# Learn PostgreSQL Offline vs Learn Data Science

The clearest difference is update cadence: Learn Data Science at fortnightly against Learn PostgreSQL Offline's every 41 months. Learn PostgreSQL Offline's advantage is price ($1.99 vs $3.99) and 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 Data Science $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Learn PostgreSQL Offline ships an update every 41 months, Learn Data Science fortnightly. The most recent releases landed on September 28, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Learn PostgreSQL Offline | Learn Data Science |
| --- | --- | --- |
| Price | **$1.99** | $3.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Fortnightly** |
| Size | 39 MB | 187 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 Data Science

[App page](https://appshunter.io/ios/app/learn-data-science-python/id6757176891)

**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 Data Science free?

Learn Data Science costs $3.99, with no in-app purchases.

### Do Learn PostgreSQL Offline or Learn Data Science have ads?

Neither Learn PostgreSQL Offline nor Learn Data Science shows ads.

### Which is updated more often, Learn PostgreSQL Offline or Learn Data Science?

Learn PostgreSQL Offline ships an update every 41 months, and Learn Data Science fortnightly. Most recently, Learn PostgreSQL Offline was updated on September 28, 2026 and Learn Data Science on September 16, 2026.

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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.*