Report updated May 9, 2026
Doubt (playing card game)
For casual card game players interested in strategy and bluffing mechanics.
Overview · Full Intel report in progress
Doubt (playing card game) is an established card app that is completely free.
What is Doubt (playing card game)?
Current Momentum
v1.0
No release notes available.
Competition
Rivals identification in progress
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What makes this app unique?
What Does It Look Like?
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What Are The Key Features?
Players take turns placing cards face-down in ascending order from A to K.
Players are required to lie and play alternative cards when they do not possess the card required for the current turn.
Opponents can challenge a play by calling 'Doubt,' forcing the player to reveal their card.
The player who loses a doubt challenge must collect all cards currently in play.
How much does it cost?
Who Built It?
HAREPPO
Providing simple, accessible digital versions of classic board, card, and idle clicker games. Focused on delivering lightweight, pick-up-and-play experiences for casual mobile users.
Portfolio
13
Apps
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Analysis in progress, available soon
What do users think recently?
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Analysis in progress, available soon
What is the competitive landscape for Doubt (playing card game)?
How's The Card Market?
Market outlook for this category
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Which niche is Doubt (playing card game) in?
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Every app in this space — 198 tracked, the niche's live rankings, and Marlvel's editorial take on the job-to-be-done.
Strategic analysis coming soon
SWOT, key takeaways & outlook
The outtake for Doubt (playing card game)
Key Takeaways
This is a straightforward digital adaptation of the classic card game Doubt, focusing on bluffing and hand-management mechanics.
Where Is It Heading?
Trend analysis
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