PostgreSQL Client vs ER Diagram AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PostgreSQL Client
Access and manage your PostgreSQL databases directly from your iOS device. This app offers a clean interface for exploring, querying, and modifying data, with advanced features like AI-assisted query composition and ER diagrams. It supports secure connections and various data import/export options.
- Secure TLS/SSH connections
- AI-assisted query composition
- ER Diagram Viewer
- Advanced data grid for editing
- Data import/export
- Database object exploration
- Server status monitoring
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DB Compass for PostgreSQL allows you to access your PostgreSQL database directly and without any server setup. You can manage your data with a clean and simple iOS user interface. FEATURES: • Connection over TLS encryption and/or SSH tunnel • Database authentication supported: plain, MD5, SASL (SCRAM-SHA-256 and SCRAM-SHA-256-PLUS) and OAuth (PostgreSQL 18+) • SSH authentication support Secure Enclave Key and U2F/FIDO NFC Key • Assisted table creation and alter structure • Explore, filter, sort, and quick search table data • Query script with A.I. assisted composition and plan analysis • Database objects (tables, views, procedures, etc.) • Database statistics, sessions manager, server status graphs • ER Diagram Viewer • Advanced data grid for browse, edit, conditional formatting • Blob field preview, import and export • Job Activity Monitor • User list and Privileges • Import and Export in multiple formats • iCloud Sync for SQL and JS scripts • SQL plan analysis • Execute queries with Shortcuts App • Charts & Widgets OpenAI, Gemini and Claude integration requires api key and is only available in allowed regions. Ollama and LM Studio integration requires your server to connect. Tested on PostgreSQL 9.5 to 18. -- This is a Premium app and some features may require an in-app lifetime unlock -- For feedback or suggestions contact info@dbcompass.net
ER Diagram AI
Design and visualize database schemas effortlessly with AI assistance. Quickly generate schemas from outlines, make detailed adjustments, and convert diagrams to SQL for various databases. Ideal for new development, reviews, collaboration, and learning.
- AI-assisted schema generation
- Automatic SQL conversion
- Intuitive editing
- Multi-device support via Google Drive
- Export and share diagrams
- Text-based editing with Mermaid notation
- Dark theme support
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Database design is crucial for developing apps and web services. However, designing and visualizing a schema can be time-consuming and complex. With this app, developers can design DB schemas effortlessly. Even with a rough outline, the app can automatically build the schema, and more detailed adjustments can also be made as needed. It is used in various situations such as: - New app development: Creating database schemas for new projects. - Reviewing existing database structures: Visualizing and improving existing DB designs. - Team collaboration: Sharing database designs among team members for efficient collaboration. - Client presentations: Proposing and explaining database designs to clients visually. - Learning: Helping new engineers get familiar with database design. - Quick prototyping: Quickly creating schemas for short-term projects. Please try it out whenever you need to design a database schema. [Features] - Intuitive operability Ease of use is the most important factor. It runs smoothly, and you can intuitively edit your maps. - Automatic SQL Conversion Automatically convert ER diagrams into SQL code. Supported databases include MySQL, PostgreSQL, Oracle, and SQLite. - Ready to use You can use it immediately without registering an account. - Multi-device support It supports cloud storage integration, allowing seamless editing across multiple devices. - Export and Share You can export and share your ER Diagram, and even edit them on a PC. - Import Exported files can be imported and edited. - Text-based editing Edit your ER Diagram directly using Mermaid notation. - Dark theme support Since it supports a dark theme, it is also ideal for use at night.
Screenshots
Verdict
The clearest difference is rating: PostgreSQL Client at 4.6 against ER Diagram AI's 1.0. PostgreSQL Client also leads on ratings volume (153 vs 1) and review sentiment (74% vs 50%). 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
Both are free to download. PostgreSQL Client sells 1 one-off in-app purchase and ER 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.
PostgreSQL Client holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: PostgreSQL Client has 153 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 74% of PostgreSQL Client's written reviews are positive against 50% of ER Diagram AI's.
PostgreSQL Client ships an update every 4 weeks, ER Diagram AI fortnightly. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.
| Parameter | PostgreSQL Client | ER Diagram AI |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (153 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 74.1% of reviews — better | 50.0% of reviews |
| Number of ratings | 153 — better | 1 |
| Update frequency | Every 4 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15.6 — better |
| Further details — not scored | ||
| Size | 124 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | Filippo Maguolo | YUKI TANAIKE |
Customer experience
PostgreSQL Client
ER Diagram AI
Bugs and requests
PostgreSQL Client
Reported bugs
13 issues- Chart creation resets fields
- Connection errors after no changes
- No access to tables/functions
- Connection lost immediately after switching apps
- Reconnecting process hangs up
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- SSH tunnel doesn't work
- Time fields incorrect (fixed, but new bug introduced)
- Cannot add new record with date/time field
- App crashes frequently on large tables
- SASL authentication not working (08P01)
- Free version unstable, crashes often
- Cannot connect to existing database after several months
- Face ID verification spins endlessly
Requested features
17 requests- Add Generate Random button for UUID
- Allow installation on M1/M3 Mac
- Add SSH tunnels with key authentication
- Show HINT in error handling
- Editor of procedure must resize to full screen
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- Calling procedure in background
- Opportunity to show Postgres log
- Debug of procedure
- Add column in index of materialized view
- Change SQL of materialized view
- Call function with SQL: Select func(params...)
- Params of func or procedure did not save
- Cannot edit table with primary key
- Delete multiple records with multi-select
- Set minimum width for grid columns
- Dark mode option
- Ability to install on M1 Mac
ER Diagram AI
Not enough reviews yet to summarise bugs or requests.
In-app purchases
PostgreSQL Client
- PRO FEATURES$9.99
ER Diagram AI
- Simple ER Pro Version (Monthly)$4.991 Month
- Simple ER Pro Version (Annual)$44.991 Year
Questions
Is PostgreSQL Client free?
Is ER Diagram AI free?
Which has better reviews, PostgreSQL Client or ER Diagram AI?
Do PostgreSQL Client or ER Diagram AI have ads?
Which is updated more often, PostgreSQL Client or ER Diagram AI?
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