Comparison

Space DOT vs Folio

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

Head to head
About

Space DOT

Features
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Space DOT 3.0 Features: - Templates for both DOT and Mermaid (Basic templates included. Additional templates can be purchased as in-app purchases.) - Code persistence: Switching between the code editor and the code generator will no longer wipe out your written code. - Layout adjustments: You can now choose for the code editor to appear on the top or bottom (iPhone & iPad), left or right (iPad only), full screen, or to be hidden. - You no longer have to generate code before tapping the render button. You can now simply tap the render button and it will first generate your code automatically. - The code generator tool now features a more compact layout, making it easier to enter information for multiple nodes. - Space DOT now outputs larger image files. Unleash the Power of Graphviz and Mermaid on Your iPhone and iPad. Space DOT version 3 transforms your mobile device into a powerful, professional-grade environment for creating and visualizing directed and undirected graphs using the industry-standard DOT and Mermaid languages. Perfect for engineers, data scientists, architects, and students, Space DOT is the ultimate tool for turning code into clear, elegant diagrams, all powered by an offline, high-performance WebAssembly engine. Offline Code Editor & Real-Time Preview Pure graphing Power: Write or paste your DOT or Mermaid language code in a distraction-free text editor. Instant Visualization: See your graph render in real-time. Hit "Render" to instantly generate high-quality SVG/PNG diagrams. High-Fidelity Rendering: Powered by an embedded, offline rendering engine engine, ensuring professional-grade layouts and accuracy. Interactive & Intelligent Graph Analysis Tap-to-Zoom: Tap any node in the rendered graph to instantly "zoom" into a neighborhood view, highlighting only its immediate neighbors and their connecting edges. This critical feature allows for fast, focused analysis of complex structures without re-rendering the entire graph. Fluid Gestures: Enjoy native iOS support for pinch-to-zoom and pan gestures on the graph preview. Automatic background saving ensures your DOT and Mermaid source files are always up to date. Import/Export: Easily import existing .dot or .gv files from the iOS file system. Share Anywhere: Export your finished graphs as crisp SVG or high-resolution PNG files directly to your preferred sharing service. Reference Dictionaries: Built-in, responsive, searchable libraries of DOT and Mermaid syntax, automatically switching, depending on which graphing language is selected. Code Generator Mode: Switch from the code editor to a user-friendly, form-based interface for DOT. Create nodes, edges, and attributes without writing a single line of code—Space DOT generates the DOT source for you. If you're not familiar with nodes and edges, you can now choose from a selection of templates for a variety of different graphing needs! Write the code. See the system. Whether you're mapping out network topology, sketching a system architecture, or studying algorithms, Space DOT provides the speed, reliability, and features you need to master graph visualization on the go.

About

Folio

Features
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Folio is a local-first library for Markdown and plain text on Mac. Bring notes and docs into one place, organize them with folders and tags, explore connections with Link Map, and write with private on-device assistance—without juggling loose files in the Finder. Library & organization • Import Markdown and text via the file picker, drag-and-drop, or Import from Git Link for public GitHub repositories and individual files. • Needs Organizing gives new imports a clear inbox before you file them. • Folders and nested structures help you group work the way you think. • Tags cut across folders so you can filter by topic or project. • Pinned favorites and Recently Opened put what you need one click away. Explore connections • Link Map visualizes connections between your notes. • Follow links to explore related ideas and navigate your library from a new perspective. Reading & writing • Use Editor, Preview, or Split View to draft and see rendered Markdown side by side. • Use Writing Assistant to refine drafts, improve wording, and turn rough ideas into clearer notes with private on-device help. • Find text within the current document. • Sort notes by title, date added, last opened, and more. • Search across your library from the sidebar. Share & export • Share notes as Markdown or plain text. • Export documents to a folder you choose in Finder. Whether you’re collecting research, drafting READMEs, or building a personal knowledge base, Folio keeps your Markdown connected, organized, searchable, and easy to revisit.

Screenshots

Space DOT4 screens
Folio4 screens

Verdict

The call

The clearest difference is ads: Folio at none against Space DOT's shown. Space DOT's advantage is update cadence (every 9 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement 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. Space DOT sells 6 one-off in-app purchases and Folio sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Space DOT ships an update every 9 days, Folio every 3 weeks. The most recent releases landed on September 10, 2026 and September 11, 2026 respectively.

Scorecard2 real differences · 4 level
Space DOT versus Folio: the parameters behind the verdict, then further details
ParameterSpace DOTFolio
PriceFreeFree
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, Mac
Requires iOS16.2 — better17.0
Further details — not scored
Size16 MB44 MB
Age rating4+4+
DeveloperSpace Japan StudiosDinh Bao Thang Duong

In-app purchases

6 purchases

Space DOT

One-time6
  • Remove Ads$0.99
  • Technology Templates (Space DOT)$1.99
  • Creativity Templates (Space DOT)$1.99
Show 3 more
  • Business Templates (Space DOT)$1.99
  • Duo-Pack$2.99
  • Professional Suite (Space DOT)$2.99
1 purchases

Folio

One-time1
  • Pro Lifetime$9.99

Questions

Is Space DOT free?
Space DOT is free to download, with in-app purchases available.
Is Folio free?
Folio is free to download, with in-app purchases available.
Do Space DOT or Folio have ads?
Space DOT shows ads; Folio does not.
Which is updated more often, Space DOT or Folio?
Space DOT ships an update every 9 days, and Folio every 3 weeks. Most recently, Space DOT was updated on September 10, 2026 and Folio on September 11, 2026.

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