Comparison

Class surveyor vs Sail Assist

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

Head to head
About

Class surveyor

Features
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Class surveyor - it's our new assistant app for surveyors, shipowners, UTM operators. Depending of ship age and type - our app will privide you scope of ship inspections and thickness measurements in accordance with IACS Requrements. App include LSA Code and SOLAS requirements for liferafts and lifeboats. Try to use our free app in your marine duties - it will help you!

About

Sail Assist

Features
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◆ Fuel Switching Before ship enter Emission Control Area (ECA), it notifies you at the timing set by you. You can do fuel switching task with plenty of time to spare. The notifications are before you do fuel switching, when you start fuel switching, and when you should end fuel switching. It will also notify Smart Ship Viewer (SSV) and SSV Mobile that the fuel switching has been done. ◆ NGA notification Users can set up No-Go Areas (NGA) in advance and be notified when they enter the NGA. ◆ Chat communication You can chat with Sail Assist users on the same boat or SSV Mobile users. You can also send photos and images. In the event of an emergency, you can switch to warning mode and notify chat group members. ◆ Alert Notification This app notifies you of emergencies, off-course incidents from the planned route, and BAM alert occurring onboard the ship. ◆ Display for Alert History In case of emergencies or off-course incidents from the planned route, get notifications of the situation. ◆ Marine Equipment Manual Display ECDIS, VDR, etc. equipment manual. 【Notes】 ・This app requires SSV contract. ・This app requires either J-Marine NeCST, J-Marine Box, or VDR from JRC installed on the vessel.

Screenshots

Class surveyor4 screens
Sail Assist4 screens

Verdict

The call

The clearest difference is iOS requirement: Class surveyor at 11.0 against Sail Assist's 16.4. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Class surveyor ships an update every 7 months, Sail Assist every 4 months. The most recent releases landed on October 10, 2026 and October 9, 2026 respectively.

Scorecard1 real difference · 5 level
Class surveyor versus Sail Assist: the parameters behind the verdict, then further details
ParameterClass surveyorSail Assist
PriceFreeFree
Update frequencyEvery 7 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better16.4
Further details — not scored
Size58 MB25 MB
Age rating4+4+
DeveloperOLEKSANDR IZERGINJapan Radio Co.,Ltd.

In-app purchases

None

Class surveyor

No in-app purchases

None

Sail Assist

No in-app purchases

Questions

Is Class surveyor free?
Class surveyor is free to download, with no in-app purchases.
Is Sail Assist free?
Sail Assist is free to download, with no in-app purchases.
Do Class surveyor or Sail Assist have ads?
Neither Class surveyor nor Sail Assist shows ads.
Which is updated more often, Class surveyor or Sail Assist?
Class surveyor ships an update every 7 months, and Sail Assist every 4 months. Most recently, Class surveyor was updated on October 10, 2026 and Sail Assist on October 9, 2026.

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