Comparison

BOISW vs Sail Scan

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

Head to head
About

BOISW

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The official mobile app of the CRC Bay of Islands Sailing Week. This is the biggest regatta of its kind in New Zealand, and one of the Southern Hemisphere's premier yachting events, attracting entries from around New Zealand and overseas. The next edition of this much-loved event will take place from Tuesday 21 to Friday 24 January, 2020.

About

Sail Scan

Features
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SailScan is currently in beta. SailScan turns your iPhone into a sail shape analyzer. SailScan's computer vision reads the trim stripes to measure what your eyes can't quantify. Measurements include: • CAMBER DEPTH — how much shape you're carrying, stripe by stripe • DRAFT POSITION — where the depth sits, front to back • TWIST — how the top opens relative to the boom SailScan works on mainsails and jibs, from small one-design boats to grand prix racers and superyachts. Make real-time adjustments, save your scans, build your library, and start connecting your rig settings to increase speed and progress on the water. WHY IT MATTERS Good trimmers develop an eye over decades. SailScan gives you the numbers behind that eye—so you can repeat fast settings, compare tack to tack, and debrief with data instead of memory. HOW IT WORKS 1. Photograph your sail (main or jib) from below 2. SailScan detects the stripes and calculates shape metrics 3. Review, adjust, and save your scans 4. Compare scans across the day—track every setting change BUILT BY SAILORS SailScan was built by people who race and trim for a living. Join us!

Screenshots

BOISW4 screens
Sail Scan4 screens

Verdict

The call

The clearest difference is update cadence: Sail Scan at daily against BOISW's every 8 months. BOISW's advantage is iOS requirement (12.0 vs 15.1). 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

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

BOISW ships an update every 8 months, Sail Scan daily. The most recent releases landed on September 22, 2026 and September 11, 2026 respectively.

Scorecard2 real differences · 4 level
BOISW versus Sail Scan: the parameters behind the verdict, then further details
ParameterBOISWSail Scan
PriceFreeFree
Update frequencyEvery 8 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better15.1
Further details — not scored
Size83 MB30 MB
Age rating4+4+
DeveloperYachting New ZealandNate McGuire

In-app purchases

None

BOISW

No in-app purchases

None

Sail Scan

No in-app purchases

Questions

Is BOISW free?
BOISW is free to download, with no in-app purchases.
Is Sail Scan free?
Sail Scan is free to download, with no in-app purchases.
Do BOISW or Sail Scan have ads?
Neither BOISW nor Sail Scan shows ads.
Which is updated more often, BOISW or Sail Scan?
BOISW ships an update every 8 months, and Sail Scan daily. Most recently, BOISW was updated on September 22, 2026 and Sail Scan on September 11, 2026.

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