# SQL Bubble Pop vs Entity Relationship Concepts

The clearest difference is in-app purchases: Entity Relationship Concepts at none against SQL Bubble Pop's 7. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SQL Bubble Pop sells 7 in-app purchases, starting at $1.99 per 7 days. Entity Relationship Concepts asks for nothing beyond the download.

## The numbers

| Metric | SQL Bubble Pop | Entity Relationship Concepts |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (6 ratings)](https://appshunter.io/ios/app/sql-bubble-pop-sql-coding-game/id6744767120/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 36 MB | 38 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Baldwin Apps LLC](https://appshunter.io/developer/1789554873) | [AFTW LLC](https://appshunter.io/developer/1886356149) |

## What reviewers say

### SQL Bubble Pop

[App page](https://appshunter.io/ios/app/sql-bubble-pop-sql-coding-game/id6744767120)

Learn SQL through engaging bubble-popping gameplay. Practice writing real SQL queries, master specific topics like JOINs and subqueries, and receive AI-powered feedback and personalized skill assessments. Ideal for students, analysts, and developers looking to enhance their database skills.

**Highlights:** Bubble-popping SQL query building, AI skills assessment and mapping, Targeted skill focus training, Hands-on practice with various SQL commands, AI-powered hints and explanations, Customizable and resetable workspace

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SQL Bubble Pop - SQL Quiz Game | $1.99 | per 7 days |
| SQL Bubble Pop - SQL Quiz Game | $5.99 | per month |
| SQL Bubble Pop - SQL Quiz Game | $34.99 | per year |
| Coffee Tip | $0.99 | one-time |
| Lunch Tip | $2.99 | one-time |
| Dinner Tip | $4.99 | one-time |
| Generous Tip | $9.99 | one-time |


### Entity Relationship Concepts

[App page](https://appshunter.io/ios/app/entity-relationship-concepts/id6773765964)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SQL Bubble Pop free?

SQL Bubble Pop is free to download, with in-app purchases available.

### Is Entity Relationship Concepts free?

Entity Relationship Concepts is free to download, with no in-app purchases.

### Do SQL Bubble Pop or Entity Relationship Concepts have ads?

Neither SQL Bubble Pop nor Entity Relationship Concepts shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*