Comparison

Flow Chart, Block Diagram vs ThinkSpace

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

Head to head
About

Flow Chart, Block Diagram

Easily create complex flowcharts and diagrams on a tablet with an automatic layout algorithm and shape recognition. Design professional business graphics using a variety of smart shapes for different diagram types, then export your creations to multiple formats.

Highlights
  • Automatic layout algorithm
  • Hand-drawn shape recognition
  • Hundreds of pre-designed smart shapes
  • Support for BPMN 1.2 and 2.0
  • Export to PDF, PNG, JPEG, SVG, VDX
  • Dynamic grid
Features
Read full description

Drawing of complicated flowcharts and diagrams on a tablet has never been so easy and quick. Thanks to unique automatic layout algorithm for connections and diagram objects, recognition of the hand-drawn shapes and dynamic grid, there is no need to precisely position shapes on the screen. In just a few minutes you will be able to design professional business graphics using hundreds of pre-designed smart shapes created especially for flowcharts and general-purpose drawings as well as for specific diagram types: Swimlanes, Venn charts, Data flow diagrams, Process flow diagrams, Workflows, Business process models (both bpmn 1.2 and bpmn 2.0 notations are supported); Chevron and circular diagrams; Infographics and many other. The created diagrams can be printed or exported to Pdf, Png, Jpeg, Svg and Microsoft Visio (Vdx).

About

ThinkSpace

This app is a powerful thinking tool that supports creative workflows with an intuitive interface and various thinking methods. It offers features like handwritten notes, unlimited canvases, idea generation frameworks, and real-time collaboration to aid brainstorming and idea structuring.

Highlights
  • Handwritten sticky notes
  • Unlimited canvas sizes
  • Idea generation frameworks
  • Real-time sharing
  • Mind mapping
  • Diagram creation
  • AI brainstorming
Features
Read full description

Too much on your mind, and no idea where to start? AI chats, posts you saw, books you read, things people told you. There is more to think about every day. ThinkSpace is a thinking notebook: put your thoughts on cards, then arrange and connect them as you think. As you move cards around and put ideas into your own words, your understanding deepens. ■ How it works Start with a single card: whatever is on your mind. 1. Collect: AI chats, web pages, photos, passing thoughts, via the Inbox or by pasting. 2. Write it down: turn them, and what is in your head, into handwritten or text cards. 3. Arrange and see the big picture: move, group, and connect cards. Step back, and unexpected connections, next questions, and next actions appear. 4. Explain: say what your cards or map mean, out loud, in your own words. Read the transcript back to check what you really understand. ■ Great for - Clearing your head when AI chats pile up - Making sense of books and videos, and turning them into questions and actions - Connecting ideas from research papers and textbooks so you can explain them in your own words - Creating nursing concept maps and connecting conditions, symptoms, and care - Bringing a story's world, characters, timeline, and ideas into one structure - Journaling: writing out tangled feelings and worries - Designing your career in the AI era, a social media strategy, or a product - Connecting visions and goals to concrete actions and reviews - Working through problems at work: causes, solutions, validation, results ■ Start from a purpose-built map No need to stare at a blank canvas wondering where to begin. - Concept map - Problem-solving map - Pathophysiology map - Career map for the AI era - Worldbuilding map - Social media strategy map - Habit-building map - Product design map - Vision map and more — start from a foundation that fits your topic. ■ Turn AI chats into a growing map Ask AI about a card and add the answers to your map. Break answers into ideas, connect them, and make sense of them in your own words; looking over the map sparks new questions to dig into. Your AI inputs are never used for training. ■ Key features - Infinite canvas: place cards anywhere, half-formed thoughts included. - Handwriting and text: Apple Pencil supported. Jot down ideas on cards and move them around with your finger. - Mind maps, flowcharts, groups, and connections: radial thinking, steps, cause and effect. - Send from AI chats: send a conversation from Claude or the share sheet to the ThinkSpace Inbox, then drag it in as a card. - Explain out loud: describe a card or map in your own words; it is transcribed and saved. You notice where your understanding is thin, and can read it back later. - Ask AI: ask about a card and add the answer as a new card. - Extract key-point cards from long notes and web pages. - AI brainstorming: branch a topic card into angles and questions. - Paste into cards: copied text, photos, or URLs become cards. - Add web pages, images, and screenshots to your canvas. - Search and reuse cards across maps. - Link canvases: big themes and subtopics in layers. - Export to image, PDF, and text. - Local-first: saved on your device, works offline. - Sync across devices (Pro): iPhone, iPad, and Mac. Turn scattered information and AI answers into understanding you can explain and act on. ■ Pro access - Unlimited canvases - Unlimited cards and groups - Expanded AI usage limit - Full feature access ——— Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. The renewal fee is charged to your iTunes account within 24 hours before the period ends. You can turn off auto-renewal anytime in your App Store account settings. ——— Terms of Service: https://thinkspace-public.s3.ap-northeast-1.amazonaws.com/terms-en.html Privacy Policy: https://thinkspace-public.s3.ap-northeast-1.amazonaws.com/privacy-policy-en-v2.html

Screenshots

Flow Chart, Block Diagram4 screens
ThinkSpace4 screens

Verdict

The call

The clearest difference is rating: ThinkSpace at 4.3 against Flow Chart, Block Diagram's 2.8. ThinkSpace also leads on ratings volume (276 vs 11) and review sentiment (54% vs 44%). Flow Chart, Block Diagram's advantage is iOS requirement (12.0 vs 15.6). On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Flow Chart, Block Diagram sells 1 one-off in-app purchase and ThinkSpace sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

ThinkSpace holds the better App Store score, 4.3 against 2.8. That said, the two scores are not equally well evidenced: ThinkSpace has 276 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 44% of Flow Chart, Block Diagram's written reviews are positive against 54% of ThinkSpace's.

UpkeepUpdate frequency

Flow Chart, Block Diagram ships an update monthly, ThinkSpace every 6 weeks. The most recent releases landed on October 14, 2026 and October 19, 2026 respectively.

Scorecard4 real differences · 6 level
Flow Chart, Block Diagram versus ThinkSpace: the parameters behind the verdict, then further details
ParameterFlow Chart, Block DiagramThinkSpace
PriceFreeFree
Rating2.8 (11 ratings)4.3 (276 ratings) — better
Positive reviews44.4% of reviews53.6% of reviews — better
Number of ratings11276 — better
Update frequencyMonthly — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS12.0 — better15.6
Further details — not scored
Size68 MB261 MB
Age rating4+17+
DeveloperEvgeny AkinshinNaoya Enokida

Customer experience

Flow Chart, Block Diagram

All ratings11 ratings
Positive45.5%
Neutral9.1%
Negative45.5%
Written reviews45 reviews
Positive44.4%
Neutral4.4%
Negative51.1%

ThinkSpace

All ratings276 ratings
Positive82.2%
Neutral5.8%
Negative12.0%
Written reviews220 reviews
Positive53.6%
Neutral9.5%
Negative36.8%

Bugs and requests

Flow Chart, Block Diagram

Not enough reviews yet to summarise bugs or requests.

ThinkSpace

Reported bugs

20 issues
  • App crashes on launch or during use
  • Data disappears after upgrading to paid version
  • Canvas fails to load with many items
  • Text boxes become uneditable
  • Grouped items move unexpectedly when resizing
Show 15 more
  • Eraser tool causes crashes
  • Login freezes and network connection errors
  • Registration and account creation failures
  • Undo function doesn't work properly
  • Cards stick or behave erratically
  • Zoom tool tab not displaying
  • Export function unresponsive on Mac
  • Text wrapping and alignment issues
  • Sticky notes change size unexpectedly
  • Items disappear from canvas
  • Forced quit required to close app
  • Laggy performance with Apple Pencil writing
  • Sync failures between iPad and Mac
  • Auto-organize feature snaps items incorrectly
  • White background export issues

Requested features

19 requests
  • One-time purchase option instead of subscription
  • Dark mode theme
  • Better palm rejection for Apple Pencil
  • Folder/project organization system
  • Ability to delete canvases easily
Show 14 more
  • Improved text editing within cards
  • Better arrow/connector customization
  • Undo with multi-finger gestures (like Procreate)
  • Export to vector formats (SVG)
  • Zoom controls for Mac version
  • Better grouping and ungrouping functionality
  • Collaborative editing features
  • iCloud sync option
  • Highlighter tool
  • Custom colors and pen sizes
  • Canvas renaming functionality
  • Better keyboard shortcuts for Mac
  • Chromebook support
  • Auto-layout option for mind maps

In-app purchases

1 purchases

Flow Chart, Block Diagram

One-time1
  • Upgrade to Premium$11.99
2 purchases

ThinkSpace

Subscriptions2
  • ThinkSpace Pro Access$2.991 Month
  • ThinkSpace Pro Access$29.991 Year

Questions

Is Flow Chart, Block Diagram free?
Flow Chart, Block Diagram is free to download, with in-app purchases available.
Is ThinkSpace free?
ThinkSpace is free to download, with in-app purchases available.
Which has better reviews, Flow Chart, Block Diagram or ThinkSpace?
ThinkSpace is rated higher. Flow Chart, Block Diagram averages 2.8 out of 5 from 11 ratings, while ThinkSpace averages 4.3 from 276 ratings.
Do Flow Chart, Block Diagram or ThinkSpace have ads?
Neither Flow Chart, Block Diagram nor ThinkSpace shows ads.
Which is updated more often, Flow Chart, Block Diagram or ThinkSpace?
Flow Chart, Block Diagram ships an update monthly, and ThinkSpace every 6 weeks. Most recently, Flow Chart, Block Diagram was updated on October 14, 2026 and ThinkSpace on October 19, 2026.

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