SQL vs COMath Premium
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SQL
Design, draw, and share entity relationship diagrams with this app. Generate SQL scripts from your diagrams and access study pages for SQL topics and syntax. Perfect for learning SQL graphically and textually.
- Design and draw ER diagrams
- Generate SQL scripts from diagrams
- Customizable canvas size
- Automatic local saving
- Study pages for SQL topics
- Learn SQL syntax pages
Read full descriptionHide full description
The SQLERDiagram is a feature rich app designed by an engineer. The SQLERDiagram is carefully designed to be a simple and elegant app. Easy to use, easy to understand, simple and effective. This app allows the creative smart people like you to design, draw, and share entity relationship diagram. You can also generate a SQL script for the ER diagram and then copy or share the SQL script. Canvas's size can be customized (increase horizontally or vertically) if you need more space to draw ER diagram. It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort will not be lost. This is a perfect app if you are learning SQL. There a Study page to help you with learning some important SQl topics. There is also a LearnSyntax page to help you with learning some important SQl syntaxes. Sharpen you brain by using this app and learning about the SQL using both graphically (diagram) and textually (script). Be creative. Enjoy the app!
COMath Premium
Read full descriptionHide full description
COMath Premium makes it easy to practice math, solve word problems, learn algebra step by step, and enjoy number puzzles such as Sudoku, Calcudoku, and Fillomino. Premium includes full access, no ads, and no privacy tracking. New to COMath? Try the ad-supported COMath first to experience the same core features before choosing Premium.
Screenshots
Verdict
The clearest difference is price: COMath Premium at $0.99 against SQL's $5.99. COMath Premium also leads on update cadence (every 2 weeks vs every 5 weeks). On ads, in-app purchases, 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
SQL costs $5.99 and COMath Premium $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SQL ships an update every 5 weeks, COMath Premium every 2 weeks. The most recent releases landed on September 24, 2026 and October 1, 2026 respectively.
| Parameter | SQL | COMath Premium |
|---|---|---|
| Price | $5.99 | $0.99 — better |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 85 MB |
| Age rating | 4+ | 4+ |
| Developer | Om Prakash Chapagain | Jianfeng Wu |
In-app purchases
SQL
No in-app purchases
COMath Premium
No in-app purchases
Questions
Is SQL free?
Is COMath Premium free?
Do SQL or COMath Premium have ads?
Which is updated more often, SQL or COMath Premium?
Other comparisons











![[Video Learning] 5econdLab [Video Learning] 5econdLab](https://cdn3.appshunter.io/i/Purple211/79b8698caad3990cae69ef5d0ef64a40/AppIcon-1x_U007emarketing-0-11-0-85-220-0.png/512x0w.png)



