SailViewer vs Pocket Sail
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SailViewer
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SailViewer turns sailing GPS and instrument logs into an interactive debrief on iPhone and iPad. Import a supported sailing file, choose the logs you want to open, and explore the race from several angles: • Track views with boats, courses, selections, and optional map backgrounds • Tables and graphs for comparing selected values • Polar analysis for speed and angle relationships • Start, Race, Boat, and Maneuvers views when supported by the data • Local image sharing from supported analysis windows SailViewer includes synthetic sample logs. Samples start closed, so you decide when to open them. You can import SW2, SLV, GPX, KML, NMEA, VTK, FIT, VKX, supported CSV sources, and supported ZIP archives. Your imported sailing files stay on your device unless you explicitly share them. Ordinary iPhones, including large iPhones, have permanently free local access and do not require weekly license checks. All iPads, including iPad mini, and this iPad app running on an Apple-silicon Mac are free through 31 December 2026. These devices require an internet connection for initial activation and at least once every seven days. Free access ends on 1 January 2027 at 00:00 UTC, when a paid subscription will be required. Purchasing will require a future app update; this release cannot take payments. There is no automatic charge. If access expires, your local library is retained. Optional error reports and usage summaries are off by default. Support reports are sent only when you choose to send them, and original sailing logs are not attached automatically. This is the new SailViewer app and is separate from the legacy SailViewer/TruSailViewer product. Automatic transfer from the legacy app is not promised; keep your original files and import supported formats into this app.
Pocket Sail
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Pocket Sail is a simulator that puts the experience of yacht sailing in the palm of your hand. It's designed to help beginners learn the fundamentals—and it works even better alongside a coach or an experienced sailor. Wind direction and its relationship with the telltales, wind indicator, and sail; the heel of the boat; tacking and gybing—practice the sensations of real dinghy sailing anytime, anywhere. Features - Realistic sailing physics with telltales and a wind indicator - Master boat handling by tacking and gybing again and again - Record your run as a "ghost" and race it on your next lap - Both portrait and landscape support - No sign-up, fully offline Sharpen your feel for sailing with Pocket Sail.
Screenshots
Verdict
The clearest difference is update cadence: SailViewer at every 2 weeks against Pocket Sail's every 4 weeks. On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SailViewer ships an update every 2 weeks, Pocket Sail every 4 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.
| Parameter | SailViewer | Pocket Sail |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 51 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Master Sailing jdoo | Natsuki Matsuura |
In-app purchases
SailViewer
No in-app purchases
Pocket Sail
No in-app purchases
Questions
Is SailViewer free?
Is Pocket Sail free?
Do SailViewer or Pocket Sail have ads?
Which is updated more often, SailViewer or Pocket Sail?
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