Comparison

JSON Designer vs Logseq

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

Logseq

This open-source outliner helps you write, organize, and share your thoughts using local Markdown and Org-mode files. Manage tasks, build a digital garden, and integrate with various services for enhanced productivity.

Highlights
  • Backlinks
  • Knowledge Graph
  • Page and block references
  • Tasks & Todos
  • SRS Cards
  • Zotero integration
  • Audio recorder
Read full description

Logseq is a joyful, open-source outliner that works on top of local plain-text Markdown and Org-mode files. Use it to write, organize and share your thoughts, keep your to-do list, and build your own digital garden. Logseq includes the following features: 1. Backlink 2. Knowledge Graph 3. Page and block references 4. Page and block embeds 5. Tasks & Todos 6. SRS Cards 7. Zotero integration 8. Youtube, Twitter, etc. integration 9. Audio recorder 10. Powerful queries 11. Whiteboards

Screenshots

JSON Designer2 screens
Logseq4 screens

Verdict

The call

The clearest difference is rating: Logseq at 4.4 against JSON Designer's 3.3. Logseq also leads on in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 4 months). JSON Designer's advantage is iOS requirement (11.0 vs 14.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. JSON Designer sells 1 in-app purchase, starting at $1.99 per month. Logseq asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Logseq holds the better App Store score, 4.4 against 3.3. That said, the two scores are not equally well evidenced: Logseq has 252 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 59% of Logseq's.

UpkeepUpdate frequency

JSON Designer ships an update every 4 months, Logseq every 3 weeks. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

Scorecard6 real differences · 4 level
JSON Designer versus Logseq: the parameters behind the verdict, then further details
ParameterJSON DesignerLogseq
PriceFreeFree
Rating3.3 (10 ratings)4.4 (252 ratings) — better
Positive reviews52.0% of reviews58.7% of reviews — better
Number of ratings10252 — better
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better14.0
Further details — not scored
Size10 MB62 MB
Age rating4+4+
DeveloperCribsterLogseq Inc.

Customer experience

JSON Designer

All ratings10 ratings
Positive40.0%
Neutral30.0%
Negative30.0%
Written reviews50 reviews
Positive52.0%
Neutral10.0%
Negative38.0%

Logseq

All ratings252 ratings
Positive83.7%
Neutral6.7%
Negative9.5%
Written reviews184 reviews
Positive58.7%
Neutral14.7%
Negative26.6%

Bugs and requests

JSON Designer

Not enough reviews yet to summarise bugs or requests.

Logseq

Reported bugs

4 issues
  • Sync issues leading to data loss
  • Inconsistent behavior when creating new blocks
  • Cursor jumping issues when editing text
  • Disappearing UI elements on mobile

Requested features

4 requests
  • Add support for other cloud storage options (Dropbox, Google Drive, etc.)
  • Improve mobile UI and UX for better usability
  • Implement plugin support on mobile
  • Optimize performance for older devices

In-app purchases

1 purchases

JSON Designer

Subscriptions1
  • App Backer - Code Generators Access$1.991 Month
None

Logseq

No in-app purchases

Questions

Is JSON Designer free?
JSON Designer is free to download, with in-app purchases available.
Is Logseq free?
Logseq is free to download, with no in-app purchases.
Which has better reviews, JSON Designer or Logseq?
Logseq is rated higher. JSON Designer averages 3.3 out of 5 from 10 ratings, while Logseq averages 4.4 from 252 ratings.
Do JSON Designer or Logseq have ads?
Neither JSON Designer nor Logseq shows ads.
Which is updated more often, JSON Designer or Logseq?
JSON Designer ships an update every 4 months, and Logseq every 3 weeks. Most recently, JSON Designer was updated on October 8, 2026 and Logseq on October 7, 2026.

Other comparisons