Soundiary
by 磊 辛
- Lifestyle
- Paid
- Small & simple · 97
- Rating
- 0.0
- 0 ratings · US storefront
- Top 94%among 32 Lifestyle apps
- Last update
- Oct 22, 2026
- Version 1.2.1
- Size
- 2 MB
- Category
- Lifestyle
- Tracked since
- Oct 16, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
Your day deserves to be remembered properly.
Soundiary turns a day of sound, heartbeat and body signals into a journal entry written in the quiet of the evening — nothing invented, nothing sentimental.
What matters more: unless you ask for it, your voice is never stored.
By default, Apple Watch samples the sounds around you, turns them into text, speaker labels and emotional features right on the device, then discards the raw audio. No recording files. No playback. Only meaning is kept.
Want to keep some of it? Turn on Save audio and each captured segment is also saved to your iPhone — ready to play, export or delete. The switch ships off, and it stays in your hands.
Through the day it listens quietly: sampled sensing, with silence and noise skipped automatically. It hears you from across the room, too — five levels of voice sensitivity, tuned to wherever you are.
Worried about battery? Power-saving mode samples just 6 seconds every 10 minutes, while body signals keep coming every 5. A whole night won't disturb your sleep.
In the morning, a story that's yours: what you did, who you met, how you felt, and what's still unfinished.
Who was speaking is your call: voices are grouped automatically, and you confirm or correct.
Everything stays on your device: no account, no cloud sync, no third-party SDK. Not even crash logs.
Paid download, complete on arrival: no in-app purchases, no subscriptions, no auto-renewal.
Requires iOS 18+ and Apple Watch Series 6 or later (including SE 2nd gen and Ultra).
What’s new
Release notes for the latest version, as written by the developer.
If the watch app isn't installed yet, the iPhone now tells you where to get it, with a button that opens the Watch app directly.
Before, this case just showed an empty screen — many assumed the app was broken.
Nothing else changed.
Rank history
Daily position in the China charts. #1 is at the top.
- Best rank
- #2
- Current rank
- #4
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
97/100
Small & simple
- Developer size100% · 25
Developer: 1 app on the charts
- Audience size100% · 20
Ratings: 0
- App size100% · 10
Size: 2 MB
- Price model100% · 15
Price model: paid
- Demand proof90% · 30
Best rank #1, 6 countries
An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2
How the score worksVersion history
- 1.2.1LatestReleased Oct 22, 2026
- 1.0Released Oct 15, 2026