Comparison

EDGE21 vs Submarine

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

Head to head
About

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.

Highlights
  • Learn Basic Strategy
  • Speedrun Mode
  • Boss Hand Mode
  • Card Counting Practice
  • Mistake Identification
  • Detailed Explanations
Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

EDGE213 screens
Submarine2 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Submarine sells 4 one-off in-app purchases. EDGE21 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

EDGE21 ships an update fortnightly, Submarine every 4 days. Both last shipped on October 31, 2026.

Scorecard3 real differences · 7 level
EDGE21 versus Submarine: the parameters behind the verdict, then further details
ParameterEDGE21Submarine
PriceFreeFree
Rating5.0 (2 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings22
Update frequencyFortnightlyEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.6
Further details — not scored
Size24 MB19 MB
Age rating4+4+
DeveloperMark BaumrindMooreDev Technologies LLC

Customer experience

EDGE21

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Submarine

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

EDGE21

No in-app purchases

4 purchases

Submarine

One-time4
  • 1,000 Coins$0.99
  • 5,000 Coins$2.99
  • 15,000 Coins$4.99
Show 1 more
  • 50,000 Coins$9.99

Questions

Is EDGE21 free?
EDGE21 is free to download, with no in-app purchases.
Is Submarine free?
Submarine is free to download, with in-app purchases available.
Which has better reviews, EDGE21 or Submarine?
EDGE21 and Submarine are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.
Do EDGE21 or Submarine have ads?
Neither EDGE21 nor Submarine shows ads.
Which is updated more often, EDGE21 or Submarine?
EDGE21 ships an update fortnightly, and Submarine every 4 days. Most recently, EDGE21 was updated on October 31, 2026 and Submarine on October 31, 2026.

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