# Fermi Practice Drill with AI vs Dopa

The clearest difference is ads: Dopa at none against Fermi Practice Drill with AI's shown. Dopa also leads on update cadence (every 5 days vs every 2 weeks). Fermi Practice Drill with AI's advantage is iOS requirement (16.0 vs 26.5). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Fermi Practice Drill with AI sells 1 in-app purchase, starting at $5.99 per month and Dopa sells 2 in-app purchases, starting at $29.99 per year. Whichever you choose, the download price is not the number that matters.

Fermi Practice Drill with AI ships an update every 2 weeks, Dopa every 5 days. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Fermi Practice Drill with AI | Dopa |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | — | Freemium |
| Size | 21 MB | 50 MB |
| Requires iOS | **16.0** | 26.5 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yuto Inagaki](https://appshunter.io/developer/1733484400) | [akihiro oga](https://appshunter.io/developer/1885282628) |

## What reviewers say

### Fermi Practice Drill with AI

[App page](https://appshunter.io/ios/app/fermi-practice-drill-with-ai/id6748893807)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FerminPro | $5.99 | per month |


### Dopa

[App page](https://appshunter.io/ios/app/dopa-writing-app-blocker/id6806509773)

This app helps you break phone addiction by encouraging you to journal your thoughts and feelings instead of endlessly scrolling. It offers app blocking features and a roadmap to help you reclaim your time and build a healthier relationship with your device.

**Highlights:** Journaling for mental clarity, App blocking to reduce usage, Capture fleeting ideas, Multiple intervention levels, Progress tracking and reflection, Gamified growth with Dopa Persimmon

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Annual (First-time) | $29.99 | per year |
| Pro Annual | $39.99 | per year |


## Frequently asked questions

### Is Fermi Practice Drill with AI free?

Fermi Practice Drill with AI is free to download, with in-app purchases available.

### Is Dopa free?

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

### Do Fermi Practice Drill with AI or Dopa have ads?

Fermi Practice Drill with AI shows ads; Dopa does not.

### Which is updated more often, Fermi Practice Drill with AI or Dopa?

Fermi Practice Drill with AI ships an update every 2 weeks, and Dopa every 5 days. Most recently, Fermi Practice Drill with AI was updated on November 8, 2026 and Dopa on November 6, 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.*