# Twifty Quiz vs devdex

Twifty Quiz and devdex are too close to call on the numbers: across 7 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Twifty Quiz sells 3 in-app purchases, starting at $0.99 per month and devdex sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Twifty Quiz ships an update every 2 weeks, devdex every 3 weeks. The most recent releases landed on June 11, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Twifty Quiz | devdex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/devdex/id6478421422/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 11 MB | 41 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aziz Ullah](https://appshunter.io/developer/1704118752) | [Trevor Pennington](https://appshunter.io/developer/1514673614) |

## What reviewers say

### Twifty Quiz

[App page](https://appshunter.io/ios/app/twifty-quiz/id6464455110)

Test your Swift programming knowledge with a fun quiz game. Learn concepts and syntax through detailed explanations for each question. Ideal for aspiring iOS developers and programming enthusiasts.

**Highlights:** Swift syntax and concept questions, Detailed explanations for answers, Suitable for beginners and advanced developers, Learn while playing, iOS app development focus

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan | $0.99 | per month |
| Pro Plan | $1.99 | per 3 months |
| Pro Plan | $4.99 | per 6 months |


### devdex

[App page](https://appshunter.io/ios/app/devdex/id6478421422)

This app helps developers practice coding syntax for JavaScript, TypeScript, and Swift. It offers over 200 questions, tracks your progress with a weekly streak, and provides statistics on accuracy and quantity. Links to official language documentation are also included.

**Highlights:** JavaScript, TypeScript, Swift support, Over 200 practice questions, Weekly streak tracker, Accuracy and quantity statistics, Links to language documentation

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Devdex Monthly | $4.99 | per month |
| Devdex - Yearly | $34.99 | per year |


## Frequently asked questions

### Is Twifty Quiz free?

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

### Is devdex free?

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

### Do Twifty Quiz or devdex have ads?

Neither Twifty Quiz nor devdex shows ads.

### Which is updated more often, Twifty Quiz or devdex?

Twifty Quiz ships an update every 2 weeks, and devdex every 3 weeks. Most recently, Twifty Quiz was updated on June 11, 2026 and devdex on September 19, 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.*