Chessis - Chess analysis & improvement

ChessIs is a comprehensive Chess Analysis application designed to help you

✔️ Examine your games and receive detailed game reports

✔️ Evaluate chess positions using the Stockfish Engine

✔️ Identify Blunders, Mistakes, Missed Wins, Optimal Moves, and more

✔️ Compete against the Computer tailored to your skill level

✔️ Arrange Board Positions using the Board Editor for analysis

✔️ Open and view Pgn files through the PGN Viewer

✔️ Receive alerts for blunders along with explanations

✔️ Incorporate multiple engine lines

✔️ Explore different engine lines

✔️ Personalize board colors and pieces

✔️ Analyze your chess games played on platforms like chess.com or Lichess

✔️ Export Annotated Pgn files for your records

✔️ Modify the "Game Report Depth"

✔️ Enjoy Chess960 (FreeStyle Chess) variations

✔️ Access a database of games, searchable via FEN

✔️ Integrate Oex engines into your analysis

✔️ Adjust engine settings such as hash value and thread count

✔️ Browse a list of all chess openings for exploration

✔️ Play chess with a timer or define engine thinking time

✔️ Get the average CPL in game reports

✔️ Analyze games based on time or depth metrics

✔️ Display Threats on the board

✔️ Track Accuracy percentage

✔️ Visualize Threats

✔️ Draw Arrows to indicate moves on the board

ChessIs ranks among the top Chess Analyzer tools available. It aids in enhancing your chess skills by analyzing your games and generating reports that highlight Blunders, Missed Wins, Optimal Moves, and more. Besides pointing out where you went wrong, it also explains why those decisions were mistakes.

We provide a Pro version of the app to support its development, offering additional perks.

While many features are available for free, the Pro version grants you extra advantages:

✔️ Play/Show "Why Blunder" Lines

✔️ Access Engine Lines

✔️ Activate NNUE functionality

✔️ Add unlimited engine lines

✔️ Customize "Game Report Depth"

✔️ Tailor "Game Report Time"

✔️ Perform Deep Analysis

✔️ View the strength of each move while playing

✔️ Receive alerts for mistakes during gameplay

✔️ Experience an ad-free environment

✔️ Analyze an unlimited number of games indefinitely!

✔️ Important Features

How to pay for Chessis Pro?

Currenlty the only payment method available is Google Play billing as the app is only available on Google Play and It is not allowed to add any other payment except Google Play billing.

What if I buy a new android phone or accidently clear app data?

No Worries! Your purchase is linked with your Google account, so your purchase will be automatically restored when you install the ChessIs app on a new phone, please make sure that you use the same Google Play account which you used to purchase ChessIs Pro while installing the app.

Note: Deep analysis yields significantly more precise and reliable results compared to quick analysis.

So let's dive into Chess analysis with the ChessIs application!!!

Look forward to numerous enhancements and new functionalities in the future!

Here’s an immersive review capturing the transformative experience of using ChessIs for deep game analysis:

From Frustration to Mastery: How ChessIs Transformed My Post-Game Ritual into Growth

ChessIs isn’t just another analysis tool—it’s a forensic lab for dissecting your chess soul, revealing hidden patterns and missed opportunities with surgical precision. As someone haunted by inexplicable losses, the first time I loaded a Lichess PGN into ChessIs felt like lifting a fog. 

Stockfish’s ruthlessly objective evaluations exposed my subtle positional oversights—not just screaming blunders—with color-coded threat visualizations turning abstract dangers into vivid red arrows piercing my flawed plans. Watching the "Why Blunder?" replay of my collapsed endgame, where ChessIs animated defensive resources I’d dismissed as impossible, was equal parts humbling and revelatory. 

The Threat Display feature alone revolutionized my analysis: seeing my opponent’s hidden tactics materialize on the board after I’d resigned made future traps instinctually recognizable. 

What sets ChessIs apart is its pedagogical rigor. Ordinary apps flag mistakes; ChessIs explains them in context, pairing engine lines with plain-English insights like "Overlooked pin escape via ...Bg4" that bridge silicon logic to human understanding. Customizing engine depth for deeper dives on critical positions uncovered nuances even my coach missed—adjusting threads/hash to max power revealed resources five moves deep that quick scans ignored. 

For daily practice, the accuracy percentage tracker became my obsession, quantifying incremental growth when grinding tactics felt futile. 

The opening explorer saved me weeks of database hopping, while the position editor let me test defensive ideas against Stockfish’s cold brutality. When migrating phones, seamless Pro license restoration via Google Play affirmed the developer’s user-first ethos. 

Is it perfect? Some UI quirks exist, but ChessIs’ uncompromising depth makes other analyzers feel like toys. It’s the closest thing to having Stockfish as a tireless, patient mentor.