Comparison

UI Playground vs OpenMark

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

Head to head
About

UI Playground

Design and preview native iOS UI components with customizable options. Export native code to streamline development and share with others. Supports designers, developers, and product owners.

Highlights
  • Explore and customize native UI components
  • Preview live components with screenshots
  • Export native code for development
  • Auto-save and multiple draft support
  • Adheres to Human Interface Guidelines
  • Supports semantic colors and SF Symbols
  • Save to iCloud for cross-device work
Features
Read full description

Craft the best iOS 26 user experience by choosing the appropriate interface components with the right customisation. Explore and customise native UI components to unlock endless possibilities for your app. Take it to the next level, by previewing a live component within the context of your app, simply by adding a screenshot image. Finally, export native code to share with developers streamlining development. FOR DESIGNERS Explore on the device, all the possibilities that each user interface component supports, exactly as it will work in a real app. FOR DEVELOPERS Learn SwiftUI backwards by first interacting with components on iPhone and then reading or applying the code in a real app. FOR PRODUCT OWNERS Convey your ideas faster by designing small interactions within the context of your app, without the commitment of implementation. FEATURES • Auto-save: Automatically save every customisation you make — never loose your work. • Save Multiple Drafts: work on the same component with different customisations. • Human Interface Guidelines: small instructions lead to a proper usage of components that respect HIG. • Design & Developer Docs: get more information about each component on Apple's website. • Semantic Colors: add system colors with a version for light and dark mode. • SF Symbols: add system symbols for an extra level of precision. • Guides: align components within the safe areas or highlight the component. • Grouped Components: advanced components lets you build an entire Settings area. • Save to iCloud: work on multiple devices without loosing the work. By purchasing this app, we will guarantee ongoing support for any OS updates that changes existing or brings new relevant main UI components. If you have any doubts or want to report an issue with the app, please feel free to reach us at support@uiplayground.app . TERMS OF SERVICE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

OpenMark

View and render markdown files with advanced features like Mermaid diagrams and LaTeX math. Supports various themes, code highlighting, and offline access. Ideal for developers and writers working with markdown on iOS devices.

Highlights
  • Mermaid diagram rendering
  • LaTeX math support
  • Code block highlighting
  • GitHub-style alerts
  • Interactive checkboxes
  • Offline functionality
  • Multiple themes
Features
Read full description

OpenMark is a beautiful markdown reader for iPhone and iPad. Open any .md or .mdx file and see it rendered with full typography, Mermaid diagrams, LaTeX math and interactive checkboxes. The perfect companion to OpenMark for Mac — or a standalone reader for anyone who works with markdown. FEATURES • Beautiful rendered view with full markdown support • Mermaid diagrams — flowcharts, sequence, class, Gantt and Kanban rendered inline • Math and LaTeX — KaTeX rendering for equations, subscripts and matrices • Code blocks highlighted in 30+ languages • GitHub-style alerts — NOTE, TIP, IMPORTANT, WARNING and CAUTION callouts • Wiki-style [[links]] between documents • 4 themes — Default, Nord, Solarized Dark and One Dark • Interactive checkboxes — tap to toggle task list items • Find in page — search within your document • Reading time and document info • Export and print — share as PDF, HTML, or send to any app • Adjustable font size • Outline sidebar on iPad — jump to any heading • Opens files from iCloud Drive, Google Drive, Dropbox and Files • Spotlight indexing — find recently opened documents from Search • Home Screen Quick Actions — jump to recent files from the app icon • Dark and light mode, following your system setting • Works completely offline — no internet required DESIGNED FOR iPAD On iPad, an outline sidebar sits alongside your document for quick navigation through long files. Find in page works with ⌘F on an external keyboard. PERFECT FOR • Reading README files and documentation on the go • Reviewing markdown drafts from your Mac • Opening .md files from any cloud service or app Also available on Mac with full editing.

Screenshots

UI Playground4 screens
OpenMark4 screens

Verdict

The call

The clearest difference is price: UI Playground at Free against OpenMark's $9.99. UI Playground also leads on update cadence (monthly vs every 6 months). OpenMark's advantage is in-app purchases (none vs 6) and chart position (#56 vs unranked). On review sentiment, ads 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

UI Playground is free to download; OpenMark costs $9.99 up front. UI Playground sells 6 in-app purchases, starting at $4.99 per 7 days. OpenMark asks for nothing beyond the download.

UpkeepUpdate frequency

UI Playground ships an update monthly, OpenMark every 6 months. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

Scorecard6 real differences · 5 level
UI Playground versus OpenMark: the parameters behind the verdict, then further details
ParameterUI PlaygroundOpenMark
PriceFree — better$9.99
Rating5.0 (3 ratings) — better—
Positive reviews66.7% of reviews71.4% of reviews — better
Number of ratings3 — better—
Update frequencyMonthly — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank—#56 — better
DevicesiPhoneiPhone, iPad, Mac — better
Requires iOS17.0 — better18
Further details — not scored
Size75 MB8 MB
Age rating4+4+
DeveloperEmanuel FernandesRotate, LLC.

Customer experience

UI Playground

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

OpenMark

Written reviews7 reviews
Positive71.4%
Neutral14.3%
Negative14.3%

In-app purchases

6 purchases

UI Playground

Subscriptions5
  • Weekly$4.997 Days
  • Monthly$9.991 Month
  • Biannual3 Days trial$23.996 Months
Show 2 more
  • Yearly$44.991 Year
  • Yearly3 Days trial$49.991 Year
One-time1
  • Lifetime$149.00
None

OpenMark

No in-app purchases

Questions

Is UI Playground free?
UI Playground is free to download, with in-app purchases available.
Is OpenMark free?
OpenMark costs $9.99, with no in-app purchases.
Do UI Playground or OpenMark have ads?
Neither UI Playground nor OpenMark shows ads.
Which is updated more often, UI Playground or OpenMark?
UI Playground ships an update monthly, and OpenMark every 6 months. Most recently, UI Playground was updated on November 4, 2026 and OpenMark on November 5, 2026.

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