# Detective Diary — One Case a Day,AI Mystery Game > Daily AI mystery game for interrogating suspects and solving cases. (iPhone/iPad app by Junsu Hwang.) - Source: https://appshunter.io/ios/app/detective-diary/id6760389759 (this page in markdown: same URL + `.md`) - Developer: [Junsu Hwang](https://appshunter.io/developer/1745070010) - Category: Games, Entertainment, Strategy, Trivia - Price: Free with in-app purchases - Age rating: 9+ - Requires: iOS 15.1 · 232 MB - Languages: American English - Released: 2026-05-21 - Data updated: 2026-08-25 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/detective-diary/id6760389759/reviews.md ## What is Detective Diary? Interrogate AI suspects and uncover the truth behind each case. A new mystery every day. Detective Diary - AI Mystery Game You are today’s detective. A new case is assigned to you every day. Interrogate suspects, investigate locations, and analyze evidence. Can you uncover the culprit and their motive? How to Play 1. Review the Case - Check the case details, suspects, and locations 2. Investigate - Question AI suspects and search locations for clues 3. Deduce - Identify the culprit, motive, and method 4. Result - Get your score and rank based on your accuracy Features AI Interrogation - Talk to suspects in real time. Their responses change based on your evidence Daily Cases - A brand-new mystery every day Efficiency Score - Solve cases with fewer questions for higher scores Share Your Case - Share your investigation results with friends Leaderboard - Compete with other detectives Detective Pass Play one case per day for free. Subscribe to Detective Pass to unlock: 3 cases per day Expanded question points Ad-free investigation Think like a real detective. The truth is in your hands. Terms of Use(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - 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 ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Detective Pass | $3.99 | per month | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | 100 credit | $0.49 | one-time | | 330 credit | $1.99 | one-time | | 1500 credit | $6.99 | one-time | | 850 credit | $4.99 | one-time | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/detective-diary/id6760389759/reviews.md ### 5/5 — 그냥 이거 하다보면 시간 훅감 *2026-06-18* 심심해서 깔아봤는데 시간이 너무 금방 지나갔어요.. 몰입도 대박이고 머릿속으로 그림이 막 그려짐 퀄리티가 너무 좋네요 ## Frequently asked questions about Detective Diary ### How many cases can I play with Detective Diary? You can play one case per day for free. Subscribing to Detective Pass unlocks three cases per day, expanded question points, and an ad-free experience. ### Does Detective Diary have ads? Yes, Detective Diary contains advertisements. Subscribers to Detective Pass can enjoy an ad-free investigation experience. ### What devices does Detective Diary support? Detective Diary is available on iPhone, iPad, and iPod devices. ### What is the age rating for Detective Diary? Detective Diary has an age rating of 9+, making it suitable for younger players and adults alike. ### How often is Detective Diary updated? The latest version, 1.2, was released on July 2, 2026, indicating regular updates to the game. ### Can I play Detective Diary offline? The description does not specify offline play capabilities. However, the AI interrogation feature suggests an online connection may be required for real-time suspect responses. ### How does the scoring system work in Detective Diary? You receive a score and rank based on your accuracy in solving cases. Solving cases with fewer questions leads to higher scores, rewarding efficiency. ### Is there a way to compete with other players in Detective Diary? Yes, Detective Diary features a leaderboard where you can compete with other detectives based on your case-solving performance. ## Version history (last 4 releases) ### 1.3 — 2026-08-12 ● You can now submit your final deduction by picking keywords. :After naming the culprit, you no longer have to write out the motive and the method. Just tap to pick 3 motive keywords and 2 method keywords from the ones prepared for each case. ● Not sure? Submit anyway. :Partial credit applies to both the motive and the method. You can even submit with the method keywords left empty. ### 1.2 — 2026-07-02 The design has been updated. You can now enjoy an even more immersive gaming experience! ### 1.1 — 2026-06-17 1. Ads have been enabled for non-subscribers. 2. The demo login service has been removed. ### 1.0 — 2026-05-22 No release notes. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*