MatrixCalcu.com

Reviewed matches are labeled. Other suggestions come from a shared subcategory, use case, source listing or the same category. Compare features and current plans before choosing.

Product
DerivativeCalculator.io Free online derivative calculator with step-by-step solutions for calculus problems. Calculate derivatives, limits, integrals, and solve equations instantly.
calculator.net Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
Calculator N+ calculate anything, anytime, anywhere... Free online calculators for everything. Some solve problems, some satisfy curiosity and some simply for fun.
Calculatorica 1,000+ free online calculators for math, finance, health, science, construction, and everyday use. Includes formulas, worked examples, and educational content — no sign-up needed.
Desmos Rhythmic Graph
calculatorwebtools.com Use free online calculators for finance, students, math, unit conversions, engineering, scientific calculations, grades, loans, percentages, fractions, and everyday problem solving.
Calculators.org Learn Math, Have Fun
Scientific Calculator Scientific Calculator is one of the advanced online JavaScript-based scientific calculators, making you perform all the complex calculations by clicking the button like the physical Calculator.

Selected by category and available use-case details. A topic match does not establish equivalent features.

Product
WISHUPON WISHUPON – A Universal Shopping Wishlist app comes up with features to help you in adding your favorite items to a wish list to receive notification alerts about the latest sales.
Cookii AI to create recipe based
TravelMint Travel, startup
Mindtrip AI platform for travel, personalized to you
Quantified.ai The AI-Driven Flight Simulator for Sellers
AboutLastNight.lol QR code photo sharing for weddings, parties, and events. Guests scan to snap and share instantly, no app download required.

Added to this directory in the past 30 days. Dates refer to the directory listing, not the product launch.

Product
GearGenius Car maintenance tracker with a health score and an AI guide
Reply or Run Your brutally honest AI dating assistant
Bharat Travels Chandigarh Premier Tempo Traveller in Chandigarh – Bharat Travels
The Dev Summary Daily tech news curated for developers & engineers

Profiles grouped by topic. This does not confirm an offer, availability or a connection to this profile.

Profile
Theo Baschak :verified: IT consultant.
Christopher Isene Dad.
Pettsy Politically homeless.

Shows and channels grouped by topic. A recommendation does not mean this profile was featured or endorsed.

Show
The Food Startups Podcast Podcast · Hema Reddy
Food Founders Interviews Podcast · Froghop
Macpreneur: Helping Solopreneurs Streamline Their Businesses on a Mac Podcast · Damien Schreurs, Technology Mentor

Retold founder accounts from startups in the same category, each linked to the original.

Story
Beardbrand’s YouTube habit started before the store, not at a million subscribers Eric Bandholz says Beardbrand began as a 2012 blog and YouTube community, that a New York Times reporter triggered a rushed Shopify store in January 2013, and that YouTube became a primary teaching channel well before la
Magai's 163-day $20,000 MRR is not the later million in lifetime sales Dustin Stout's October 2023 Indie Hackers interview leads with Magai at $20,000 a month after 163 days; his August 2025 essay later reports $1 million in lifetime sales and nearly $100,000 MRR, which this record keeps ap
Frederic Lalonde called Hopper's pivot scary and still followed the Times traffic Frederic Lalonde says Hopper's travel-blog aggregator failed the expectation of the money raised, then a New York Times story sent more than a million visitors in three weeks to a PDF that was never meant for travellers,
Michael Cameron treated Rome2rio's sale as a product finished, not a price named Michael Cameron says he and Bernie Tschirren sold Rome2rio to Omio after they felt the product was built, because growing the company needed a different skill set, then spent 2020 mentoring at Startmate when COVID cancel

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