacam - World's smallest 4K camera, aka the "GoPro killer"
Shift - Shift is the ultimate email client for managing Mail, Calendar, Drive, Slack, Asana, Jira, Evernote, and all your other favourite apps
Olfi - The essential 4k action camera
Onyx by Titanium - This website provides operating system utilities for macOS
Sony RX0 - Ultra-compact camera with waterproof and shockproof design