Solitaire Ultra vs Double Down

Solitaire Ultra brings five classic card games together in one elegant app — designed for iPhone, iPad, and Mac. Play Klondike and Yukon the way you remember them. Race against par on Pyramid, sweep the peaks of TriPeaks and DuoPeaks. Every game features smooth, realistic card-by-card dealing, drag-and-drop movement, and intelligent hints when you're stuck. FIVE GAMES, ONE APP • Klondike — the classic. Choose 1-card or 3-card draw, unlimited or single redeal, and auto-complete when only foundations remain. • Yukon — a Klondike-style solitaire where all cards are dealt face-up and any card can be moved with everything stacked on top of it — no stock pile. • Pyramid — pair cards that total 13 to clear the pyramid before time runs out. • TriPeaks — race up three peaks chaining cards ±1 from the waste, building streaks for huge bonus points. • DuoPeaks — a faster, tighter twin-peaks variant for shorter sessions. DAILY CHALLENGE A new DuoPeaks puzzle every day, identical for every player. Build your streak, compete on the daily leaderboard, and never miss a day with optional reminders. MAKE IT YOURS • 4 card face styles — Classic, Grey, Four-Colour, and Double Index for accessibility. • 18 card back designs — from minimal Sakura and Ivory to dramatic Obsidian, Circuit, and Celestial. • 7 table themes — Classic green, Paprika, Burgundy, Jade, Walnut, Ocean, Midnight. • Two deck sizes — standard or poker proportions. • Sound effects that actually sound like cards on a table — modern or classic style, fully adjustable. THOUGHTFUL DETAILS • Realistic card-by-card dealing animation. • Drag-to-move and double-tap to auto-send to the foundation. • Per-game hint system and undo-friendly scoring. • Haptic feedback on iPhone. • Light, dark, or follow-system appearance. • Daily reminder notifications you can schedule to your time. GAME CENTER Leaderboards for every game mode and the Daily Challenge. Achievements for streaks, perfect games, fast wins, and more. Compete with friends or chase the global rankings. ICLOUD SYNC Your settings, daily challenge history, and preferences sync across all your devices automatically. NO ADS. NO PAYWALLS. NO TRACKING. Solitaire Ultra is a complete card game, not a marketing funnel. Play as much as you want, customise to your heart's content, no ads, no popups, no paywalls. An optional Tip Jar in Settings lets you support development if you'd like to — but nothing is ever locked behind it. Every bit helps me keep building this app and creating future ones. Access Tips in Settings > Support This App

Learn blackjack basic strategy and card counting, with the math behind each move. Play complete practice rounds and get feedback on every decision. Compare the expected value of hit, stand, double, split, and surrender, along with bust risk and win, push, and loss probabilities. Your progress measures the choices you make, so a lucky result does not count as a good decision. Set the number of decks, dealer soft-17 behavior, blackjack payout, surrender, doubling, and split rules. Save your own presets, consult a basic-strategy chart for the active rules, or build a hand in the solver. Pro unlocks Counting Lab and table themes. Main play, tutorials, and charts stay free. Counting Lab takes you from Hi-Lo card tags to running counts, full-deck countdowns, true counts, and index plays. Count opening hands across a table of up to five players. In Applied Counting, update the running count, convert it to a true count, and choose a play. Each drill states its rule assumptions and shows where you need more practice. Work through interactive lessons, take a mastery exam, or let Daily Coach choose a short review from your past mistakes. The Daily Challenge gives you a new set of decisions each day. Review weak spots in Progress and return directly to a focused drill. Challenge a friend with a hand and compare decisions after they answer. Practice offline on iPhone, iPad, and Mac. No ads or account required. This app is an educational strategy trainer: no real money is staked and no wagers are placed.