# SQL Programming Guide vs Algo Demo Pro

The clearest difference is price: SQL Programming Guide at Free against Algo Demo Pro's $2.99. SQL Programming Guide also leads on update cadence (every 2 months vs every 4 months). Algo Demo Pro's advantage is iOS requirement (13.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

SQL Programming Guide is free to download; Algo Demo Pro costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SQL Programming Guide ships an update every 2 months, Algo Demo Pro every 4 months. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | SQL Programming Guide | Algo Demo Pro |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 12 MB | 33 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [ALG Software Lab](https://appshunter.io/developer/1650561236) | [zhuo zeng](https://appshunter.io/developer/1435764582) |

## What reviewers say

### SQL Programming Guide

[App page](https://appshunter.io/ios/app/sql-programming-guide/id6739251169)

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

**In-app purchases:** none


### Algo Demo Pro

[App page](https://appshunter.io/ios/app/algo-demo-pro/id6755234930)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SQL Programming Guide free?

SQL Programming Guide is free to download, with no in-app purchases.

### Is Algo Demo Pro free?

Algo Demo Pro costs $2.99, with no in-app purchases.

### Do SQL Programming Guide or Algo Demo Pro have ads?

Neither SQL Programming Guide nor Algo Demo Pro shows ads.

### Which is updated more often, SQL Programming Guide or Algo Demo Pro?

SQL Programming Guide ships an update every 2 months, and Algo Demo Pro every 4 months. Most recently, SQL Programming Guide was updated on November 6, 2026 and Algo Demo Pro on November 5, 2026.

---

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