21 Trainer vs Blackjack Counting
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
21 Trainer
Practice card counting to improve your blackjack skills. Challenge yourself to count as many cards as possible within a 30-second time limit.
- Card counting practice
- 30-second challenges
- Blackjack game improvement
- Beat the dealer strategy
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Want to learn how to count cards? This game will help you getting better and beat the game of blackjack. Features: - Challenge yourself to count as many cards as possible in 30 seconds
Blackjack Counting
Learn to count cards for blackjack with this easy-to-use application. Master the game and improve your odds at the casino.
- Easy card counting
- Blackjack strategy training
- Improve odds
- Casino game practice
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With this app, anyone can count blackjack easily!
Screenshots
Verdict
The clearest difference is rating: Blackjack Counting at 4.1 against 21 Trainer's 3.4. 21 Trainer's advantage is update cadence (every 5 days vs every 31 months) and iOS requirement (9.0 vs 16.0). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Blackjack Counting holds the better App Store score, 4.1 against 3.4. Both are backed by a comparable volume of ratings — 20 and 38 respectively.
21 Trainer ships an update every 5 days, Blackjack Counting every 31 months. The most recent releases landed on June 7, 2026 and September 20, 2026 respectively.
| Parameter | 21 Trainer | Blackjack Counting |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (20 ratings) | 4.1 (38 ratings) — better |
| Positive reviews | 53.8% of reviews | — |
| Number of ratings | 20 | 38 — better |
| Update frequency | Every 5 days — better | Every 31 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 9.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 37 MB | 4 MB |
| Age rating | 17+ | 4+ |
| Developer | Bulletproof Entertainment | Tomoki Tsukiyama |
Customer experience
21 Trainer
Blackjack Counting
In-app purchases
21 Trainer
No in-app purchases
Blackjack Counting
No in-app purchases
Questions
Is 21 Trainer free?
Is Blackjack Counting free?
Which has better reviews, 21 Trainer or Blackjack Counting?
Do 21 Trainer or Blackjack Counting have ads?
Which is updated more often, 21 Trainer or Blackjack Counting?
Other comparisons
