Comparison

Kiwa vs Pipe Flow Calculations

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

Head to head
About

Kiwa

Features
Read full description

Open and view VSD and VSDX files directly on your iPhone, iPad, or Mac. Designed for faithful Visio viewing, the app preserves the layout, styles, and visual details of your diagrams as closely as possible — with no cloud upload required. KEY FEATURES • Local Viewing
 Open VSD and VSDX files directly on your device. No cloud upload required. • Faithful Rendering
 Render diagrams as closely as possible to their original layout, styles, shapes, and visual appearance. • Content Search 
Search page text, Shape Data, hyperlinks, and comments, then quickly jump to matching content. • Layer Control
 Show or hide layers to focus on the content you need. • Shape Details
 View Shape Data, hyperlinks, and comments attached to shapes. • Embedded Files
 View and save files embedded in VSD and VSDX documents. • Annotation Tools
 Add text, shapes, and freehand notes for review, feedback, or ideas. • Multi-Format Export
 Export diagrams to SVG, PDF, PNG, JPG, and other common formats for sharing and archiving. • Built for Apple Devices
 Enjoy a consistent, native experience across iPhone, iPad, and Mac. Note:Premium features require a subscription or a lifetime purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Pipe Flow Calculations

Features
Read full description

Pipe Flow Calculations is a professional engineering app designed for accurate and fast calculation of fluid flow in pipes. It helps engineers, technicians, and students analyze flow behavior, pressure losses, and key fluid parameters in real-world systems. Whether you are designing a pipeline, checking an existing system, or learning fluid mechanics, this app provides reliable results with an intuitive interface. Key Features - Pressure drop calculation - Pipe diameter and flow rate calculations - Flow velocity and Reynolds number - Friction factor and fluid properties - Support for multiple calculation scenarios - Metric and Imperial unit systems - Accurate engineering formulas and methods Designed for Real Engineering Use This app is not a basic calculator. It is built for real engineering workflows: - Analyze pipe systems and optimize performance - Compare different calculation scenarios - Work with realistic fluid properties - Get instant results for quick decision making Useful for Students and Professionals

Screenshots

Kiwa4 screens
Pipe Flow Calculations3 screens

Verdict

The call

The clearest difference is in-app purchases: Pipe Flow Calculations at none against Kiwa's 3. Pipe Flow Calculations also leads on iOS requirement (13.0 vs 18.6). On price, ads and device support 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. Kiwa sells 3 in-app purchases, starting at $2.99 per month. Pipe Flow Calculations asks for nothing beyond the download.

Scorecard2 real differences · 4 level
Kiwa versus Pipe Flow Calculations: the parameters behind the verdict, then further details
ParameterKiwaPipe Flow Calculations
PriceFreeFree
Update frequencyEvery 2 months—
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS18.613.0 — better
Further details — not scored
Size136 MB17 MB
Age rating4+4+
DeveloperShenzhen Seize Times E-Commerce Co., Ltd.Application Services LLC

In-app purchases

3 purchases

Kiwa

Subscriptions2
  • Viewra Visio Pro (1 Month)$2.991 Month
  • Viewra Visio Pro (1 Year)$29.991 Year
One-time1
  • Viewra Visio Pro (Lifetime)$79.99
None

Pipe Flow Calculations

No in-app purchases

Questions

Is Kiwa free?
Kiwa is free to download, with in-app purchases available.
Is Pipe Flow Calculations free?
Pipe Flow Calculations is free to download, with no in-app purchases.
Do Kiwa or Pipe Flow Calculations have ads?
Neither Kiwa nor Pipe Flow Calculations shows ads.

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