ChessveraSupport
Something not working, a question, or an idea to make Chessvera better? Email us:
A real person reads every message. We usually reply within a few days.
It helps to include
- Your phone model and its iOS or Android version.
- The Chessvera version, if you know it (shown on the app's page in the App Store or Google Play, and on Android in Settings, Apps, Chessvera).
- What you did, what you expected and what happened. A screenshot helps.
- For a problem with a game or its review, the game in PGN (Review, Paste a game accepts the same format).
- Your Chessvera username, if the problem is about your account.
Please don't send your password. We will never ask for it.
Frequently asked questions
Is Chessvera free?
Yes, and there are no ads. Playing the bots with coaching, game review, retrying your mistakes, unlimited mixed puzzles, the daily puzzle, all fundamentals lessons and 6 starter opening courses are free. Free players also get a daily taste of the Pro tools.
Chessvera Pro is an optional one-time purchase (US$2.99; the store shows the price for your country) that adds more training tools. See Pricing.
Is Pro a subscription?
No. You pay once and keep it, including later improvements. Nothing renews.
I bought Pro but it isn't unlocked.
Open the Pro screen (Home, the profile button, Chessvera Pro) and tap Restore Purchases, or use Restore purchase in Settings. Make sure the phone is signed in to the same Apple ID or Google account you bought it with. If it still doesn't work, email us.
How do I get a refund?
Purchases are handled by Apple or Google, so refunds are too. Apple: reportaproblem.apple.com. Google Play: Google Play refund help.
Do I need an account?
No. All the training works without one. An account is only for online features: rated games against the bots, friends, challenges and leaderboards. It needs only a username and a password.
I forgot my password.
If you added and confirmed an email, tap "Forgot password?" on the sign-in screen and we email you a code. Without a confirmed email the password can't be recovered. If you also linked Apple, Google or Lichess, sign in with that instead.
Does it work offline?
Yes, for the bots, reviews, puzzles, lessons and openings. Importing games, live TV, the opening explorer and online features need an internet connection.
Where are my games stored?
On your phone. Reviews run on your phone too. If you create an account, only what online features need is stored on our server. See the privacy policy.
Why can't I connect my Chess.com account like Lichess?
Lichess is free and open source and lets apps like Chessvera connect to your account. Chess.com doesn't offer that to other apps.
You can still bring your Chess.com games in: add your Chess.com username to import your public games, or paste a game in PGN. Chessvera reviews them for free.
How strong is the engine?
Chessvera uses Stockfish 19, the open-source engine, in a mobile build with a small neural network so it fits on a phone. It is far stronger than any human, but not as strong as desktop Stockfish with its full network. For coaching your games, that difference rarely matters.
Are the explanations always right?
The engine's verdicts are reliable, and the explanation names a concrete reason when there is one (a fork, a loose piece, a missed mate, king safety and so on). When there is no simple reason, Chessvera says so and shows you the line instead of inventing one.
Can I play real people?
Yes. Sign in with Lichess to play rapid and classical games on Lichess from inside the app, or create a free Chessvera account to challenge friends. In games against people the coach and engine are off, as fair play requires; the review is waiting when the game ends.
Can other players message me?
No. There is no chat between players in Chessvera. Other players can see your username, ratings, scores and profile.
How do I delete my account or data?
In the app: Home, the profile button, your username, then Delete account. Data that is only on your phone is removed when you uninstall the app. More on the Delete your account page.
Is Chessvera open source?
Yes, under the GNU GPL v3, because it includes the Stockfish engine. See Source code for where the code is published and the open-source work it is built on.
Which phones does it run on?
iPhone and Android phones.
Is Chessvera affiliated with Stockfish, Lichess or Chess.com?
No. Chessvera is an independent app. It includes the Stockfish engine under its open-source licence and uses the public services Lichess and Chess.com offer to other apps.