Soundmark: Sound Collection
此声：声音收集
Soundmark: Sound Collection is #76 in Lifestyle Paid in China and charting in 1 of 16 countries we track.
Developer鹏帆 张
CategoryLifestyle
Price8.00 CNY
Released
Rating★ 0.0 (0)
Version1.0
Age rating4+
First charted🇨🇳 24 Sep 2026
Where it ranks now
Every top chart it appears in across 16 countries.
| Country | Chart | Rank |
|---|---|---|
| 🇨🇳 China | Lifestyle · Paid | #76 |
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Sign inEstimated downloads and revenue, ratings momentum, rank history, recent reviews per country and breakout scores for Soundmark: Sound Collection.
About Soundmark: Sound Collection
A nocturnal field-recording notebook.
Record whatever you can hear right now — rain on a balcony awning, the wind a train pushes out of a tunnel, a convenience-store freezer at two in the morning. Trim the ends off, give it a title and a place, attach a photo if the moment needs one. Then let your iPhone take it apart.
ANALYSED ON THE DEVICE
Every recording is analysed in full the moment you save it: FFT and short-time Fourier transform, on the phone. You get the waveform, the spectrum, a spectrogram, and a Fourier-series view that draws the five strongest components as sine curves — alongside dominant frequency, loudness in RMS dB, spectral centroid, zero-crossing rate and sample rate. No queue, no upload; it finishes just the same in airplane mode.
THREE STEPS INTO THE LIBRARY
• Record — 48 kHz, with the live waveform and the dominant frequency moving with whatever is in front of you. Choose the back, front or bottom microphone; for ambience, the one facing the world is usually the right one.
• Trim — drag the two handles until only the part worth keeping is left. Trimming writes a new file and re-runs the analysis.
• Note — add a title, a place and a description, and attach photos or a video if the moment needs them.
EVERY SOUND GETS ITS OWN COLOUR
The dominant frequency, 60 Hz to 4 kHz, is taken on a log scale and mapped onto hues from amber to violet. The low hum of a freezer runs warm; the fine hiss of a mountain stream runs cold. The colour isn't decoration — it's a reading, and it follows the audio when you re-trim it.
WHILE IT PLAYS
Scrub the waveform with your finger and the spectrum follows the playhead, reading the real STFT column underneath it rather than a decorative shimmer.
NOTHING LEAVES THE PHONE
No accounts, no servers, no analytics, no third-party SDKs, and not a single network request anywhere in the code. Recordings, attachments and the index are written into the app's own Documents directory and synced nowhere. The place is a line of text you type — the app never reads your location. Photos and video arrive through the iOS picker, so Soundmark never gets access to your photo library. Delete a recording and its audio and attachments go with it; delete the app and everything is gone.
FREE
No in-app purchases, no subscription, no ads.
iOS 17 or later. iPhone. Dark by design — it was made for the hours when the world is quiet enough to hear.
Record whatever you can hear right now — rain on a balcony awning, the wind a train pushes out of a tunnel, a convenience-store freezer at two in the morning. Trim the ends off, give it a title and a place, attach a photo if the moment needs one. Then let your iPhone take it apart.
ANALYSED ON THE DEVICE
Every recording is analysed in full the moment you save it: FFT and short-time Fourier transform, on the phone. You get the waveform, the spectrum, a spectrogram, and a Fourier-series view that draws the five strongest components as sine curves — alongside dominant frequency, loudness in RMS dB, spectral centroid, zero-crossing rate and sample rate. No queue, no upload; it finishes just the same in airplane mode.
THREE STEPS INTO THE LIBRARY
• Record — 48 kHz, with the live waveform and the dominant frequency moving with whatever is in front of you. Choose the back, front or bottom microphone; for ambience, the one facing the world is usually the right one.
• Trim — drag the two handles until only the part worth keeping is left. Trimming writes a new file and re-runs the analysis.
• Note — add a title, a place and a description, and attach photos or a video if the moment needs them.
EVERY SOUND GETS ITS OWN COLOUR
The dominant frequency, 60 Hz to 4 kHz, is taken on a log scale and mapped onto hues from amber to violet. The low hum of a freezer runs warm; the fine hiss of a mountain stream runs cold. The colour isn't decoration — it's a reading, and it follows the audio when you re-trim it.
WHILE IT PLAYS
Scrub the waveform with your finger and the spectrum follows the playhead, reading the real STFT column underneath it rather than a decorative shimmer.
NOTHING LEAVES THE PHONE
No accounts, no servers, no analytics, no third-party SDKs, and not a single network request anywhere in the code. Recordings, attachments and the index are written into the app's own Documents directory and synced nowhere. The place is a line of text you type — the app never reads your location. Photos and video arrive through the iOS picker, so Soundmark never gets access to your photo library. Delete a recording and its audio and attachments go with it; delete the app and everything is gone.
FREE
No in-app purchases, no subscription, no ads.
iOS 17 or later. iPhone. Dark by design — it was made for the hours when the world is quiet enough to hear.
Latest updates
1.0