# Oto Diary — One Sound, One Day

> One Sound, One Day (iPhone/iPad app by torankirite.)

- Source: https://appshunter.io/ios/app/oto-diary/id6760734574 (this page in markdown: same URL + `.md`)
- Developer: [torankirite](https://appshunter.io/developer/1883564850)
- Category: Lifestyle, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 1 MB
- Languages: American English, Japanese
- Released: 2026-03-21
- Data updated: 2026-09-09
- User reviews in markdown: https://appshunter.io/ios/app/oto-diary/id6760734574/reviews.md

## What is Oto Diary?

■ Description (max 4000 characters)
Oto Diary is a new kind of journal — one made entirely of sound.

You've taken the photo, but somehow the feeling of that moment is gone.
This app captures what photos can't: the air, the ambience, the life.

Record just 10–60 seconds of ambient sound, once a day.
The morning coffee brewing. Your child laughing. Rain against the window.
These are the sounds that make a life — and this app keeps them safe.

--- Cassette Tape UI ---

A nostalgic cassette tape design that feels tactile and alive.
Hold the bottom reel to record. Release to save.
Watch the tape wind as your memories accumulate.

--- Time Capsule ---

One year from today, the sound you recorded will be delivered back to you via notification.
"I forgot my child's voice sounded like that."
Memories fade. Sounds don't.

--- Calendar View ---

Every recording appears as a waveform on the calendar.
Your streak of days becomes a visible record of presence.

--- Perfect for ---

- Parents who want to remember their children's voices
- Pet owners
- Anyone who struggles to keep a journal
- Travelers and adventurers
- Those who cherish everyday moments

--- How It Works ---

1. Open the app
2. Hold the bottom reel (10–60 seconds)
3. Release to save
4. Add a mood and title

That's it. The magic is in showing up every day.

[Free]
- Up to 30 recordings
- Current month calendar
- Time Capsule notifications

[Premium — one-time purchase]
- Unlimited recordings
- Time Capsule playback
- No ads

Start recording your life — one sound at a time.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Sound Diary Premium | $3.99 | one-time |



## Version history (last 3 releases)

### 1.2 — 2026-09-01

Stability improvements and overall performance optimizations.

### 1.1 — 2026-05-05

Minor improvements and performance enhancements.

### 1.0 — 2026-03-21

No release notes.

## Apps similar to Oto Diary

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [クラブオフ（Club Off）](https://appshunter.io/ios/app/club-off/id1273907949) | — | Free | Lifestyle |
| [COOAU Cam](https://appshunter.io/ios/app/cooau-cam/id1546717351) | 4.4 (167) | Free | Lifestyle |
| [わりかん - 記録から精算まで、シンプルな割り勘アプリ](https://appshunter.io/ios/app/id6450874121) | — | Free | Lifestyle |
| [ごほうび。](https://appshunter.io/ios/app/id872292899) | 4.7 (3) | Free | Lifestyle |
| [Murmur - Voice Diary](https://appshunter.io/ios/app/murmur-voice-diary/id1510564828) | 4.4 (81) | Free | Lifestyle |
| [VoiceMemo Daily - Personal Log](https://appshunter.io/ios/app/voicememo-daily-personal-log/id1635848473) | — | Free | Lifestyle |

## More apps by torankirite

- [EyeCare Tracker](https://appshunter.io/ios/app/eyecare-tracker/id6760272190)
- [Marche Sales - QR Register](https://appshunter.io/ios/app/marche-sales-qr-register/id6760284300)
- [HydroRing - Water Tracker](https://appshunter.io/ios/app/hydroring-water-tracker/id6760393366)
- [Potepote - Dog Walk Journal](https://appshunter.io/ios/app/potepote-dog-walk-journal/id6760515197)
- [MediTrack – Medication Tracker](https://appshunter.io/ios/app/meditrack-medication-tracker/id6760528101)
- [ためブタ](https://appshunter.io/ios/app/id6760604349)

All apps by torankirite: https://appshunter.io/developer/1883564850

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*