MAMP Viewer vs System Designer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MAMP Viewer
This app allows web developers to preview and test local websites directly on their iOS devices. It offers real-time previews, easy setup, and automatic WLAN transfer for seamless development on the go.
- Real-time website preview
- Easy setup for MAMP sites
- Supports HTML, CSS, JavaScript, PHP
- Automatic WLAN project transfer
- Intuitive user interface
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MAMP Viewer – Your Mobile Companion for Web Development With MAMP Viewer, you can view and test your local websites directly on your iPhone or iPad. Connect the app to MAMP PRO and review your projects on a real iOS device without having to publish them online first. Key Features Preview on Real Devices View your local websites directly on your iPhone or iPad and check how they look and work on iOS. Easy Setup Connect to your MAMP PRO websites in just a few steps. Broad Compatibility Test websites built with HTML, CSS, JavaScript, PHP, WordPress, and other common web technologies. Local Network Access Access your MAMP PRO websites over Wi-Fi, with no cables or uploads required. Easy to Use Switch between your projects using a clean and intuitive interface. MAMP Viewer is the ideal companion for web developers, designers, and users of MAMP PRO 6 or later.
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.
- UML-based system modeling
- Code skeleton generation
- Graphical component creation
- MSON format for model definition
- Dynamic type checking
- Cross-device synchronization via GitHub
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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.
Screenshots
Verdict
The clearest difference is review sentiment: System Designer at 78% against MAMP Viewer's 34%. System Designer also leads on update cadence (monthly vs every 9 months) and rating (4.4 vs 4.0). MAMP Viewer's advantage is ratings volume (232 vs 17). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
System Designer holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: MAMP Viewer has 232 ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 34% of MAMP Viewer's written reviews are positive against 78% of System Designer's.
MAMP Viewer ships an update every 9 months, System Designer monthly. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.
| Parameter | MAMP Viewer | System Designer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (232 ratings) | 4.4 (17 ratings) — better |
| Positive reviews | 33.6% of reviews | 77.8% of reviews — better |
| Number of ratings | 232 — better | 17 |
| Update frequency | Every 9 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 5 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | MAMP GmbH | Erwan Carriou |
Customer experience
MAMP Viewer
System Designer
Bugs and requests
MAMP Viewer
Reported bugs
34 issues- No MAMP Pro hosts found
- Error loading page: Mamp viewer is not able to load the requested page
- CSS files aggressively cached, no way to turn off or empty
- All resolution options grayed out in MAMP Pro General tab
- App has stopped working
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- Won't find hosts even with viewer enabled and on same network
- iOS viewer has never worked
- Upgrade to version 6 disables localhost on mobile
- Locally hosted site fails to load, error text truncated
- Page will not reload if iPad goes to sleep, requires restart
- Not working on custom hosts running Wordpress sites on Nginx
- Cannot change address in address bar manually
- Too many redirects error with WordPress
- Stuck in a redirect loop with WP sites
- Errors trying to load anything, won't let you enter a URL
- Hardly ever works
- Doesn't list hosts
- Cannot access free MAMP site
- Input shows up but won't type or delete anything
- All hosts failed
- Cannot load pages, error message with no explanation
- Menu scrolls to tags causing crash
- Fails to load, error message with no explanation
- Picks up host but fails to load
- Works well for one host, fails for multiple instances
- Doesn't work with any site, they appear but never load
- Only allows access to root page, cannot access subpages
- Incompatible with MAMP's self-signed SSL certificates
- Won't allow viewing anything with a self-signed certificate
- Doesn't support self-signed certificates
- Dynamic PHP sites show plain, unstyled with no images
- Help icon goes to MAMP downloads page
- 'Help' section contains placeholder text
- No hosts show in the app
Requested features
12 requests- Update user interface
- Add URL bar for manual entry
- Improve WordPress support
- Fix SSL certificate issues
- Add tutorial video for setup
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- Allow access to subpages
- Improve MAMP Pro integration
- Add admin section for settings
- Provide iPhone X support
- Enable manual URL entry
- Fix caching issues
- Allow viewing of multiple instances
System Designer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
MAMP Viewer
No in-app purchases
System Designer
No in-app purchases
Questions
Is MAMP Viewer free?
Is System Designer free?
Which has better reviews, MAMP Viewer or System Designer?
Do MAMP Viewer or System Designer have ads?
Which is updated more often, MAMP Viewer or System Designer?
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