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The top-performing apps on VibbleLaunch, ranked in real-time.

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Day Skipper Theory

Master the theory. Take the helm.

dayskippertheory.co.uk

sailingryadayskipperCursorNext.js

170A2026-03-18

Compass Revision Network

Independent low-cost revision tools for RYA theory, navigation, and marine radio, including Day Skipper, Coastal Skipper

compassrevision.com

CursorChatGPT

992.0%A+2026-07-14

CalculatorQueen Milliwatt Calculator

Convert milliwatts and watts both ways with SI formulas, a scale chart, and CSV.

calculatorqueen.com

milliwatt calculatormw to welectrical powerNext.jsReact

562026-08-15

CalculatorQueen Centimeters to Millimeters Calculator

Convert centimeters and millimeters both ways using the exact metric factor.

calculatorqueen.com

cm to mmmetric converterlength conversionNext.jsReact

48B2026-08-15

PersonaHaven

Free tools for personality, relationships, career fit and practical self-reflection

personahaven.com

personality testsself reflectioncareer fitReactVercel

472.1%A2026-08-17

∞

CalculatorQueen Infinity Trick Lab

Test large powers and division-by-zero inputs while separating overflow, error, and infinity.

calculatorqueen.com

infinitycalculator behaviordivision by zeroNext.jsReact

27B2026-08-27

⚗️

CalculatorQueen AP Chemistry Score Calculator

Combine 60 MCQ results and seven FRQ rubric scores into a transparent 50/50 practice composite.

calculatorqueen.com

ap chemistrypractice scoremcqNext.jsReact

26B2026-08-27

🧬

CalculatorQueen AP Biology Score Calculator

Combine AP Biology practice component percentages with published weights into a 0–100 composite.

calculatorqueen.com

ap biologypractice compositemcq and frqNext.jsReact

26B2026-08-27

✍️

CalculatorQueen AP Lang Score Calculator

Audit the 45/55 AP Lang practice composite and compare dated, nonofficial planning models.

calculatorqueen.com

ap langessay rubricpractice compositeNext.jsReact

25B2026-08-27

StudyEaseHaven

Turn webpage and PDF highlights into structured study notes automatically.

studyeasehaven.ca

educationproductivitystudy notes

182026-08-25

👶

Best Dad

A free, practical baby guide made by a new dad

apps.apple.com

parentingnew dadsbaby care

122026-08-28