The problem with the default click
The standard shutter sound is a convention nobody actively chose. It exists because cameras used to make that noise mechanically. On a phone, it's just a sound file playing at capture time — and nobody designed it for the person being photographed.
When you're trying to photograph a toddler who responds to their name but ignores everything else, that click does nothing. We kept running into this. So Voicame (ボイカメ) was built around a simple premise: record any sound, and that becomes the shutter.
How it actually works
You open the app, record a few seconds of audio, and from that point forward, that recording fires whenever you take a photo or video. The whole flow is on-device — no audio is sent anywhere. Recorded sounds can be exported via AirDrop, so you can hand the same custom shutter to a family member's device.
The shutter integration uses AVCaptureEventInteraction, which sets the iOS 17.2 minimum. The timing is tight enough that the custom sound stays in sync with the capture event.
Shutter volume follows the device's media volume setting. There's no independent volume control for the custom audio — that's a constraint of the iOS API, not a design decision. Worth knowing upfront.
The symmetry side
The second axis of the app is live symmetry: horizontal, vertical, diagonal, quad split, kaleidoscope, and swirl. These preview in real time as you frame the shot. Under the hood it's CoreImage's CIKaleidoscope with Metal keeping the live preview smooth. Video capture goes through AVAssetWriter. Both photos and video work across all six modes.
Where it honestly fits
Kaleidoscope and symmetry camera apps are a crowded category. We're not pretending otherwise. Voicame's bet is that pairing custom shutter audio with symmetry creates a use case that doesn't exist elsewhere — particularly for shooting subjects who respond to sound.
No Android version. No Apple Watch support.
Pricing
Free to download. Full symmetry unlock is a one-time ¥250 in-app purchase.