# Quizzi vs Detective Diary

The clearest difference is in-app purchases: Quizzi at none against Detective Diary's 5. Quizzi also leads on ads (none vs shown) and update cadence (daily vs fortnightly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Detective Diary sells 5 in-app purchases, starting at $3.99 per month. Quizzi asks for nothing beyond the download.

Quizzi ships an update daily, Detective Diary fortnightly. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Quizzi | Detective Diary |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 85.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 39 MB | 233 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Pawat Supaongprapa](https://appshunter.io/developer/1877629126) | [Junsu Hwang](https://appshunter.io/developer/1745070010) |

## What reviewers say

### Quizzi

[App page](https://appshunter.io/ios/app/quizzi/id6759467828)

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

**In-app purchases:** none


### Detective Diary

[App page](https://appshunter.io/ios/app/detective-diary-whodunit/id6760389759)

Engage in daily AI-powered mystery games where you interrogate suspects, investigate locations, and analyze evidence to solve new cases. Compete for high scores and climb leaderboards by thinking like a real detective.

**Highlights:** AI interrogation of suspects, New mystery case daily, Investigate locations and evidence, Deduce culprit, motive, and method, Efficiency scoring and leaderboards, Share case results with friends

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Detective Pass | $3.99 | per month |
| 100 credit | $0.49 | one-time |
| 330 credit | $1.99 | one-time |
| 850 credit | $4.99 | one-time |
| 1500 credit | $6.99 | one-time |


## Frequently asked questions

### Is Quizzi free?

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

### Is Detective Diary free?

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

### Do Quizzi or Detective Diary have ads?

Detective Diary shows ads; Quizzi does not.

### Which is updated more often, Quizzi or Detective Diary?

Quizzi ships an update daily, and Detective Diary fortnightly. Most recently, Quizzi was updated on November 5, 2026 and Detective Diary on November 9, 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.*