Comparison

MindPen vs K37 Simple Flows

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

Head to head
About

MindPen

Features
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MindPen — Mind Map, Idea Planner & Visual Brainstorming Turn ideas into action with MindPen, a visual mind map and planner that helps you brainstorm, organize, and execute. Build mind trees, add tasks and follow-ups to every branch, and watch your plans come together — all in one beautiful, distraction-free app. Whether you are a student, freelancer, founder, parent, or daily planner — MindPen keeps your thoughts clear and your plans moving. WHAT YOU CAN DO - Visual mind mapping: create unlimited branches, sub-branches, and mind nodes from a single idea. - Brainstorming canvas: a clean, pinch-to-zoom canvas for fast mental mapping and idea capture. - Tasks & follow-ups: turn any branch into actionable to-dos with due dates, reminders, and progress. - Notes per branch: attach long-form mind notes and reference material to any mind node. - Today & Calendar view: see what is due today across every plan in a single dashboard. - Templates: start fast with templates for business, study, personal goals, family events, and more. - Focus mode: hide everything except the branch you are working on. - Color-coded branches: organize visually with custom colors and priorities. - Cloud backup: Google Drive backup keeps your plans safe. - Multi-language: English, Hindi, Arabic, French, German, Spanish, Portuguese, Russian, Turkish, Indonesian. PERFECT AS YOUR - Business planner — product roadmaps, marketing plans, SOPs, OKRs, team initiatives. - Study planner — exam prep, semester goals, thesis chapters, revision schedules. - Marriage planner — weddings, anniversaries, family events, shared milestones. - Goal planner — break long-term goals into yearly, monthly, weekly, daily branches. - Idea planner — capture sparks of inspiration and grow them into full plans. - Project planner — launches, content calendars, freelance work, side projects. - Personal organizer — habits, errands, household, finances, travel. - Student mind mapping — replace messy notes with clean visual mind trees and idea diagrams. - Author & creator planner — outline books, courses, scripts, video series. - Family planner — coordinate chores, schedules, shared notes. WHY MINDPEN - Simple mind map experience without overwhelming menus. - Visual & fast: a visual mind app and idea mapper that feels like real paper. - Works offline: your mind notes are always available, even without internet. - Designed for phones first, beautiful on tablets. - Private by default: your plans stay yours; cloud backup is optional and controlled by you. USE CASES Use MindPen as your daily mind organizer, brainstorming board, flow chart sketchpad, timeline maker, or simple idea diagram tool. From a quick mental mapping session to a full visual planner with tasks, follow-ups, and notes, MindPen scales with your thinking. If you have searched for a simple mind map app, mind node tool, idea mapper, visual mind app, mind notes app, mind tree, mind organizer, flowchart or diagram maker, timeline maker, brainstorming planner, business planner, study planner, marriage planner, goal planner, or idea planner — MindPen brings them together in one focused, modern experience. PRO FEATURES (optional) Upgrade to MindPen Pro to unlock: - Unlimited plans, tasks, and follow-ups - Full color palette for branches - Priority levels for every sub-branch - Premium templates and themes - Priority support Start free with up to 3 plans, then upgrade anytime — monthly, yearly, or one-time lifetime. SUPPORT We read every review. If something is missing or broken, please reach out — we ship updates often. Privacy: https://mobizate.com/mindpen/privacy Terms: https://mobizate.com/mindpen/terms-and-conditions Make your next idea visible — download MindPen and start planning the visual way.

About

K37 Simple Flows

Features
Read full description

Simple Flows is a straightforward, private flowchart maker for planning, explaining, printing, and sharing visual processes. Build a chart from a blank canvas or a practical template, add familiar shapes, connect decisions, and keep everything organized on your device. FEATURES • Create flowcharts from a blank canvas or starter template • Add process, decision, start/end, document, and other familiar shapes • Drag and resize shapes on a flexible canvas • Connect steps with arrows and Yes, No, or custom labels • Edit text, shape type, and color • Duplicate, reorder, and delete chart elements • Export clean PDF or PNG copies • Print in US Letter or A4, portrait or landscape • Save and import editable Simple Flows backup files • Choose from 17 cultural visual themes • Keep flowcharts locally on your device • No account and no subscription Create and fully use three flowcharts for free. A one-time Full Version purchase unlocks unlimited saved flowcharts. All other app features remain included in the free version. No subscription is required. Simple Flows is designed by K37 Software for individuals, families, students, and small teams who want understandable everyday diagrams without enterprise complexity.

Screenshots

MindPen4 screens
K37 Simple Flows1 screens

Verdict

The call

The clearest difference is device support: MindPen at 4 against K37 Simple Flows's 2. MindPen also leads on iOS requirement (13.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. MindPen sells 3 in-app purchases, starting at $4.99 per month and K37 Simple Flows sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences Ā· 4 level
MindPen versus K37 Simple Flows: the parameters behind the verdict, then further details
ParameterMindPenK37 Simple Flows
PriceFreeFree
Update frequencyEvery 6 days—
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size36 MB4 MB
Age rating4+4+
DeveloperMOBIZATEK37 Software LLC

In-app purchases

3 purchases

MindPen

Subscriptions2
  • MindPen Premium Monthly$4.991 Month
  • MindPen Premium Yearly$19.991 Year
One-time1
  • MindPen Premium Lifetime$49.99
1 purchases

K37 Simple Flows

One-time1
  • Simple Flows Full Unlock$2.99

Questions

Is MindPen free?
MindPen is free to download, with in-app purchases available.
Is K37 Simple Flows free?
K37 Simple Flows is free to download, with in-app purchases available.
Do MindPen or K37 Simple Flows have ads?
Neither MindPen nor K37 Simple Flows shows ads.

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