# Detective Diary: Whodunit — A Daily Murder Mystery for One > Daily AI mystery game for interrogating suspects and solving cases. (iPhone/iPad app by Junsu Hwang.) - Source: https://appshunter.io/ios/app/detective-diary-whodunit/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: 2026-10-10 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/detective-diary-whodunit/id6760389759/reviews.md ## What is Detective Diary? Interrogate AI suspects and uncover the truth behind each case. A new mystery every day. Detective Diary - A solo murder mystery detective 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 (3 of 3) All indexed reviews: https://appshunter.io/ios/app/detective-diary-whodunit/id6760389759/reviews.md ### 5/5 — 사건이 너무 적어요ㅠㅠ *2026-09-30* 한 번에 몰아서 많이 하고 싶은데 하루에 한 개밖에 못하니까너무 아쉬워요.. 추리게임 좋아하는 사람으로서는 너무 재밌는 것 같아요 ### 5/5 — Top3는 나의것 *2026-09-30* 머더미스터리 같은 추리 게임 좋아하는 사람으로서 시간 남을 때 소소하게 하기 좋음 ### 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 5 releases) ### 1.3.4 — 2026-09-28 ● Rankings got a makeover. : A new Deduction ranking rewards steady, strong play, and the top 3 now stand on a podium. Your own rank is always shown at the bottom of the list. ● Rewards for the Daily top 3. : Finish in the top 3 of yesterday's Daily ranking and you'll receive a Total Score bonus, announced when you open the app. ● Check in every day to earn credits. : Check in and submit cases on This Week's Log to collect credits, plus weekly bonuses. Spend them on extra questions, past cases, and exclusive cases. ● Fixed issues found during play. : We fixed a few bugs for a smoother investigation. ### 1.3.3 — 2026-09-09 ● We'll let you know when a new version is out. : We check for the latest version when you open the app and let you know. If now isn't a good time, just tap "Later" to skip it. ● Fixed issues found during use. : We've resolved a few errors for a smoother investigation. ### 1.3.2 — 2026-09-07 ● You can now solve the case in your own words. : Choose how to explain the culprit's motive — write it out yourself, or pick from keywords. Writing it yourself can earn you up to 10 more points, so it's your shot at a higher detective rank. We'll remember your choice and carry it over to your next case. ● You can now look back at past rankings. : Tap the arrows on the daily ranking to move up to 2 days back and check the standings from those cases. ### 1.3.1 — 2026-08-27 ● Fixed a few small bugs that popped up during play. : We fixed a bug where the keyboard covered the input field on large screens like the Galaxy Z Fold. Your Archive, Ranking, Notices, Library, and Store lists now scroll smoothly no matter how long they get. ### 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. ## Apps similar to Detective Diary | App | Rating | Price | Category | | --- | --- | --- | --- | | [사건파일: 추리게임](https://appshunter.io/ios/app/id6808285655) | — | Free | Games | | [무한 수학 퀴즈](https://appshunter.io/ios/app/id6775210879) | — | Free | Games | | [Daily AI Brain Teaser](https://appshunter.io/ios/app/daily-ai-brain-teaser/id6790510082) | — | Free | Games | | [TriviaRacing: Knowledge Race](https://appshunter.io/ios/app/triviaracing-knowledge-race/id6772630413) | 5.0 (1) | Free | Games | | [Guess That Frame - Movies](https://appshunter.io/ios/app/guess-that-frame-movies/id6787812580) | — | Free | Games | | [QuizOn - Logic & Mystery](https://appshunter.io/ios/app/quizon-logic-and-mystery/id6751866020) | 5.0 (3) | Free | Games | ## Related topics [detective notes](https://appshunter.io/ios/topics/detective-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 2026-10-10.*