Head to head

ChessHelper vs DecodeChess

By the Best AI Chess Helper team (ChessHelper) · Published and updated November 12, 2026

ChessHelper (chesshelper.ai) and DecodeChess both put an engine to work for learning, but they start from opposite ends. ChessHelper brings engine suggestions to Chess.com and Lichess for analysis and review of your finished games, at a strength you choose. DecodeChess takes a game or position you give it and explains the engine's moves in words.

We compared the two using each company's published features and pricing, checked on their own websites in November 2026. ChessHelper is our product, so we have flagged the categories where DecodeChess is the better choice.

Prices as listed on chesshelper.ai and decodechess.com in November 2026. ChessHelper Pro is $2.99 for the first month or $39.99 for the first year as an introductory offer.

Two approaches to the same problem

Both products start from the same observation: a raw engine line is hard to learn from. They solve it differently.

ChessHelper solves it with level and context. You set the engine anywhere from 800 to 3200 Elo, and suggestions appear as arrows when you analyze positions or review finished games on Chess.com or Lichess, with a position score, an evaluation bar and alternative lines. Your games are saved, and the dashboard tracks rating progress and accuracy over time. The idea is that a suggestion near your level, seen in context and repeated across many games, teaches more than a perfect move you cannot follow.

DecodeChess solves it with language. Its site describes it as an AI chess tutor that combines its own AI layer with the Stockfish NNUE engine and explains moves in plain, intuitive language for players rated up to about 2000. For each position it organizes the explanation into tabs: threats, good moves, plans, the function of each piece and the concepts involved. You bring the game to it; DecodeChess supports PGN and FEN uploads.

Feature comparison

Where DecodeChess wins: explanations

If your main question is "why", DecodeChess is the stronger tool. An arrow and a score tell you which move is best; a sentence about the threat it creates or the plan it supports tells you what to look for next time. For a club player who reviews a handful of games carefully, written explanations can be the faster way to absorb ideas such as weak squares and piece activity.

It also suits players who prefer to study away from the playing site. Because it works from uploaded PGN and FEN, it does not matter where the game was played: over the board, on a club server or on any website.

Where ChessHelper wins: level, context and history

ChessHelper's advantages come from where and how it runs. Adjustable strength means a beginner and a 1900 player see different, appropriate suggestions in the same position. Running on Chess.com and Lichess removes the export and upload step, which matters if you review every game rather than an occasional one. The saved history and analytics dashboard turn single reviews into a trend you can track.

It also covers a wider rating range. DecodeChess describes its explanations as aimed at players up to about 2000. ChessHelper's 800 to 3200 range lets a strong club player move straight to full-strength lines, and lets a newcomer keep suggestions simple.

A position where the two approaches differ

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4.d34.c34.O-O

Some positions have one right answer. Many have several good ones that lead to different kinds of game. The Italian Game after 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 is a classic example.

At depth 20 with four lines, Stockfish rated the top four moves within two tenths of a pawn of each other: 4.d3 at +0.57, 4.c3 at +0.54, 4.O-O at +0.46 and 4.Nc3 at +0.38.

These are not four versions of the same move. 4.c3 prepares d2-d4 and an early fight for the center; the engine's main line continues 4...Nf6 5.d4 exd4 6.e5. 4.d3 keeps the center closed and leads to slow maneuvering. A score cannot tell you which game you want to play.

Here the tools pull in different directions. A written explanation describes the plan behind each move, which is DecodeChess's strength. ChessHelper shows all of these as close alternatives with their lines, and pairs them with its Italian Game guide, so you can choose a plan and then see how your own games with it go over time in the dashboard. Neither approach is wrong. The question is whether you learn better from words or from repetition in your own games.

Pricing compared

On list prices the two are close. DecodeChess is slightly cheaper per month after ChessHelper's introductory period, and its credit packs suit occasional use. ChessHelper's introductory first month and first year are cheaper than DecodeChess's regular price.

Which one to choose

Choose DecodeChess if you study a few games in depth, want explanations in words, and are happy to upload games from wherever you played them. Choose ChessHelper if you want suggestions at your own level when you analyze on Chess.com or Lichess, review most of your games, and want history and progress tracking in one place. Some players use both: ChessHelper for routine review and DecodeChess for the one game a week that deserves a long explanation.