# First Due vs Casi

The clearest difference is in-app purchases: First Due at none against Casi's 3. First Due also leads on iOS requirement (15.0 vs 18.6). Casi's advantage is update cadence (fortnightly vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. Casi sells 3 in-app purchases, starting at $1.99 per 7 days. First Due asks for nothing beyond the download.

First Due ships an update every 9 months, Casi fortnightly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | First Due | Casi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/casi-spanish-practice/id6755602177/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 127 MB | 10 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [First Due Media](https://appshunter.io/developer/1774294482) | [Better Things Better](https://appshunter.io/developer/1854790582) |

## What reviewers say

### First Due

[App page](https://appshunter.io/ios/app/first-due/id6736996809)

**Features:** Vision Pro support

**In-app purchases:** none


### Casi

[App page](https://appshunter.io/ios/app/casi-spanish-practice/id6755602177)

Build confidence speaking Spanish with real-time, natural feedback. Get instant corrections that show you the most authentic way natives would say it. This distraction-free app focuses solely on Spanish for learners of all levels.

**Highlights:** Real-time natural feedback, Instant authentic corrections, Distraction-free design, Practice for all levels, Focus on sounding natural

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Casi – Weekly | $1.99 | per 7 days |
| Casi – Monthly | $4.99 | per month |
| Casi – Yearly | $49.99 | per year |


## Frequently asked questions

### Is First Due free?

First Due is free to download, with no in-app purchases.

### Is Casi free?

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

### Do First Due or Casi have ads?

Neither First Due nor Casi shows ads.

### Which is updated more often, First Due or Casi?

First Due ships an update every 9 months, and Casi fortnightly. Most recently, First Due was updated on October 25, 2026 and Casi on October 24, 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.*