# Learn PostgreSQL Offline vs Learn System Design & DSA

The clearest difference is price: Learn PostgreSQL Offline at $1.99 against Learn System Design & DSA's $2.99. Learn PostgreSQL Offline also leads on iOS requirement (13.0 vs 17). On ads, in-app purchases and device support there is nothing between them.

Learn PostgreSQL Offline costs $1.99 and Learn System Design & DSA $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Learn PostgreSQL Offline | Learn System Design & DSA |
| --- | --- | --- |
| Price | **$1.99** | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | — |
| Size | 39 MB | 179 MB |
| Requires iOS | **13.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Muhammad Mubeen](https://appshunter.io/developer/1553722821) | [Shahbaz Khan](https://appshunter.io/developer/1479963383) |

## What reviewers say

### Learn PostgreSQL Offline

[App page](https://appshunter.io/ios/app/learn-postgresql-offline/id1624444188)

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

**In-app purchases:** none


### Learn System Design & DSA

[App page](https://appshunter.io/ios/app/learn-system-design-and-dsa/id6798520208)

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

**In-app purchases:** none


## Frequently asked questions

### Is Learn PostgreSQL Offline free?

Learn PostgreSQL Offline costs $1.99, with no in-app purchases.

### Is Learn System Design & DSA free?

Learn System Design & DSA costs $2.99, with no in-app purchases.

### Do Learn PostgreSQL Offline or Learn System Design & DSA have ads?

Neither Learn PostgreSQL Offline nor Learn System Design & DSA 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.*