Comparison

App大学 (旧Flutter大学) vs Simple Sequence Diagram AI

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

Head to head
About

App大学 (旧Flutter大学)

This app offers a specialized learning community for mobile app development. It provides various learning plans and community features to help users master app creation.

Highlights
  • Mobile app development focus
  • Learning community
  • Specialized learning plans
  • Community features
Features
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スマホアプリ開発に特化した学習コミュニティ「App大学」の公式アプリです! ライセンス同意書 https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Simple Sequence Diagram AI

Features
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This app allows you to easily create sequence diagrams. Simply describe what you want to visualize, and the latest AI technology will automatically generate a sequence diagram for you. Visualizing information with sequence diagrams is useful for organizing complex processes and interactions. It helps stakeholders understand how systems and processes work, making sequence diagrams valuable in a wide range of situations. However, creating them manually can take time. With this app, you can create sequence diagrams quickly and efficiently. Even if you only provide a rough description of the sequence you want to create, the app can generate a diagram for you. You can also provide more detailed instructions and make adjustments as needed. It can be used in various situations such as: - Visualizing API communication flows in software development - Managing flows from user registration and authentication to service usage - Organizing data transmission and response processes in web services - Managing and visualizing customer support inquiry flows - Designing email and notification system workflows - Visualizing interactions between microservices - Organizing complex approval workflows in business processes - Visualizing user interaction flows in e-commerce systems - Visualizing the process from ordering to delivery in supply chains Please try it whenever you need to create a sequence diagram. [Features] - Intuitive operation Ease of use is important. The app runs smoothly and allows you to edit sequence diagrams intuitively. - Ready to use You can start using the app immediately without creating an account. - Cloud storage support Use cloud storage to save and edit your sequence diagram data across multiple devices. - Export and Share Export and share your sequence diagrams, or use the exported data in other environments. - Import Import exported sequence diagram files and continue editing them. - Text-based editing Edit your sequence diagrams directly using Mermaid notation. - Dark theme support The app supports a dark theme, making it comfortable to use even in low-light environments.

Screenshots

App大学 (旧Flutter大学)4 screens
Simple Sequence Diagram AI4 screens

Verdict

The call

The clearest difference is chart position: Simple Sequence Diagram AI at #200 against App大学 (旧Flutter大学)'s unranked. On price, update cadence, ads and in-app purchases 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. App大学 (旧Flutter大学) sells 5 in-app purchases, starting at $19.99 per month and Simple Sequence Diagram AI sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 16, 2026 and October 12, 2026 respectively.

Scorecard1 real difference · 8 level
App大学 (旧Flutter大学) versus Simple Sequence Diagram AI: the parameters behind the verdict, then further details
ParameterApp大学 (旧Flutter大学)Simple Sequence Diagram AI
PriceFreeFree
Positive reviews33.3% of reviews—
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
Best chart rank—#200 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size124 MB55 MB
Age rating4+4+
DeveloperKBOY, LLC.YUKI TANAIKE

In-app purchases

5 purchases

App大学 (旧Flutter大学)

Subscriptions5
  • コミュニティプラン$19.991 Month
  • 課題学習プラン$39.991 Month
  • AI修行プラン$69.991 Month
Show 2 more
  • ライト修行プラン$79.991 Month
  • Flutter修行プラン$99.991 Month
2 purchases

Simple Sequence Diagram AI

Subscriptions2
  • Simple Sequence Flow Pro (Monthly)$4.991 Month
  • Simple Sequence Flow Pro (Annual)$44.991 Year

Questions

Is App大学 (旧Flutter大学) free?
App大学 (旧Flutter大学) is free to download, with in-app purchases available.
Is Simple Sequence Diagram AI free?
Simple Sequence Diagram AI is free to download, with in-app purchases available.
Do App大学 (旧Flutter大学) or Simple Sequence Diagram AI have ads?
Neither App大学 (旧Flutter大学) nor Simple Sequence Diagram AI shows ads.
Which is updated more often, App大学 (旧Flutter大学) or Simple Sequence Diagram AI?
App大学 (旧Flutter大学) ships an update every 2 weeks, and Simple Sequence Diagram AI every 2 weeks. Most recently, App大学 (旧Flutter大学) was updated on October 16, 2026 and Simple Sequence Diagram AI on October 12, 2026.

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