# Interrogation vs Detective Diary

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

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

Interrogation ships an update daily, Detective Diary fortnightly. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Interrogation | Detective Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/interrogation-false-testimony/id6738446333/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Fortnightly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 650 MB | 232 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [HAKJIN LEE](https://appshunter.io/developer/1724771708) | [Junsu Hwang](https://appshunter.io/developer/1745070010) |

## What reviewers say

### Interrogation

[App page](https://appshunter.io/ios/app/interrogation-false-testimony/id6738446333)

Step into the role of an investigator, recording suspect testimonies and using psychological manipulation to uncover the truth or guide them to a desired conclusion. Your choices will forge crucial clues or sow seeds of suspicion.

**Highlights:** Record suspect testimonies, Interrogate suspects cleverly, Manipulate psychology, Uncover the truth, Create crucial clues, Raise new suspicions

**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 Interrogation free?

Interrogation 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 Interrogation or Detective Diary have ads?

Detective Diary shows ads; Interrogation does not.

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

Interrogation ships an update daily, and Detective Diary fortnightly. Most recently, Interrogation was updated on October 3, 2026 and Detective Diary on October 10, 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.*