Simple Diary vs Memo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Diary
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Forget the pressure of writing long entries. This app makes journaling simple and fun, letting you quickly jot down a single thought, a quick feeling, or the day's highlight. It's designed to fit seamlessly into your busy life, helping you build a positive habit without the fuss. "What's on your mind today?" "How was that meeting?" "Did something make you smile?" Your one-liners become a personal timeline, a digital scrapbook of your journey. Easily look back at your entries through a clean calendar view or a simple list, and rediscover those small, significant moments that make up your unique story. It's about making mindfulness easy and accessible. If you're looking for a simple way to reflect, track your mood, or just keep a quick record of your days, the "One-Liner Journal" is perfect for you. Start capturing your story, one line at a time!
Memo
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Memo - Quick Notes is a fast, lightweight notepad you can start writing in the moment it opens. No folders, no deep hierarchies. Jot something down, share it, and move on. ■ Add a memo exactly where you want it Spread two fingers apart between two memos and a new memo slides into that spot. Press and hold to reorder, swipe right to pin, swipe left to archive. Organize your list with your fingertips. ■ An editor that gets out of the way - Plain text, headings, and bold - Bulleted, numbered, and checklists - Completed items can move to the bottom automatically (optional) - Return continues a list; an empty line ends it ■ Powerful copy and share - Copy as plain text or with formatting (press and hold to reuse the last format) - Share as text to LINE, Messages, Mail, AirDrop, and more - Share as image: the whole memo rendered as one clean, tall image ■ 20 themes and flexible typography Snow, Linen, Ink, Nocturne, Lagoon, Honey, Ember, Blossom, and more. Choose from San Francisco, Rounded, Serif, or Monospaced, six text sizes, and adjustable line spacing. ■ Feels good to use Subtle sounds and haptic feedback the moment an action lands: checking an item, copying, archiving, adding a memo. Both are kept quiet and can be turned off in Settings. ■ Your list, your way - Group by date (Today, Yesterday, Previous 7 Days, Previous 30 Days…) - Sort by Date Edited, Date Created, Title, or Manual; newest or oldest first - Instant search - Press and hold the app icon to start a new memo right away ■ Your data stays yours - iCloud sync across devices signed in to the same Apple Account - Export and restore JSON backups - Archived memos can be restored at any time - Your memos are never sent to our own servers ■ Remove Ads (one-time purchase) Every feature is free. A single purchase hides the ads shown in Settings. Available in Japanese and English.
Screenshots
Verdict
The clearest difference is update cadence: Memo at daily against Simple Diary's every 3 months. On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
Simple Diary ships an update every 3 months, Memo daily. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.
| Parameter | Simple Diary | Memo |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Daily — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Kana Uchida | Takahiro Kimura |
In-app purchases
Simple Diary
No in-app purchases
Memo
No in-app purchases









