Comparison

SailboatData vs TetraScience

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

Head to head
About

SailboatData

Access a comprehensive database of production sailboat specifications offline. Compare models, search by detailed criteria, and save favorites with personal remarks. Ideal for buyers and marine professionals alike.

Highlights
  • Offline sailboat database access
  • Side-by-side model comparison
  • Search by detailed specifications
  • Save favorite sailboats and designers
  • Add personal remarks to models
  • Sync favorites and remarks via iCloud
Features
Read full description

The world’s most recognized database for production sailboat specifications. This is the must-have app for those looking to purchase a sailboat as well as for DIYers, sailmakers, yacht brokers, marinas, riggers, and all other marine professionals. Unlike our website, the app allows access to our database without the need for an internet connection. After downloading, you can experience the full app functionality for the first 2 hours. After that, continue on with the free basic version or subscribe to keep full access. This costs as little as a good coffee (for a yearly subscription, our cheapest option) and supports us adding more useful features and extend the database. The current features include: • Scrollable list containing over 9,200 sailboat models. • Side-by-side sailboat model compare. • Scrollable lists with all designers, builders, and associations. • The scrollable lists have an alphabetic index for quick access. • Each list has a name search bar which updates the list as you type. • Ability to select sailboats, designers, builders, and associations as your favorite. • Toggle button to quickly switch between showing all or only your favorites. • Ability to add your personal remarks for each sailboat model. • Favorites and remarks are shared between all your devices using Apple iCloud. • Refined search by LOA, LWL, Hull type, Keel type, Displacement, Beam, Draft, Rig type, Years Built and all our Ratios. • Ability to sort the refined search results on any of the search parameters. • Settings to personalize displayed units and other features. As you scroll through the sailboat list and look at sailboat and designer details, the corresponding images are downloaded via internet. Once an image has been downloaded it is stored on your device; the maximum storage used is about 500MB.

About

TetraScience

Features
Read full description

The TetraScience mobile application to support you on weighing process.

Screenshots

SailboatData4 screens
TetraScience2 screens

Verdict

The call

The clearest difference is in-app purchases: TetraScience at none against SailboatData's 4. TetraScience also leads on update cadence (every 9 days vs every 4 weeks) and iOS requirement (13.4 vs 15.5). On price, ads 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. SailboatData sells 4 in-app purchases, starting at $0.99 per month. TetraScience asks for nothing beyond the download.

UpkeepUpdate frequency

SailboatData ships an update every 4 weeks, TetraScience every 9 days. The most recent releases landed on September 24, 2026 and May 17, 2026 respectively.

Scorecard3 real differences · 7 level
SailboatData versus TetraScience: the parameters behind the verdict, then further details
ParameterSailboatDataTetraScience
PriceFreeFree
Rating4.8 (293 ratings) — better—
Positive reviews88.9% of reviews—
Number of ratings293 — better—
Update frequencyEvery 4 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.513.4 — better
Further details — not scored
Size20 MB105 MB
Age rating4+4+
DeveloperVMG Media, LLCTetraScience Inc.

In-app purchases

4 purchases

SailboatData

Subscriptions4
  • 1 Monthly Access$0.991 Month
  • 3 Monthly Access$1.993 Months
  • 6 Monthly Access$2.996 Months
Show 1 more
  • 12 Monthly Access$3.991 Year
None

TetraScience

No in-app purchases

Questions

Is SailboatData free?
SailboatData is free to download, with in-app purchases available.
Is TetraScience free?
TetraScience is free to download, with no in-app purchases.
Do SailboatData or TetraScience have ads?
Neither SailboatData nor TetraScience shows ads.
Which is updated more often, SailboatData or TetraScience?
SailboatData ships an update every 4 weeks, and TetraScience every 9 days. Most recently, SailboatData was updated on September 24, 2026 and TetraScience on May 17, 2026.

Other comparisons