CasinoWise is a field guide, written the way a reference book is.
Most casino information is either printed in a hurry on a machine or written by somebody who wants you to play. This one sets out what each game costs in numbers you can hold side by side — and then lets you rehearse the decisions that keep the cost down.
It is an iPhone app, built by a small independent team, for adults who are curious about how these games actually work. There is no casino behind it, no operator partnership, and nothing to sign up for.
2026-11-05
iPhone, iOS 16 or later
Free, no in-app purchases
Casinowise Ltd
Where the figures come from.
House edge is the average share of each wager a game keeps over a very large number of bets. It is a property of the rules, not of a session: one evening can end well above or well below it.
Every figure in the app is stated against a basis — six decks with the dealer standing on soft seventeen, a European wheel, a machine's published paytable. Where the edge depends on the player, the app reports it for perfect play and says so on the page.
Side bets are reported separately, at their own edge. A game with a cheap main bet and an expensive side bet is a cheap game only if you leave the side bet alone.
The app is a reference, not advice. It does not tell you whether to gamble, and it does not sell anything. If you want a plain account of what the odds are, it is here; if you want a bet, it is not.
- Deuces Wild 0.27%
- Keno 27.00%
The range is a factor of a hundred. That is the whole argument for reading the figures first.
What is in it, and what is deliberately not.
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Rules, house edge, return to player and a bet-by-bet table for 24 games across cards, poker, dice, wheels and machines.
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Twelve guides and a 39-term glossary, searchable together with the games.
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Four drills with recorded accuracy and best streak, kept on your own device.
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Responsible-play information with a helpline, and a minimum age of eighteen enforced by a gate.
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No real-money play, no wagering, no simulated balance, no virtual coins and nothing to buy.
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No operator, venue or bonus listings, and no links out to a casino.
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No accounts, no analytics and no advertising. Your saved items never leave the phone.
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No predictions and no systems. A progression does not change the edge, and the app says so.
Found a figure you disagree with?
Tell us. Every correction is read by the people who wrote the figures, and the game page is rebuilt against the basis you cite.