Simple Diary vs OcthoMind
Price, ratings, monetisation and update history for both apps, side by side โ 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!
OcthoMind
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Organize your thoughts, plan your academic research, or visualize your daily agendas in seconds! OctoMind is a next-generation visual thinking tool that transforms your complex ideas into sleek, structured, and easy-to-manage mind maps. Tailored specifically for academics, students, project managers, and creative professionals. WHY OCTOMIND? โข 100% LOCAL PRIVACY (Offline-First): Your mind maps and personal notes are never uploaded to cloud servers. All your data remains securely stored on your device. โข MULTI-MAP DASHBOARD: Create, rename, and delete unlimited independent maps for different courses or projects, and switch between them instantly. โข COLLABORATIVE NOTES & OUTLINE: Add detailed rich text notes to any node, and check your map structure as a hierarchical tree outline in the side drawer. โข RETINA-QUALITY EXPORTING: Save and share your maps via the native iOS Share Sheet as vector SVG, high-resolution Retina PNG, or print-quality PDF files. โข PREMIUM HAPTIC UI: Experience a fully native iOS look and feel with a beautiful dark mode, smooth canvas animations, and precise tactile haptic feedback. BEST FOR: - Academic lecture notes & research structuring - Project planning & workflow visualization - Brainstorming sessions & conceptual drafting - Meeting agendas & interactive checklists Subscription & Pricing: You can start mapping for free. To unlock unlimited maps and high-res vector PDF, SVG, and PNG exports, you can upgrade to PRO via our Monthly Subscription (comes with a 3- Day Free Trial) or One-Time Lifetime Purchase. Transactions are securely managed via the official Apple StoreKit. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Simple Diary at none against OcthoMind's 2. OcthoMind's advantage is update cadence (fortnightly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. OcthoMind sells 2 one-off in-app purchases. Simple Diary asks for nothing beyond the download.
Simple Diary ships an update every 3 months, OcthoMind fortnightly. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.
| Parameter | Simple Diary | OcthoMind |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Fortnightly โ better |
| Ads | Yes | Yes |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 8 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Kana Uchida | VOLKAN TEZKAN |
In-app purchases
Simple Diary
No in-app purchases
OcthoMind
- Mount$2.99
- alltime$19.99









