Comparison

Flowdia Diagrams vs Best Proportion Calc

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

Head to head
About

Flowdia Diagrams

Create professional flowcharts, mind maps, and various other diagrams with an intuitive interface. Easily connect shapes, add elements, and customize your designs. Export your work in multiple formats, including PNG, JPG, PDF, and SVG.

Highlights
  • Create flowcharts, mind maps, BPMN, and network diagrams
  • Intuitive shape connection and element addition
  • Customizable shape appearance
  • Export to PNG, JPG, PDF, and SVG
  • Import custom images
  • Supports various UML diagram types
Features
Read full description

Flowdia is an easy to use flow diagram tool that can be used to quickly create professional quality flowcharts, mind maps, BPMN, network and server layouts, Cisco network, Rack diagram, UML activity, business process and process flow diagrams. The app is designed with ease of use in mind. You can quickly connect flowchart shapes by simply selecting the start and end connection points and quickly add new lanes to a swimlane diagram or new sub-topics to a mind map diagram by using "+" button from the selected swimlane or mind map shape menu. The mind map sub-topics are automatically positioned on the page but can be easily moved as required. Flowdia supports export of the diagram / flowchart to PNG, JPG, PDF and SVG formats.You can view exported SVG files in Microsoft Visio. You can import custom PNG and JPG images. The following diagrams can be created using Flowdia: - Flowchart - Swimlanes - Mind Maps - BPMN - Network Diagram - AWS Architecture Diagram - Cisco Network Diagram - Server Layout Diagram - Rack Diagram - UML Class Diagram - UML Activity Diagram - UML Use Case Diagram - UML Sequence Diagram - Business Process Diagram - Process Flow - Chevron Diagram You can quickly select and change BPMN activity, event and gateway types by using the special shape selector available to all BPMN shapes. The flowchart shapes in this tool are not images can be re-sized without loosing quality. You can customize the look of the shapes by applying background color and also change the font color and size of the text. **NOTE: Free version of Flowdia is restricted to: - 4 files. - 1 page per diagram. - Cannot remove or duplicate pages. - Image and PDF exports with watermark

About

Best Proportion Calc

Easily solve proportion problems with a simple and intuitive interface. This app uses the cross product method for quick and accurate calculations across various fields like finance and science. It's available offline and free to use.

Highlights
  • Intuitive proportion calculation
  • Cross product method for solving equations
  • Versatile for finance, science, and more
  • Offline functionality
  • Free to use
Features
Read full description

Dive into the world of math without the hassle with our super rule of three calculator! Whether you're an intrepid student, a numbers whiz, or just curious, our app is here to make proportion calculations as easy as child's play, thanks to the genius cross product method. Why our calculator is great: Intuitive Calculation: No more headaches! Enter your values, let our calculator do its magic, and voilà, your results are there! Product in Turbo Cross: Goodbye to headaches with complicated equations! Our app uses the cross product method to solve everything from simple equations to crazy puzzles. Versatile: Whether you need to solve problems related to finance, science, or other fields, our app offers exceptional versatility. Offline and Free as Air: Wherever you are, our app follows you. No need for Internet, no limits. Get ready to experience a mathematical adventure like never before. Download our rule of three calculator now and let the math magic happen!

Screenshots

Flowdia Diagrams4 screens
Best Proportion Calc2 screens

Verdict

The call

The clearest difference is review sentiment: Best Proportion Calc at 100% against Flowdia Diagrams's 54%. Best Proportion Calc also leads on rating (5.0 vs 3.4) and in-app purchases (none vs 1). Flowdia Diagrams's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On price, 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. Flowdia Diagrams sells 1 one-off in-app purchase. Best Proportion Calc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Best Proportion Calc holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: Flowdia Diagrams has 67 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 54% of Flowdia Diagrams's written reviews are positive against 100% of Best Proportion Calc's.

UpkeepUpdate frequency

Flowdia Diagrams ships an update every 2 weeks, Best Proportion Calc every 2 months. The most recent releases landed on November 11, 2026 and November 4, 2026 respectively.

Scorecard7 real differences · 3 level
Flowdia Diagrams versus Best Proportion Calc: the parameters behind the verdict, then further details
ParameterFlowdia DiagramsBest Proportion Calc
PriceFreeFree
Rating3.4 (67 ratings)5.0 (5 ratings) — better
Positive reviews54.2% of reviews100.0% of reviews — better
Number of ratings67 — better5
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size24 MB4 MB
Age rating4+4+
DeveloperBehzad GorimarDenis Belmont

Customer experience

Flowdia Diagrams

All ratings66 ratings
Positive57.6%
Neutral10.6%
Negative31.8%
Written reviews142 reviews
Positive54.2%
Neutral14.8%
Negative31.0%

Best Proportion Calc

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Flowdia Diagrams

One-time1
  • Upgrade to Premium$9.99
None

Best Proportion Calc

No in-app purchases

Questions

Is Flowdia Diagrams free?
Flowdia Diagrams is free to download, with in-app purchases available.
Is Best Proportion Calc free?
Best Proportion Calc is free to download, with no in-app purchases.
Which has better reviews, Flowdia Diagrams or Best Proportion Calc?
Best Proportion Calc is rated higher. Flowdia Diagrams averages 3.4 out of 5 from 67 ratings, while Best Proportion Calc averages 5.0 from 5 ratings.
Do Flowdia Diagrams or Best Proportion Calc have ads?
Best Proportion Calc shows ads; Flowdia Diagrams does not.
Which is updated more often, Flowdia Diagrams or Best Proportion Calc?
Flowdia Diagrams ships an update every 2 weeks, and Best Proportion Calc every 2 months. Most recently, Flowdia Diagrams was updated on November 11, 2026 and Best Proportion Calc on November 4, 2026.

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