Comparison

System Designer vs Form Extractor

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

Head to head
About

System Designer

Design complex systems using a low-code platform that leverages UML standards. Generate code skeletons and manage components graphically. Run and test your system with dynamic type checking.

Highlights
  • UML-based system modeling
  • Code skeleton generation
  • Graphical component creation
  • MSON format for model definition
  • Dynamic type checking
  • Cross-device synchronization via GitHub
Features
Read full description

System Designer is a low-code development platform for creating systems. No matter the frameworks you use and the code you write, the most important is the model that you define to create your system. System Designer helps you to design this model and to generate the classes and components to build your system. DESIGN YOUR SYSTEM WITH EASE If you look at the different JavaScript frameworks on the market, you will notice that they all have their own way to define a model, generally only with code. System Designer uses UML, a standard, to define your model. So you probably already know how to design in System Designer even if you have never run it. The definition of the model is stored on a JSON format called MSON. With MSON you can define types, classes, one to one / one to many relationships and multi inheritance between classes. CODE THE BEHAVIOR OF YOUR SYSTEM Once you have created your model, System Designer generates the skeletons of all your methods. You only have then to add your code to implement them. System Designer provides you helpers to manage your components. You can easily navigate threw your components to create your application. CREATE COMPONENTS GRAPHICALLY There is no need to code to instantiate a component. Create a component in System Designer is like creating a document in a NoSQL Database. In fact, System Designer acts as an ODM (Object-Document Mapper) to manage your components as NoSQL Documents. RUN YOUR SYSTEM You can run your system directly from System Designer. Because you have defined a model for your application, a Dynamic Type Check is done on every action of your system. All warnings are send and shown in System Designer. DESIGN ON THE GO System Designer can be used on macOS, iPad or any browsers. System Designer has a Github module to synchronize your work between all these apps. You can begin your design on your Mac and then continue it on your iPad.

About

Form Extractor

Scan documents, extract specific data, and build a database. Export your compiled information into multiple formats, including CSV for spreadsheet viewing. This app works offline, prioritizing your data privacy.

Highlights
  • Scan images and extract data
  • Create custom data templates
  • Build a local database
  • Export data in multiple formats (CSV)
  • Offline functionality
  • Data privacy focused
Features
Read full description

Did you ever need to manually type a compilation of data into a spreadsheet? Form Extractor allows you to scan images, extract specific data, build a database and export in multiple formats, including CSV to be viewed as a spreadsheet on compatible office programs. -- Easy to use Just create a template, specify the location and name of each data field and you're ready to scan -- Build your database & export Each time you scan images, captured data is added to a local database that can be easily exported in multiple formats -- Works offline Form Extractor works offline, using your device's capabilities to scan, store and export data without the need of an internet server in respect to your data privacy. Form Extractor is now available for all iOS devices!

Screenshots

System Designer3 screens
Form Extractor3 screens

Verdict

The call

The clearest difference is review sentiment: System Designer at 78% against Form Extractor's 0%. System Designer also leads on rating (4.4 vs 3.8) and in-app purchases (none vs 1). Form Extractor's advantage is update cadence (weekly vs monthly). On price, ratings volume, 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. Form Extractor sells 1 one-off in-app purchase. System Designer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

System Designer holds the better App Store score, 4.4 against 3.8. Both are backed by a comparable volume of ratings — 17 and 12 respectively. Written reviews point the same way: 78% of System Designer's written reviews are positive against 0% of Form Extractor's.

UpkeepUpdate frequency

System Designer ships an update monthly, Form Extractor weekly. The most recent releases landed on September 18, 2026 and September 20, 2026 respectively.

Scorecard5 real differences · 5 level
System Designer versus Form Extractor: the parameters behind the verdict, then further details
ParameterSystem DesignerForm Extractor
PriceFreeFree
Rating4.4 (17 ratings) — better3.8 (12 ratings)
Positive reviews77.8% of reviews — better0.0% of reviews
Number of ratings17 — better12
Update frequencyMonthlyWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.6
Further details — not scored
Size7 MB48 MB
Age rating4+4+
DeveloperErwan CarriouArthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA.

Customer experience

System Designer

All ratings17 ratings
Positive88.2%
Neutral0.0%
Negative11.8%
Written reviews9 reviews
Positive77.8%
Neutral0.0%
Negative22.2%

Form Extractor

All ratings12 ratings
Positive58.3%
Neutral25.0%
Negative16.7%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

System Designer

No in-app purchases

1 purchases

Form Extractor

One-time1
  • Form Extractor Premium$3.99

Questions

Is System Designer free?
System Designer is free to download, with no in-app purchases.
Is Form Extractor free?
Form Extractor is free to download, with in-app purchases available.
Which has better reviews, System Designer or Form Extractor?
System Designer is rated higher. System Designer averages 4.4 out of 5 from 17 ratings, while Form Extractor averages 3.8 from 12 ratings.
Do System Designer or Form Extractor have ads?
Neither System Designer nor Form Extractor shows ads.
Which is updated more often, System Designer or Form Extractor?
System Designer ships an update monthly, and Form Extractor weekly. Most recently, System Designer was updated on September 18, 2026 and Form Extractor on September 20, 2026.

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