Exploding 7's vs Blitz21
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Exploding 7's
A straightforward card game designed for quick and enjoyable play. Test your luck and strategy in this simple yet engaging digital card experience.
- Simple card gameplay
- Quick play sessions
- Engaging card experience
- Digital card game
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A fun and simple card game app.
Blitz21
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Blitz21: Fast Card Puzzle is a fast-paced card brain game that puts a strategic twist on the classic game of 21. Place cards into columns and try to reach exactly 21 in each one. Go over and you bust, but hit 21 perfectly for massive bonus points. HOW TO PLAY Cards are dealt one at a time from the deck. Place each card into one of four columns. Your goal is to make each column add up to exactly 21 for maximum points. Getting close to 21 still earns points, but going over 21 busts that column. Clear all four columns at 21 for a Blitz bonus multiplier. WHY PLAYERS LOVE BLITZ21 Blitz21: Fast Card Puzzle takes the excitement of blackjack-style card games and turns it into a solo brain puzzle. Each quick round takes just minutes, making it perfect for short breaks. The strategic card placement creates a satisfying blend of luck and skill that keeps you coming back for one more round. FEATURES - Fast-paced 21-point card puzzle with quick, addictive rounds - Strategic card placement across four columns - Perfect 21 bonus and Blitz multiplier for hitting all columns - High score tracking with personal best challenges - Multiple card deck designs and table themes - Clean, beautiful card game visuals with smooth animations - Quick rounds perfect for short gaming sessions and breaks - Brain training that improves mental maths and planning skills - Daily challenges with unique card puzzle setups - Lightweight app that works offline, no WiFi needed - Free to play card brain game with no registration required - Suitable for anyone who loves card games and number puzzles PERFECT FOR Blitz21: Fast Card Puzzle is perfect for fans of solitaire, blackjack, and number puzzle games. If you enjoy quick card games that challenge your brain, this 21-based puzzle delivers fast, satisfying rounds. Great for commutes, waiting rooms, or whenever you have a few minutes for a brain workout. Download Blitz21: Fast Card Puzzle now for free. Race to 21 today!
Screenshots
Verdict
The clearest difference is in-app purchases: Blitz21 at none against Exploding 7's's 1. Blitz21 also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Exploding 7's's advantage is ads (none vs shown). On price 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. Exploding 7's sells 1 one-off in-app purchase. Blitz21 asks for nothing beyond the download.
| Parameter | Exploding 7's | Blitz21 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (6 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 4 days | — |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 391 MB |
| Age rating | 4+ | 4+ |
| Developer | Jonathan Gerber | Somendra Shah |
In-app purchases
Exploding 7's
- Remove ads$1.99
Blitz21
No in-app purchases









