Comparison

Blackjack Sharp Trainer vs Ultrapool

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Blackjack Sharp Trainer

Master blackjack strategy and card counting with this comprehensive training app. It offers detailed simulations, a unique roguelite mode, and personalized feedback to improve your game. Play offline and learn without interruptions.

Highlights
  • Basic strategy trainer with custom rule sets
  • Card counting simulator with configurable environments
  • Roguelite mode for strategic decision-making
  • Full hand play-out and independent splits
  • Non-blocking feedback and post-hand review
  • Mistake Journal with spaced repetition
  • Offline play
Features
Read full description

Sharp 21 is the most serious blackjack training app on the App Store. Built for players who want to walk into a casino prepared, not just entertained. BASIC STRATEGY TRAINER Master every decision at the table. Select your exact rule set — H17 or S17, DAS, surrender rules, blackjack payout — and drill hands with instant, non-blocking feedback. Every hand plays out completely: you hit, split, double down, the dealer draws, and the outcome resolves. A subtle flash tells you the moment you make a wrong call, but the hand keeps going — just like a real table. After each hand, review exactly what you got wrong and why. Track your chip balance with flat bets, build accuracy streaks, and let the Mistake Journal pinpoint your weak spots so you can focus where it matters. CARD COUNTING SIMULATOR Configure every detail of your practice environment: number of decks, dealer rules, deck penetration, counting checkpoints, base bets, and bet spreads. Choose from preset spreads (Conservative, Moderate, Aggressive, Wong Out) or build a custom spread unit by unit. Practice maintaining a running count, converting to true count, and sizing your bets correctly — all under configurable casino noise events like early shuffles and pit boss distractions. Toggle the running count display on or off as a learning scaffold. THE SHARP — ROGUELITE MODE A roguelite that turns basic strategy decisions into a scoring engine. Earn Chips x Multiplier for correct plays, build Rush streaks for escalating multipliers, and collect from a pool of 46 unique modifiers across draft picks and shop purchases. Beat escalating blinds across shoes, manage risk-reward modifiers like Glass Cannon and Loan Shark, and chase your highest run. No card counting required — The Sharp is accessible to every player and endlessly replayable. KEY FEATURES - Full hand play-out in every mode — hands resolve completely, splits play independently - Rule-variant-aware strategy engine — not a single static chart - Non-blocking wrong-decision feedback — learn without flow interruption - Post-hand decision review with full context - Post-session analytics: accuracy breakdowns, mistake patterns, chip results - Mistake Journal with spaced repetition to target weak spots - Interactive strategy chart viewer - Fully offline — no account, no internet required - No ads. No subscriptions. Pay once, own it forever.

About

Ultrapool

Experience a unique pool game with roguelite elements and wacky ball effects. Craft strategic builds and pull off incredible trickshots to impress the bartenders. Survive 10 rounds of arcade-style pool with a variety of unique ball abilities.

Highlights
  • Roguelite pool gameplay
  • Wacky ball abilities
  • Strategic build crafting
  • Arcade-style trickshots
  • 10-round survival mode
  • Ball combination mechanics
Features
Read full description

The pool bar is always open! Ultrapool is a colorful roguelike about playing pool with a bunch of wacky balls with crazy effects. Carefully craft a perfect build and get the craziest trickshots! Get comfy, choose a cocktail, and get ready for a very special game of pool. Assemble a triangle of balls with strange effects and get the sickest trickshots. The bartenders won't be easy to impress! Ultrapool is an arcade-y colorful roguelike that plays like a pool version of Balatro and Super Auto Pets. Pocketing balls gives you score, and extra score gives you money you can spend at the bar to buy and improve your set of balls. Try to survive 10 rounds! We got both! Easy to pick up pool mechanics: just get the balls in the holes! But as you discover the wacky abilities the balls have, you'll get new ideas of how to get your score ever higher. A ghost ball that reappears on the table? A chicken ball that lays spherical eggs? A bomb that explodes if you bump it too much? The Earth? Anything is possible (as long as it's round and it rolls nicely, no cubes allowed!) Once you think you know the game, the cocktail bar opens. Ask the bartender to mix any two balls and he will serve you something special! Some of these will feel like they should break the game wide open, but you'll need every edge you can get if you want to pull off an all nighter.

Screenshots

Blackjack Sharp Trainer4 screens
Ultrapool4 screens

Verdict

The call

The clearest difference is rating: Blackjack Sharp Trainer at 5.0 against Ultrapool's 4.6. Blackjack Sharp Trainer also leads on iOS requirement (15.1 vs 17.0). Ultrapool's advantage is ratings volume (171 vs 1) and update cadence (every 4 days vs every 3 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Blackjack Sharp Trainer sells 1 one-off in-app purchase and Ultrapool sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Blackjack Sharp Trainer holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Ultrapool has 171 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Blackjack Sharp Trainer ships an update every 3 weeks, Ultrapool every 4 days. The most recent releases landed on September 24, 2026 and October 12, 2026 respectively.

Scorecard5 real differences · 6 level
Blackjack Sharp Trainer versus Ultrapool: the parameters behind the verdict, then further details
ParameterBlackjack Sharp TrainerUltrapool
PriceFreeFree
Rating5.0 (1 ratings) — better4.6 (171 ratings)
Positive reviews—88.8% of reviews
Number of ratings1171 — better
Update frequencyEvery 3 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreeFree
Best chart rank—#126 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size31 MB408 MB
Age rating4+12+
DeveloperDacite Dev LLCoffbrand games

In-app purchases

1 purchases

Blackjack Sharp Trainer

One-time1
  • Sharp 21 Pro$4.99
1 purchases

Ultrapool

One-time1
  • Unlock Full Game$5.99

Questions

Is Blackjack Sharp Trainer free?
Blackjack Sharp Trainer is free to download, with in-app purchases available.
Is Ultrapool free?
Ultrapool is free to download, with in-app purchases available.
Which has better reviews, Blackjack Sharp Trainer or Ultrapool?
Blackjack Sharp Trainer is rated higher. Blackjack Sharp Trainer averages 5.0 out of 5 from 1 ratings, while Ultrapool averages 4.6 from 171 ratings.
Do Blackjack Sharp Trainer or Ultrapool have ads?
Neither Blackjack Sharp Trainer nor Ultrapool shows ads.
Which is updated more often, Blackjack Sharp Trainer or Ultrapool?
Blackjack Sharp Trainer ships an update every 3 weeks, and Ultrapool every 4 days. Most recently, Blackjack Sharp Trainer was updated on September 24, 2026 and Ultrapool on October 12, 2026.

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