# Learn GPT 90 Days Course — 90 practical AI lessons

> 90 practical AI lessons (iPhone/iPad app by Gianluigi Grassi.)

- Source: https://appshunter.io/ios/app/learn-gpt-90-days-course/id6803958996 (this page in markdown: same URL + `.md`)
- Developer: [Gianluigi Grassi](https://appshunter.io/developer/1848540385)
- Category: Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 14 MB
- Languages: American English
- Released: 2026-09-17
- Data updated: 2026-09-20

## What is Learn GPT 90 Days Course?

An independent 90-day course for learning GPT-based AI clearly and responsibly. Each of the 90 lessons is split into focused interactive slides with explanations, feature and syntax guidance, worked examples, copyable prompts, hands-on tasks, checks, questions and answers. Personal notes, bookmarks and progress stay on device. No account is required. The first 10 lessons are free. Monthly Access is a one-month auto-renewing subscription that unlocks all 90 lessons and study tools. Lifetime Access is a one-time purchase that permanently unlocks the same content. OpenAI and ChatGPT are discussed only as educational subjects. This independent app is not affiliated with, endorsed by or operated by OpenAI. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly Access | $0.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Access | $8.99 | one-time |


## Is Learn GPT 90 Days Course safe?

Not enough ratings yet to assess Learn GPT 90 Days Course.

## Is Learn GPT 90 Days Course legit?

Learn GPT 90 Days Course appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Learn GPT 90 Days Course is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0.1 — 2026-09-17

No release notes.

## More apps by Gianluigi Grassi

- [FlightTimeApp](https://appshunter.io/ios/app/flighttimeapp/id6756632781)
- [G-R Gabriella Romeo](https://appshunter.io/ios/app/g-r-gabriella-romeo/id6762883328)
- [Learn Kimi 90 Days Course](https://appshunter.io/ios/app/learn-kimi-90-days-course/id6803959104)
- [Learn Claude 90 Days Course](https://appshunter.io/ios/app/learn-claude-90-days-course/id6803959174)

All apps by Gianluigi Grassi: https://appshunter.io/developer/1848540385

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-20.*