JSON Designer vs myTextViewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JSON Designer
Visually model and design JSON structures with this intuitive tool. Generate code from your models and export diagrams for documentation. Ideal for developers who want to understand and represent APIs more effectively.
- Graphically model JSON structures
- Export JSON models as images
- Reverse-generate models from JSON
- Browse API examples
- Generate Protocol Buffers (.proto)
- Includes tutorial and open-in functionality
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Start modeling - finally! your JSON visualization & design tool If you are new to the app: this app is out for a couple of years now and develpers greatly appreciate it. It is a design tool primarily, and has always been for free as my part of giving back to the developer community. I put some effort in a smoother design and made many adjustments from some valuable feedbacks. Code generators are a separate feature, which is connected to a payment, which is a practical way to show if you value the feature and the app itself. Depending on your feedback the app will be extended with further functionality. Enjoy JSON modeling! tl;dr: Modeling is the core feature and for free as always, code generators have to be paid for (and save lots of time) Despite the long existence of UML and best practices of software engineering you can't find any diagrams in the API documentations of Google, Facebook, Twitter and the likes. So help yourself, stop deciphering unreadable example files and use this new simplified visual representation of JSON structures as object oriented models. Methodology: • Tree structures depict hierarchical structures of objects • Multiplicity indicator of objects and attributes depict arrays Examples and a tutorial are provided inside the App. Use JSON Designer to jump right into defining your API, without reading a single page of JSON documentation. Features: • Graphically model JMs, ie your JSON Models • Export JM images to integrate in documentations • Reverse-generate JMs from URLs or direct JSON input • Browse hand-picked API examples • NEW Generate Protocol Buffers .proto for gRPC • Tutorial • Open-in: exchange JSON files with other apps Stay tuned for new features via @jsondesigner on Twitter. Feedback is gratefully appreciated. More that 65% of JSON Designer users say it's a must-have and are using it daily! Optional code generators for backers (saving you lots of time): Obj-C, Swift, Java, Kotlin, JavaScript, Perl, Python, Ruby, PHP. To back the app, show your gratitude and support further development, simply get the "I'm backing you" app subscription for a couple of month: This subscription brings you access to an extended and growing selection of code generators. It's a recurring monthly subscription, bringing you full access to all code generators for that time. The subscription is allocated as monthly 1.99$ payment. The subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Your account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. The subscription may be managed and auto-renewal may be turned off by going to your Account Settings after purchase. No cancellation of the current subscription is allowed during active subscription period. Any unused portion of a free trial period, if offered, will be forfeited when you purchase the subscription. In regards of subscriptions please review the terms of use and privacy policy on jsondesigner.com/privacyterms
myTextViewer
Instantly open and view any text, code, or log file. This app offers professional syntax highlighting and line numbers, making it ideal for professionals who need to access and read various file formats on the go. It supports numerous common file types and provides customizable viewing themes.
- Open any text, code, or log file
- Syntax highlighting for common formats
- Line numbers display
- Light and dark viewing themes
- Share option integration
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Open any text, code, or log file instantly. myTextViewer provides professional syntax highlighting and line numbers for professionals on the go. Did you recently get an email with a text file that you could not open? Was it because the format of the file doesn't fit any app that you have installed? Search no more - myTextViewer allows you to open any of these files in a text viewer. Simple, fast, easy, as 1 2 3! Just: 1. Click on a file (from the downloads/Files app) or an attachment (from email apps) 2. Using the Share option, select myTextViewer as the target app. 3. View your file Even better - It can color most common files/source code formats (python, c#, yaml, json, and much more!), so even if the default viewer can show you the text, you'll still get much more from opening files with myTextViewer. Also included: ・Light/Dark text viewing themes ・Show/Hide line numbers Enjoy!
Screenshots
Verdict
The clearest difference is in-app purchases: myTextViewer at none against JSON Designer's 1. myTextViewer also leads on rating (3.7 vs 3.3) and ratings volume (157 vs 10). JSON Designer's advantage is update cadence (every 4 months vs every 12 months) and iOS requirement (11.0 vs 15.6). On price, review sentiment, 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
Both are free to download. JSON Designer sells 1 in-app purchase, starting at $1.99 per month. myTextViewer asks for nothing beyond the download.
myTextViewer holds the better App Store score, 3.7 against 3.3. That said, the two scores are not equally well evidenced: myTextViewer has 157 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 52% of JSON Designer's written reviews are positive against 54% of myTextViewer's.
JSON Designer ships an update every 4 months, myTextViewer every 12 months. The most recent releases landed on June 10, 2026 and October 1, 2026 respectively.
| Parameter | JSON Designer | myTextViewer |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (10 ratings) | 3.7 (157 ratings) — better |
| Positive reviews | 52.0% of reviews | 54.0% of reviews — better |
| Number of ratings | 10 | 157 — better |
| Update frequency | Every 4 months — better | Every 12 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 10 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Cribster UG (haftungsbeschrankt) | Yaniv Kalsky |
Customer experience
JSON Designer
myTextViewer
Bugs and requests
JSON Designer
Not enough reviews yet to summarise bugs or requests.
myTextViewer
Reported bugs
8 issues- App fails to open files from Files app
- JSON files display blank
- XML files not rendering properly
- App crashes or won't launch
- Incompatibility with iOS 14 and iOS 16
Show 3 moreShow fewer
- Text files cannot be opened
- Help screen appears instead of file content
- No response when sharing files to app
Requested features
7 requests- Search/find function within documents
- File editing capabilities
- Remove ads or ad-free option
- Support for action extensions
- Better file import options
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- Plain English display instead of code format
- Export functionality
In-app purchases
JSON Designer
- App Backer - Code Generators Access$1.991 Month
myTextViewer
No in-app purchases








