Exprex Agent vs Sail Assist
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Exprex Agent
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Permet aux livreurs d'Exprex de recevoir les demandes de pick-up/livraisons ainsi que leurs permettrent de mieux gérér leurs destinations.
Sail Assist
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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
Verdict
Exprex Agent and Sail Assist are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
Exprex Agent ships an update every 6 months, Sail Assist every 4 months. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.
| Parameter | Exprex Agent | Sail Assist |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 99 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Exprex inc. | Japan Radio Co.,Ltd. |
In-app purchases
Exprex Agent
No in-app purchases
Sail Assist
No in-app purchases








