Comparison

OPYC vs SailSim

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

Head to head
About

OPYC

Experience realistic sailing with this physics-based simulation. It uses real-time wind forecasts and offers immersive 3D views with dynamic weather and sea conditions. Compete in races or explore the world by earning in-game coins.

Highlights
  • Physics-based sailing simulation
  • Real-time wind forecasts
  • Immersive 3D view
  • Weather routing optimization
  • Create races and regattas
  • Earn in-game coins
Features
Read full description

OPYC* is a worldwide sailing simulation using physics. The game runs locally on your device, using laws of physics. It is different from other web sailing games that run on a server, whether you are actively sailing or not. This allows the game to be more like real sailing, with waves, Chinese jibes, flapping sails and unexpected situations. Go out of control in strong winds. Its quantum sailing. The simulation uses real wind forecasts from NOAA GFS. Interpolated real time winds ( 144h forecast, 3 hour interval ). VRTool chart tool embedded. Download wind grid and perform weather routing optimizations. Draw routes and tracks. Add marks. Manage chart objects. To participate, you have to register a boat name, skipper name, password and choose a port to start from. May be used in multiple devices. Last device connecting has the key. Use boat name and password to login. Earn OPYC coins by finding and crossing gates around the world (currently gates only in North, South, Central Americas and Europe). You can also select a venue and create a race (triangle or linear course). Create a regatta and invite your friends to participate. The new 3D view brings immersive sailing challenges, with sea waves, dynamic sail shapes, oscillating wind arrow and other characters. * OPYC, short for Old Pelican Yacht Club, since 2018 serving the virtual sailing community with navigation software and weather forecasts.

About

SailSim

Learn and experience sailing with a realistic physics-based simulator. Explore the seas, challenge yourself with exams and adventures, and play with others in multiplayer sessions. Features detailed sailing mechanics and marine terminology.

Highlights
  • Realistic physics simulation
  • Multi-player sessions
  • Exams and challenges
  • Learn sailing terminology
  • Multiple sailing vessels
  • Keyboard and controller support
Features
Read full description

As a Live-Aboard I wanted to create something anyone could use for learning, as well as for those rainy days when going out to sea is difficult but you still want to sail. The sailing simulator was created to provide sailing knowledge in a fun and intuitive way. The main goal is to have fun and learn something along the way. Hopefully that goal is being achieved with every update i make to the simulator. * Play with others in a Multi-Player session * Collect Stats and share them with others * Test your self through Exams * Try out different sailing vessels * Learn different parts of a sailboat * Learn sailing through simple yet instructive courses * Check out marine terminology and sailing equipment * Explore Adventures and Solve Challenges * Use Keyboard or Game Controller Currently available vessels are * Laser - Olympic * Catalina 22 - Classic (Fin Keel) * Sabre Spirit 37 - (Fin Keel) Current Sailing Features * Keel Control * Keel vs Vessel velocity & mass effect * Boom Direction * Boom Jibe & Tack forces * Boom Vang Control * Main Sail Folding & Unfolding * Jib Folding & Unfolding * Jib Sheet tension & Winch Control * Spinnaker Control * Sail Reefing * Rudder vs Velocity control * Rudder & Turning circle based on vessel mass * Rudder reverse control * Engine Fuel Capacity and Refueling Systems * Outboard engine control * Outboard engine Prop Walk effect * Sail Drive Prop Walk effect * Dynamic Wind * Level Interaction * Drift effect vs Sail direction * Vessel Heel & Potential Capsize effects * Jib and Main Sail "Rudder Pull" when used separately * Wind dynamics based on vessel velocity and direction * Much more... SailSim applies actual physics to simulate the behavior of a sailing vessel. This means you can actually capsize or sink a vessel if you are not careful. In some cases the sailing simulator can even reproduce unpredictable results based on your actions, selected parameters and conditions. The visuals are meant not to be too serious where it doesn't matter as much (Environment in specific) but playful and fun. I spend a great deal of time on the physics of the simulator where a vessel can receive up to 30 or more forces dynamically at the same time, so the vessels are not just bumbling around but are actually getting the forces you would get in real life (mostly since nothing is perfect). Although by no means this should be considered as an exact replication of the actual sailing process, it does provide things you shall encounter when you step on any boat. If learning is not your thing, it is very addictive to just play with a sailboat and physics applied to it when the wind is howling outside and you have nothing better to do. Some controls and reactions of the sailing vessels in this simulator have been set intentionally in an awkward way and not as a typical Sailing Game would do it. This is done to try and replicate what you shall encounter when controlling a sailboat by yourself. I am having a blast developing this as an ongoing project. Spend lots of sleepless nights just because the specific environment or function is just too fun to stop making. Hopefully others will appreciate the work that is made by just one man on a small boat at sea :) * Make sure you update to the latest available version as i fix bugs and release fixes and new functions as i go. Please note that i designed the simulator with good graphics and physics in mind. Since i do not have the resources to check the simulator on older devices, if your device is older than 2 - 3 years, the simulator might not work properly. Unsupported older devices may manifest faults as broken texturing or in general the look of the simulator will not be as in the description screenshots. * If you find faults (bugs) not related to graphics but based on general behavior, please don't hesitate to mention it by sending me an E-mail and i should have it fixed in no time. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

OPYC4 screens
SailSim4 screens

Verdict

The call

The clearest difference is rating: SailSim at 3.4 against OPYC's 2.6. SailSim also leads on update cadence (every 8 days vs every 3 months) and review sentiment (38% vs 20%). OPYC's advantage is in-app purchases (none vs 12) and ads (none vs shown). On price, ratings volume 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. SailSim sells 12 in-app purchases, starting at $0.99 per month. OPYC asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SailSim holds the better App Store score, 3.4 against 2.6. Both are backed by a comparable volume of ratings — 8 and 22 respectively. Written reviews point the same way: 20% of OPYC's written reviews are positive against 38% of SailSim's.

UpkeepUpdate frequency

OPYC ships an update every 3 months, SailSim every 8 days. The most recent releases landed on June 1, 2026 and September 19, 2026 respectively.

Scorecard7 real differences · 3 level
OPYC versus SailSim: the parameters behind the verdict, then further details
ParameterOPYCSailSim
PriceFreeFree
Rating2.6 (8 ratings)3.4 (22 ratings) — better
Positive reviews20.0% of reviews38.5% of reviews — better
Number of ratings822 — better
Update frequencyEvery 3 monthsEvery 8 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size70 MB390 MB
Age rating4+4+
DeveloperOmar reisDimitris Rouslan Zavorotnitsienko

Customer experience

OPYC

All ratings8 ratings
Positive25.0%
Neutral37.5%
Negative37.5%
Written reviews5 reviews
Positive20.0%
Neutral20.0%
Negative60.0%

SailSim

All ratings22 ratings
Positive63.6%
Neutral0.0%
Negative36.4%
Written reviews13 reviews
Positive38.5%
Neutral0.0%
Negative61.5%

In-app purchases

None

OPYC

No in-app purchases

12 purchases

SailSim

Subscriptions1
  • SailSim Subscription$0.991 Month
One-time11
  • No Ads Today$0.29
  • SailSim 200xp$0.29
  • Extended Test Purchase$0.29
Show 8 more
  • Hints$0.29
  • Show Wind$0.29
  • Show Map$0.29
  • Boost Sails$0.29
  • Boost Engine Purchase$0.29
  • Flags$0.29
  • God Mode$1.99
  • SailSim Unlock$3.99

Questions

Is OPYC free?
OPYC is free to download, with no in-app purchases.
Is SailSim free?
SailSim is free to download, with in-app purchases available.
Which has better reviews, OPYC or SailSim?
SailSim is rated higher. OPYC averages 2.6 out of 5 from 8 ratings, while SailSim averages 3.4 from 22 ratings.
Do OPYC or SailSim have ads?
SailSim shows ads; OPYC does not.
Which is updated more often, OPYC or SailSim?
OPYC ships an update every 3 months, and SailSim every 8 days. Most recently, OPYC was updated on June 1, 2026 and SailSim on September 19, 2026.

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