# playing cards Doubt — Popular classic card game

> Classic card game of lying, bluffing, and deduction. (iPhone/iPad app by Jun Koizumi.)

- Source: https://appshunter.io/ios/app/playing-cards-doubt/id1545366186 (this page in markdown: same URL + `.md`)
- Developer: [Jun Koizumi](https://appshunter.io/developer/1143108654)
- Category: Games, Entertainment, Card, Family
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 56 MB
- Languages: Japanese
- Released: 2020-12-18
- Data updated: 2026-06-01
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/playing-cards-doubt/id1545366186/reviews.md

## What is playing cards Doubt?

【overview】
It is an application that you can play the card game "Doubt".
Play cards in order of 1, 2, 3, and so on, and compete to eliminate your hand. You can put out 1 to 4 cards face down, but you can lie and include a different card. If you are caught lying, you will be penalized, but if no one points it out, the game will continue.
It is important to lie well and get rid of unnecessary cards, and to detect the lies of your opponent.

Doubt means to doubt in English. As the name suggests, in this game it is important to suspect your opponent and detect lies.

It's a simple game, so anyone can play it, and in Japan, it's a popular standard game that can be played as a party game with family and friends from adults to children.

It is also known as a game that takes a very long time because the discarded cards are returned when you doubt. This app shortens the game by reducing the number of playing cards used and ending the game as a loss even if there are too many cards in hand.

【function】
・There is an easy-to-understand explanation of the rules, so even people who don't know how to play can start.
・A mark is attached to the card with the number to be played.
- You can set the number of cards to use.
- You can set the waiting time for doubts.
・You can see the records such as the number of wins and the number of doubts.

[Operation instructions]
Tap your hand to select it, and press the use button to issue a card. When you take out the card, you will enter the waiting time where you can dodge for a certain period of time.
When your opponent plays a card, you can press the Doubt button to declare a Doubt.

【price】
You can play all for free.

## Key features

- Play the classic 'Doubt' card game
- Lie and bluff to eliminate cards
- Detect opponents' lies
- Adjust game settings (cards, wait time)
- Track game records (wins, doubts)
- Includes rule explanations

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/playing-cards-doubt/id1545366186/reviews.md

### 4/5 — まぁまぁ

*2025-11-09, version 1.2*

おもろいけどボットが全然ダウトって言わん

### 5/5 — シンプルで分かりやすい

*2024-11-23, version 1.2*

おもろいです。でもむかつきます。

## Frequently asked questions about playing cards Doubt

### What is the gameplay of Doubt?

Doubt is a card game where players aim to be the first to discard all their cards. You can play cards in ascending order, but you can also lie about the cards you play. Opponents can 'doubt' your play if they suspect a lie, leading to penalties if they are correct or if they are wrong.

### Can I play Doubt offline?

The provided data does not specify offline play capabilities. However, many card games of this nature can be played offline against AI or with local multiplayer if supported.

### How does Doubt speed up the game?

This app shortens the traditional game by reducing the number of playing cards used and implementing a loss condition if a player has too many cards in hand, preventing excessively long rounds.

### Does Doubt have multiplayer options?

The description focuses on the core gameplay mechanics and does not explicitly mention online or local multiplayer modes. It is described as a game playable with family and friends.

### What are the customizable settings in Doubt?

Players can customize the number of cards used at the start of the game and adjust the waiting time for doubts, allowing for a more tailored gameplay experience.

### Does Doubt have ads?

Yes, this app contains advertisements. It is monetized through ads, as indicated by the 'hasAds' flag being true.

### Is Doubt suitable for children?

Yes, Doubt has an age rating of '4+' and is described as a popular party game suitable for children and adults alike, making it a family-friendly option.

### How often is Doubt updated?

The app was last updated on June 4, 2023, with version 1.2. This indicates a relatively recent update, suggesting ongoing support and potential for future improvements.

## Version history (last 3 releases)

### 1.2 — 2023-06-04

Review request

### 1.1 — 2023-05-29

Update libraries.

### 1.0 — 2020-12-18

No release notes.

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All apps by Jun Koizumi: https://appshunter.io/developer/1143108654

## Related topics

[playing cards doubt](https://appshunter.io/ios/topics/playing-cards-doubt)

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*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 2026-06-01.*