Comparison

System Designer vs koe | 声を、世界のドキュメントに。

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
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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

koe | 声を、世界のドキュメントに。

Features
Read full description

Make multilingual meetings smarter. koe is an AI meeting-notes app that records your audio and automates everything from minutes to multilingual translation. It supports 12 languages including Japanese, English, Vietnamese, Korean, Thai, and Chinese, making it ideal for workplaces with international staff, overseas meetings, and globally expanding teams. Problems koe solves - Writing meeting minutes takes too long - Language barriers in meetings with international staff - Sharing what was said in a recorded meeting is a hassle - Minutes are needed in more than one language - Technical terms get translated inconsistently koe solves all of these at once. Key features Accurate speech-to-text State-of-the-art AI speech recognition delivers accurate transcription even in noisy environments. Speaker separation identifies who said what at a glance. AI-generated minutes From the transcript, koe automatically produces minutes organized into agenda, key points, decisions, and action items. Output is in Markdown, ready to use as a document. Multilingual translation Translate minutes into several languages at once. Share a Japanese meeting as English and Vietnamese minutes, and information flows smoothly across a multinational team. Better quality with glossaries Register industry and in-house terms to improve translation and summary accuracy, and keep wording consistent across your team. Organize meetings in workspaces Group meetings by workspace. Default and target languages are set per workspace, so there is nothing to configure each time. Team sharing and workflow Owner, editor, and viewer permissions are supported. A built-in approval flow for minutes makes koe ready for organizational use. Real-time translation See translations of speech while recording. Even in face-to-face meetings with international staff, everyone follows along as the conversation happens. Schedule management Check your meeting schedule in a calendar. External calendar integration brings in events you manage in other tools. PDF export Export finished minutes as PDF. Distributing internally or sharing with clients takes one tap. Supported languages (12) Japanese, English, Vietnamese, Korean, Thai, Spanish, Chinese, Indonesian, Nepali, Portuguese, Burmese, Sinhala Where koe works best - Manufacturing and service businesses with international staff - International meetings at companies with overseas offices - Startups expanding globally - Remote meetings for multinational teams - Negotiations and discussions through an interpreter - Online meetings with overseas clients Take your multilingual team communication to the next level. Try koe today. ----------------- [Features for business contract customers] Customers with a business contract can use CRM (customer and deal management) and project management inside the app. Meeting minutes and customer and deal information are managed together in one place, and you can track project progress, milestones, and maintenance work logs. Photo text recognition for whiteboards and documents, and an AI assistant that registers tasks when you ask, are also included. * These features require a separate business contract. Please contact us if you are considering adoption. [Getting started] Account registration and use of this app are free. Please contact support if you have any questions. [Terms of Use] https://usekoe.com/terms [Privacy Policy] https://usekoe.com/privacy [Company] HARO Inc.

Screenshots

System Designer3 screens
koe | 声を、世界のドキュメントに。4 screens

Verdict

The call

The clearest difference is in-app purchases: System Designer at none against koe | 声を、世界のドキュメントに。's 2. koe | 声を、世界のドキュメントに。's advantage is update cadence (every 6 days vs monthly). 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. koe | 声を、世界のドキュメントに。 sells 2 in-app purchases, starting at $6.90 per month. System Designer asks for nothing beyond the download.

UpkeepUpdate frequency

System Designer ships an update monthly, koe | 声を、世界のドキュメントに。 every 6 days. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
System Designer versus koe | 声を、世界のドキュメントに。: the parameters behind the verdict, then further details
ParameterSystem Designerkoe | 声を、世界のドキュメントに。
PriceFreeFree
Rating4.4 (17 ratings) — better—
Positive reviews77.8% of reviews—
Number of ratings17 — better—
Update frequencyMonthlyEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size7 MB39 MB
Age rating4+4+
DeveloperErwan Carriou株式会社HARO

In-app purchases

None

System Designer

No in-app purchases

2 purchases

koe | 声を、世界のドキュメントに。

Subscriptions2
  • Starter Plan$6.901 Month
  • Pro Plan$34.901 Month

Questions

Is System Designer free?
System Designer is free to download, with no in-app purchases.
Is koe | 声を、世界のドキュメントに。 free?
koe | 声を、世界のドキュメントに。 is free to download, with in-app purchases available.
Do System Designer or koe | 声を、世界のドキュメントに。 have ads?
Neither System Designer nor koe | 声を、世界のドキュメントに。 shows ads.
Which is updated more often, System Designer or koe | 声を、世界のドキュメントに。?
System Designer ships an update monthly, and koe | 声を、世界のドキュメントに。 every 6 days. Most recently, System Designer was updated on November 2, 2026 and koe | 声を、世界のドキュメントに。 on November 5, 2026.

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