Diagram Maker: Flowchart & ERD
Diagram Maker: Flowchart & ERD Summary
Diagram Maker: Flowchart & ERD is a free, ad-supported, with in-app purchases Android app in Tools by CosmoVex. Released in May 2026 (4 months ago). It has about 779+ installs Based on AppGoblin estimates, it reaches roughly 265 monthly active users and generates around $<10K monthly revenue (73% IAP / 27% ads). Store last updated Sep 21, 2026
Recent activity: 202 installs this week (295 over 4 weeks) showing steady growth View trends →
Diagram Maker: Flowchart & ERD SDKs Summary
App not yet scanned for SDKs.
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App Description
Flowcharts & ER diagrams on your phone. No sign-in, no subscription.
Draw a flowchart on your phone in a minute — boxes, arrows and labels — then send it as an image or PDF. No account, and no watermark on your exports.
HOW IT WORKS
• Tap + on any box to add the next step, already connected, and type straight away
• Drag from one shape to another to draw an arrow, or tap the two shapes
• Label lines "Yes" / "No", turn arrow heads on or off, make lines dashed, flip their direction
• Resize from any corner or edge; rotate with the handle, which snaps to 0°, 45° and 90°
• Pinch to zoom and drag to move around an unlimited canvas
• Undo and redo every step
SHAPES FOR REAL FLOWCHARTS
Start/End, process, decision, input/output, database, preparation, sticky notes and free text — the standard symbols your teacher or team expects.
YOUR WORK SAVES ITSELF
Every change is saved automatically, including when you switch apps or your phone locks. Nothing to remember, nothing to lose.
EXPORT AND SHARE
Export PNG, PDF or SVG and share to WhatsApp, email, Drive or your documents. Exports carry no watermark. Your first export is free; Pro unlocks unlimited exports.
ER DIAGRAMS AND MERMAID
Lay out database tables and relationships, or write Mermaid flowchart code and turn it into a diagram you can keep editing by hand.
START FROM A TEMPLATE
Flowchart, ER diagram, org chart and mind map starters, or a blank canvas.
GOOD FOR
• Students — algorithm flowcharts, assignments, revision notes
• Developers — ER diagrams, system flows, Mermaid charts
• Work — process maps, decision trees, approval steps
PRIVATE AND OFFLINE
No sign-in. Your diagrams stay on your device, and drawing and export work without a connection.
FREE TO DRAW, ONE-TIME PRO
Drawing is free and shows ads. The free version keeps up to 5 diagrams and includes one export. A one-time Pro upgrade unlocks unlimited export and unlimited diagrams and removes ads. There is no subscription.
WHAT IT DOES NOT DO
No real-time collaboration and no cloud sync. It does not open files made in desktop diagram programs.