# Learn PostgreSQL Offline vs Learning Transformer

The clearest difference is price: Learning Transformer at Free against Learn PostgreSQL Offline's $1.99. Learn PostgreSQL Offline's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 17.0). On ads and device support there is nothing between them.

Learning Transformer is free to download; Learn PostgreSQL Offline costs $1.99 up front. Learning Transformer sells 1 one-off in-app purchase. Learn PostgreSQL Offline asks for nothing beyond the download.

## The numbers

| Metric | Learn PostgreSQL Offline | Learning Transformer |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 41 months | — |
| Size | 39 MB | 1 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Muhammad Mubeen](https://appshunter.io/developer/1553722821) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## 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


### Learning Transformer

[App page](https://appshunter.io/ios/app/learning-transformer/id6802260008)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| the decoder | $3.99 | one-time |


## Frequently asked questions

### Is Learn PostgreSQL Offline free?

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

### Is Learning Transformer free?

Learning Transformer is free to download, with in-app purchases available.

### Do Learn PostgreSQL Offline or Learning Transformer have ads?

Neither Learn PostgreSQL Offline nor Learning Transformer 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.*