Comparison

DrawViewer vs K37 Simple Flows

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

Head to head
About

DrawViewer

Read full description

This app lets you quickly load and inspect draw.io files on iOS. Whether you are reviewing technical diagrams, system designs, or documentation, the experience stays focused, fast, and easy to navigate. DrawViewr uses diagrams.net-based web rendering in the background to display supported diagram files. Draw​.io is a trademark of its respective owner. ​Draw​Viewr is an independent viewer app and is not affiliated with or endorsed by draw​.io or diagrams​.net, they are so nice to provide the web rendering. Features: • Open draw.io files • Smooth zooming and panning • Multi-page diagram support • Quick file access via the Files app • Clean and minimal interface Perfect for engineers, developers, and anyone working with diagrams on the go.

About

K37 Simple Flows

Features
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Simple Flows is a straightforward, private flowchart maker for planning, explaining, printing, and sharing visual processes. Build a chart from a blank canvas or a practical template, add familiar shapes, connect decisions, and keep everything organized on your device. FEATURES • Create flowcharts from a blank canvas or starter template • Add process, decision, start/end, document, and other familiar shapes • Drag and resize shapes on a flexible canvas • Connect steps with arrows and Yes, No, or custom labels • Edit text, shape type, and color • Duplicate, reorder, and delete chart elements • Export clean PDF or PNG copies • Print in US Letter or A4, portrait or landscape • Save and import editable Simple Flows backup files • Choose from 17 cultural visual themes • Keep flowcharts locally on your device • No account and no subscription Create and fully use three flowcharts for free. A one-time Full Version purchase unlocks unlimited saved flowcharts. All other app features remain included in the free version. No subscription is required. Simple Flows is designed by K37 Software for individuals, families, students, and small teams who want understandable everyday diagrams without enterprise complexity.

Screenshots

DrawViewer4 screens
K37 Simple Flows1 screens

Verdict

The call

The clearest difference is in-app purchases: DrawViewer at none against K37 Simple Flows's 1. On price, ads, 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. K37 Simple Flows sells 1 one-off in-app purchase. DrawViewer asks for nothing beyond the download.

Scorecard1 real difference · 4 level
DrawViewer versus K37 Simple Flows: the parameters behind the verdict, then further details
ParameterDrawViewerK37 Simple Flows
PriceFreeFree
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size0 MB4 MB
Age rating4+4+
DeveloperFlorian SchwaiklK37 Software LLC

In-app purchases

None

DrawViewer

No in-app purchases

1 purchases

K37 Simple Flows

One-time1
  • Simple Flows Full Unlock$2.99

Questions

Is DrawViewer free?
DrawViewer is free to download, with no in-app purchases.
Is K37 Simple Flows free?
K37 Simple Flows is free to download, with in-app purchases available.
Do DrawViewer or K37 Simple Flows have ads?
Neither DrawViewer nor K37 Simple Flows shows ads.

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