Comparison

SQL vs COMath Premium

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

Head to head
About

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.

Highlights
  • 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
Features
Read 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!

About

COMath Premium

Features
Read 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

SQL4 screens
COMath Premium4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

SQL costs $5.99 and COMath Premium $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
SQL versus COMath Premium: the parameters behind the verdict, then further details
ParameterSQLCOMath Premium
Price$5.99$0.99 — better
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 5 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size31 MB85 MB
Age rating4+4+
DeveloperOm Prakash ChapagainJianfeng Wu

In-app purchases

None

SQL

No in-app purchases

None

COMath Premium

No in-app purchases

Questions

Is SQL free?
SQL costs $5.99, with no in-app purchases.
Is COMath Premium free?
COMath Premium costs $0.99, with no in-app purchases.
Do SQL or COMath Premium have ads?
Neither SQL nor COMath Premium shows ads.
Which is updated more often, SQL or COMath Premium?
SQL ships an update every 5 weeks, and COMath Premium every 2 weeks. Most recently, SQL was updated on September 24, 2026 and COMath Premium on October 1, 2026.

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