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MarkChart - Mermaid Editor

by Alexandre Colucci

  • Developer Tools
  • Free
  • Small & simple · 90
View on the App Store
Rating
4.0
14 ratings · US storefront
Top 73%among 178 Developer Tools apps
Last update
Oct 19, 2026
Version 5.1
Size
57 MB
Category
Developer Tools
Tracked since
Oct 9, 2026

Estimated revenue

A model estimate with a likely range, not a reported figure.

$10K/ month

Monthly gross store revenue (USD)

Estimated

Where this falls on the revenue bands

Likely range
$1.5K–88K
$10K–50K
Confidence
Low confidence
Chart day Oct 24, 2026
From Developer Tools grossing #14

Unverified model estimate. Neither Apple nor the developer has published this number, and the real figure can be several times higher or lower. Low confidence: the real figure can be a band higher or lower.

How this estimate is made

Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.

Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.

Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.

Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.

Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.

Full method

Screenshots

As shown on the App Store listing.

About this app

Text from the App Store listing.

Create beautiful Mermaid diagrams at the speed of thought. MarkChart gives you a focused editor, live preview, visual canvas, built-in templates, and polished exports in a native iPhone and iPad app.

Mermaid is a Markdown-inspired syntax for defining diagrams with text. Use MarkChart to create flowcharts, sequence diagrams, state diagrams, class diagrams, entity relationship diagrams, Gantt charts, timelines, mind maps, Venn diagrams, pie charts, requirement diagrams, Git graphs, user journeys, and more.

Start with a template, edit the Mermaid source with syntax highlighting, refine your diagram visually on the interactive canvas, then share it as PDF, PNG, or SVG.

CREATE BEAUTIFUL DIAGRAMS
Turn Mermaid text into polished diagrams in a focused iPhone and iPad app.

EDIT MERMAID DIAGRAMS
Create and edit your Mermaid diagrams directly in MarkChart.

THEMES AND SYNTAX HIGHLIGHTING
Choose polished themes and understand your diagram source with syntax highlighting.

VISUAL EDITING
Edit diagrams visually with the interactive canvas.

TEMPLATES
Instantly create sequence diagrams, state diagrams, flowcharts and more.

DIAGRAM TYPES
Create flowcharts, sequence diagrams, state diagrams, Venn diagrams, mind maps, timelines, Gantt charts, Git graphs, class diagrams, entity relationship diagrams, user journeys, pie charts, Sankey diagrams, XY charts, and more.

QUICK LOOK
Preview your .mmd and .mermaid files right from the Files app.

EXPORT
Easily export your diagrams to PDF, PNG, and SVG formats.

SHORTCUTS
Create automations with the Shortcuts app.

FITS RIGHT AT HOME
MarkChart is optimized for iOS and iPadOS, with Dark Mode support.

MARKCHART PRO
MarkChart Pro is an optional one-time universal purchase for iOS, iPadOS, and macOS.

Privacy Policy: https://markchart.app/privacypolicy/
Terms of use: https://markchart.app/terms/

If you have any questions or ideas, please reach out at [email protected]

What’s new

Release notes for the latest version, as written by the developer.

v5.1
  • Write Mermaid diagrams faster with context-aware text completion
  • Choose when text completion appears: automatically, on demand, or never
  • Added diagram thumbnail previews
  • Ready for iPhone Duo
  • Added syntax highlighting to examples in Help
  • Bug fixes and performance improvements

If you enjoy the app, please consider leaving a rating or review. Your support makes a difference!

Rank history

Daily position in the South Korea charts. #1 is at the top.

Best rank
#11
Current rank
#14
Days charting
2 of 7

On the charts today

Small & simple score

How realistic it is for a small team to build something like this.

90/100

Small & simple

  • Developer size100% · 25

    Developer: 1 app on the charts

  • Audience size100% · 20

    Ratings: 0

  • App size60% · 10

    Size: 57 MB

  • Price model80% · 15

    Price model: free with in-app purchases

  • Demand proof90% · 30

    Best rank #7, 14 countries

An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2

How the score works

Version history

  • 5.1LatestReleased Oct 19, 2026
  • 5.0Released Sep 28, 2026