SailViewer Timer vs SailSizeCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SailViewer Timer
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Sailing timer. Speaks time to start. Also can show start line data if line is pinged.
SailSizeCalc
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SailSizeCalc allows users to visualize and calculate sail area using specific sailboat dimensions. Whether you're testing a new sail setup, or just curious about the efficiency of your rig, SailSizeCalc is a pocket sail calculator to give you prompt results.
Screenshots
Verdict
The clearest difference is update cadence: SailSizeCalc at daily against SailViewer Timer's every 10 days. 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 Timer ships an update every 10 days, SailSizeCalc daily. The most recent releases landed on September 30, 2026 and October 10, 2026 respectively.
| Parameter | SailViewer Timer | SailSizeCalc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.2 — better | 17.6 |
| Further details — not scored | ||
| Size | 1 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Master Sailing jdoo | Rick Mc |
In-app purchases
SailViewer Timer
No in-app purchases
SailSizeCalc
No in-app purchases
Questions
Is SailViewer Timer free?
Is SailSizeCalc free?
Do SailViewer Timer or SailSizeCalc have ads?
Which is updated more often, SailViewer Timer or SailSizeCalc?
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