Best apps like Cacophony Sidekick

5+ similar apps compared and reviewed

2.9 avg rating
5 free apps
Updated September 2026

Whether you want more options like Cacophony Sidekick or a completely different take on the same concept, our curated list of 5+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.

Top Alternatives to Cacophony Sidekick

3.1๐Ÿ˜ž(123 ratings)
FreeIn-App Purchases
HDMI Monitor - Video Capture screenshot 1
HDMI Monitor - Video Capture screenshot 2
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Transform your device into a full-screen wired video monitor. Stream video and audio directly from HDMI sources using a capture card, perfect for gaming consoles, cameras, or computers when a traditional screen isn't available.

What We Love

  • โœ… Works as advertised when properly configured
  • ๐ŸŽฎ Enables using devices as external monitors
  • ๐Ÿš€ Fast and smooth performance
  • ๐Ÿ”Œ Plug and play functionality
  • ๐Ÿ’ฐ One-time purchase option available (Mac)
  • ๐Ÿ“ฑ Supports multiple display resolutions
  • ๐Ÿ‘ Good customer support responsiveness

Room to Improve

  • ๐Ÿ”Š Audio issues are widespread and persistent
  • ๐Ÿ’ธ Aggressive monetization with weekly subscriptions
  • โŒ Doesn't work reliably across devices
  • ๐Ÿ–ฅ๏ธ Incompatible with many Mac models
  • โšซ Black screen display problems
  • ๐ŸŽฏ No settings or configuration options
  • ๐Ÿ“ต Intrusive upgrade prompts interrupt usage
  • ๐Ÿ†“ Free version severely limited with constant ads
  • ๐Ÿ“š Lack of documentation and user guidance
  • ๐ŸŽฌ High latency issues for gaming
  • ๐Ÿ”„ Requires system-level audio configuration workaround
CO2 sensor#2

CO2 sensor by sighmon

Display SCD-41 CO2 readings.
Strong Contender
๐Ÿ”ง Utilities
2.7(3 ratings)
Free
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Monitor CO2, temperature, and humidity levels in real-time using a Bluetooth sensor. Save readings with location data and sync them across Apple devices via iCloud. View historical data on a map.