JustQuietCamera is simple camera app with small shutter sound.
Tap zoom label : Reset zoom scale to 1.0 or Telephoto zoom scale
Tap brightness label : Reset exposure compensation to 0.0
Small shutter sound
50x zoom (in case iPhone 15 Pro Max)
Exposure compensation -5.0 - +5.0 (in case iPhone 15 Pro Max)
Watermark
Display current shutter speed and ISO
Volume shutter