Comparison

On High Alert vs Ship Maneuvering Simulator

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

Head to head
About

On High Alert

Features
Read full description

In this simple tactical game, you must use stealth and wits to complete the objective. Control one or multiple thieves, stay away from the guards, and steal the gold! VARIED GAMEPLAY Many different levels and different game objectives! Guards that patrol in different way will always keep you engaged! MULTIPLAYER Engage your friends in real time multiplayer! Play either as a guard or thief: As a guard, you must protect the gold and try to locate the thiefs. As a thief, you must avoid confrontation, work in teams to distract the guards and outsmart them!

About

Ship Maneuvering Simulator

Pilot large vessels through challenging maritime scenarios. Experience realistic ship physics and handling in various missions, from navigating channels to berthing. Compete globally on leaderboards and unlock new ships as you progress.

Highlights
  • Realistic ship physics (MMG hydrodynamic model)
  • Career mode with ranks and missions
  • 8 unique ships with distinct handling
  • Free play mode with custom settings
  • Weekly and all-time leaderboards
  • Detailed sound effects
Features
Read full description

Experience what it really takes to handle a large ship. Ship Maneuvering Simulator is built on the MMG hydrodynamic model, the same kind of model used in professional ship handling research, so every ship drifts, pivots and answers the helm the way the real thing does. Made by a professional maritime pilot who handles large ships every day, and tuned to feel like the real thing, but built to be fun: time runs faster than real life, so you get to the challenge quickly. CAREER MODE • Start as Cadet and earn your stripes, rank by rank, up to Captain and Pilot • Real ship handling missions: buoyed channels, stopping, turning, going astern, anchoring, holding position in wind and current, berthing alongside, entering a lock and leaving the quay with tugs • Earn up to 3 stars per mission and unlock new ships • Weekly and all-time leaderboards for every mission, so you can compete with players worldwide 8 SHIPS, EACH WITH ITS OWN CHARACTER Cargo ship, navy supply ship, loaded and empty bulker, large container ship, cruise ship, frigate and battleship. Each has its own engine, speed and handling, from a slow loaded bulker to a 28-knot frigate. REALISTIC HANDLING • Propeller walk when going astern • Drift in turns and a pivot point that moves with speed • Rudder effect that depends on propeller wash and speed • Bow thruster that loses power as speed builds • Realistic stopping distances and turning circles • Wind and current that set you off your course • Tugs that push and pull for berthing and unberthing FREE PLAY Take any unlocked ship out at sea, on the river or in port. Set the wind and current yourself and practise at your own pace. SOUND AND LOOK An engine sound for each ship (twin engines, frigate gas turbines), bow thruster, tugs, collisions and a busy harbour. Whether you're a seafarer, a maritime student or just love ships, see if you have what it takes to bring her alongside without a scratch.

Screenshots

On High Alert3 screens
Ship Maneuvering Simulator4 screens

Verdict

The call

The clearest difference is in-app purchases: Ship Maneuvering Simulator at none against On High Alert's 6. Ship Maneuvering Simulator also leads on update cadence (every 8 days vs every 2 weeks). On High Alert's advantage is iOS requirement (12.0 vs 15.0). On price, ads and device support 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. On High Alert sells 6 one-off in-app purchases. Ship Maneuvering Simulator asks for nothing beyond the download.

UpkeepUpdate frequency

On High Alert ships an update every 2 weeks, Ship Maneuvering Simulator every 8 days. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
On High Alert versus Ship Maneuvering Simulator: the parameters behind the verdict, then further details
ParameterOn High AlertShip Maneuvering Simulator
PriceFreeFree
Rating—4.3 (104 ratings) — better
Positive reviews—85.9% of reviews
Number of ratings—104 — better
Update frequencyEvery 2 weeksEvery 8 days — better
AdsYesYes
In-app purchasesYesNo — better
Monetization—Ad-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size157 MB390 MB
Age rating9+4+
DeveloperSynthetic Mind ABWPC

In-app purchases

6 purchases

On High Alert

One-time6
  • Handful of Gems$0.99
  • Pile of Gems$3.99
  • Pouch of Gems$8.99
Show 3 more
  • Barrel of Gems$22.99
  • Chest of Gems$54.99
  • Vault of Gems$109.99
None

Ship Maneuvering Simulator

No in-app purchases

Questions

Is On High Alert free?
On High Alert is free to download, with in-app purchases available.
Is Ship Maneuvering Simulator free?
Ship Maneuvering Simulator is free to download, with no in-app purchases.
Do On High Alert or Ship Maneuvering Simulator have ads?
Both On High Alert and Ship Maneuvering Simulator show ads.
Which is updated more often, On High Alert or Ship Maneuvering Simulator?
On High Alert ships an update every 2 weeks, and Ship Maneuvering Simulator every 8 days. Most recently, On High Alert was updated on October 26, 2026 and Ship Maneuvering Simulator on October 30, 2026.

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