EDGE21 vs Submarine
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
EDGE21
Master blackjack strategy with this educational tool. Learn basic strategy, practice card counting, and identify mistakes with detailed explanations and engaging game modes. Designed for entertainment and skill improvement.
- Learn Basic Strategy
- Speedrun Mode
- Boss Hand Mode
- Card Counting Practice
- Mistake Identification
- Detailed Explanations
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EDGE21 is an educational tool designed to teach blackjack strategy and game concepts. This app is for entertainment purposes only. EDGE21 is a blackjack strategy training app designed to help you master optimal decision-making at the table. FEATURES: • Learn Basic Strategy with clear rules for every hand combination • Speedrun Mode: Make rapid-fire decisions and test your skills • Boss Hand Mode: Challenge yourself with difficult hands • Count Sprint: Practice card counting techniques • Leak Detector: Identify and fix mistakes in your strategy • Detailed explanations for every move so you understand WHY each decision is optimal GAME MODES: Choose your preferred learning style with independent game modes designed to improve different aspects of your blackjack play. Perfect for: - Casino enthusiasts wanting to improve their game - Blackjack players learning basic strategy - Anyone wanting to practice decision-making and strategy DISCLAIMER: This app is for entertainment and educational purposes only. It is not intended for gambling or real-money activities. Always gamble responsibly and within your means.
Submarine
Pilot a submarine through vibrant underwater worlds, dodging hazards like torpedoes and mines. Collect coins to unlock new submarines and power-ups. Compete globally on leaderboards for the longest survival time.
- Touch and drag steering
- Three lives per run
- Collect coins and treasure
- Unlock 12 unique submarines
- Power-ups like shields and magnets
- Global leaderboards
- Offline play
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Dive into the depths with Submarine: Reef Pilot, an action-packed endless submarine game that's easy to pick up but hard to master! Steer your sub through beautiful underwater landscapes while dodging torpedoes, mines, and depth charges. How long can you survive? SIMPLE CONTROLS, DEEP STRATEGY • Touch and drag to steer your submarine up and down • Easy to learn, challenging to master • Perfect for quick gaming sessions or extended runs SURVIVE THE DEPTHS • Three lives to prove your skill. Be careful! Every hit counts! • Face increasingly difficult hazards as you progress • Earn brief invincibility after each hit to recover and reposition COLLECT & UPGRADE • Gather coins to rack up points • Discover rare treasure chests on the ocean floor • Spend coins in the shop to unlock 12 unique submarines • Choose your strategy: nimble small subs, balanced medium hulls, or tank-like large submarines SUBMARINE SIZE CLASSES Each submarine has different characteristics: • Small — Lightning-fast and agile, but fragile (1 hit per life) • Medium — Balanced speed and durability (2 hits per life) • Large — Slow but mighty tanks (3 hits per life) Pick the hull that matches your play style! POWERFUL PICKUPS Collect glowing power-ups to turn the tide: • Shield — Pass through hazards unharmed • Coin Magnet — Pull in coins from across the screen • Auto-Fire — Blast hazards out of your way • 2× Score — Double your distance points • Bonus Life — Restore lost lives (when below max) CONTINUE YOUR RUN Lost your last life? Spend coins to continue right where you left off with all three lives restored! Keep pushing for that perfect run. COMPETE GLOBALLY • Two leaderboards: Best Single Run and All-Time Distance • Game Center integration for global competition • Track your local top 10 runs • Challenge friends and climb the ranks BEAUTIFUL UNDERWATER WORLD • Parallax scrolling mountain ranges and seabed • Randomized landscapes made with delightfully colorful art • Discover sunken wrecks as you explore PREMIUM FEATURES • No ads — pure gameplay • One-time coin packs available (completely optional) • All submarines unlockable through gameplay • iCloud sync keeps your progress across devices • Full offline play supported POLISH & FEEL • Haptic feedback on every impact and pickup • Dynamic music that adapts to each screen • Satisfying sound effects and visual juice Whether you're chasing the top of the leaderboard or just killing time between meetings, Submarine: Reef Pilot delivers quick, satisfying submarine action. Every run is a fresh challenge with randomized hazards and procedural landscapes. Download now and see how far you can go!
Screenshots
Verdict
The clearest difference is in-app purchases: EDGE21 at none against Submarine's 4. EDGE21 also leads on iOS requirement (15.1 vs 17.6). Submarine's advantage is update cadence (every 4 days vs fortnightly). On price, rating, ratings volume and ads 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. Submarine sells 4 one-off in-app purchases. EDGE21 asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for EDGE21 against 5.0 for Submarine. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
EDGE21 ships an update fortnightly, Submarine every 4 days. Both last shipped on October 31, 2026.
| Parameter | EDGE21 | Submarine |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 | 2 |
| Update frequency | Fortnightly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.6 |
| Further details — not scored | ||
| Size | 24 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Mark Baumrind | MooreDev Technologies LLC |
Customer experience
EDGE21
Submarine
In-app purchases
EDGE21
No in-app purchases
Submarine
- 1,000 Coins$0.99
- 5,000 Coins$2.99
- 15,000 Coins$4.99
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- 50,000 Coins$9.99









