Comparison

Simple Diary vs OcthoMind

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Simple Diary

Features
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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!

About

OcthoMind

Features
Read full description

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? โ€ข 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. โ€ข MULTI-MAP DASHBOARD: Create, rename, and delete unlimited independent maps for different courses or projects, and switch between them instantly. โ€ข 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. โ€ข 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. โ€ข 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

Simple Diary2 screens
OcthoMind4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. OcthoMind sells 2 one-off in-app purchases. Simple Diary asks for nothing beyond the download.

UpkeepUpdate frequency

Simple Diary ships an update every 3 months, OcthoMind fortnightly. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard2 real differences ยท 4 level
Simple Diary versus OcthoMind: the parameters behind the verdict, then further details
ParameterSimple DiaryOcthoMind
PriceFreeFree
Update frequencyEvery 3 monthsFortnightly โ€” better
AdsYesYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 โ€” better17.0
Further details โ€” not scored
Size8 MB12 MB
Age rating4+4+
DeveloperKana UchidaVOLKAN TEZKAN

In-app purchases

None

Simple Diary

No in-app purchases

2 purchases

OcthoMind

One-time2
  • Mount$2.99
  • alltime$19.99

Questions

Is Simple Diary free?
Simple Diary is free to download, with no in-app purchases.
Is OcthoMind free?
OcthoMind is free to download, with in-app purchases available.
Do Simple Diary or OcthoMind have ads?
Both Simple Diary and OcthoMind show ads.
Which is updated more often, Simple Diary or OcthoMind?
Simple Diary ships an update every 3 months, and OcthoMind fortnightly. Most recently, Simple Diary was updated on October 30, 2026 and OcthoMind on October 25, 2026.

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