Fast Diary vs Sobani
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fast Diary
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Fast Diaryは、シンプルでサクッと日記を書くことができるアプリです。 その日の気分や天気も簡単に記録することができ、一言日記を残していくことができます。 このアプリの特徴 ・シンプルでオシャレ、ミニマルなデザイン ・テーマカラーを気分に合わせて変更できる ・気分や天気をアイコンで記録・確認できる ・日記に写真を設定することができる ・保存した日記を検索できる ・カレンダーで一覧確認できる ・ロック機能(パスコード・生体認証)でロックできる また、今後以下の機能追加を予定しています。 ・iCloudバックアップ機能 ・アルバム機能 ご要望や不明点はお問い合わせ画面からお問い合わせください。
Sobani
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A gentle record-keeping notebook for caring for an aging parent. Caring for an elderly parent often means scattered notes, a bulging medication book, and a stack of hospital receipts. Sobani brings it all into one quiet, dignified place — designed for people in their 40s and 50s who care for a parent. A friendly turtle mascot named Kameji watches over your records, reminding you that you don't have to carry it all alone. KEY FEATURES Hospital Visits Log doctor visits with one tap — clinic, department, symptoms, prescriptions, and the doctor's notes. Attach a photo of the prescription or chart. Schedule the next appointment so it doesn't slip your mind. Visit Prep Checklist Choose from 20 general prompts covering changes, medications, daily life, family sharing, and next steps. Add selected prompts directly to a visit note to reduce forgotten questions. Five prompts are free; Sobani Pro unlocks all 20. Medication Reminders Add medications with multiple daily times. Sobani sends gentle reminders so doses aren't missed. Track end dates for time-limited prescriptions. Vitals Log Record blood pressure, temperature, pulse, weight, plus daily appetite, sleep quality, and bowel status. A simple, comprehensive record you can flip back to any time. 7-Day Care Summary See recent visit, vitals, and diary activity on the home screen, with gentle prompts for what to record next. Caregiver's Diary Write a single sentence about today, attach a photo, and choose a mood (heavy, fair, warm, or glad). It's a gentle space for your own feelings, not just your parent's record. Parent Profile One page for your parent's name, age, conditions, primary doctor, and clinic contact — useful for sharing with a sibling, a care manager, or in an emergency. SOBANI PRO (one-time purchase) All 20 Visit Prep Prompts — Add useful question templates directly to your visit notes before an appointment. PDF Export — Export visits, vitals, diary entries, and photo-backed notes as a clean PDF to share with care managers or doctors. Sobani Pro is a one-time purchase. There are no subscriptions and no auto-renewal — buy it once and it's yours. WHO IT'S FOR - Adults whose elderly parent's care has just begun - Family members worried about missed medications - Siblings who want to share information - Anyone preparing notes for a doctor or care manager - Caregivers who want a space for their own daily feelings Today, you've done enough. ---- - Privacy Policy: https://starcrown.co.jp/privacy - Terms of Service: https://starcrown.co.jp/legal - Support: https://starcrown.co.jp/support - Contact: info@starcrown.co.jp
Screenshots
Verdict
The clearest difference is ads: Sobani at none against Fast Diary's shown. Sobani also leads on update cadence (every 4 days vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Fast Diary sells 1 one-off in-app purchase and Sobani sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Fast Diary ships an update every 3 months, Sobani every 4 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.
| Parameter | Fast Diary | Sobani |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 89 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Haruya Nakamura | Starcrown Inc. |
In-app purchases
Fast Diary
- Ad hiding option$0.99
Sobani
- Sobani Tea Tip$0.99
- Sobani Bento Tip$1.99
- Sobani Pro$3.99
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- Sobani Flowers Tip$5.99









