57 free, no-signup tools across 13 verticals in the DeepSynthesis network. Calculators and utilities for finance, tax, prescriptions, pets, education, creators, and go-to-market. No login, no paywall, no data capture required to use them.
BagEngine 4
Amazon Break-Even Calculator: Free for 2026Find exactly how many units to sell before you profit. Includes profit curve chart, scenario comparison, and time-to-profitability estimate. Free, no login.
FBA Profit Calculator: Free, Updated for 2026Calculate true profit per unit with 2026 FBA fees, referral fees by category, PPC costs, storage, and returns. Free, no login, instant results.
Quarterly Tax Deadlines: Live Countdown (2026)Next quarterly tax deadline with live countdown timer, penalty calculator, and direct IRS payment links. Never miss a payment. Free for freelancers.
S-Corp Calculator: Is It Worth It? (2026)Free S-Corp readiness calculator with real compliance costs most tools skip. Break-even at ~$75K net profit. See your actual savings before you elect.
Self-Employed Tax Leak Audit: Are You Overpaying the IRS? (2026)Enter your business profit and see, in dollars, exactly how much you are likely overpaying the IRS by skipping the S-corp election, a retirement shelter, the home-office deduction, and the self-employed health-insurance write-off. Ranked by impact.
Tax Set-Aside Calculator for Freelancers (2026)Instantly see how much to save for federal, state, and self-employment taxes. Enter income, get your exact set-aside percentage. Updated for 2026 brackets.
Ergonomic Setup Score: Rate Your Home Office (0-100)Score your home office ergonomics across 7 dimensions: desk height, chair, monitor, keyboard, mouse, lighting, posture. Get prioritized fixes with product recommendations.
Home Office Tax Deduction Calculator (50-state)State-aware home office tax deduction estimator. Federal Form 8829 mechanics + per-state conformity quirks across all 50 states. For self-employed and qualifying W-2 cases.
Standing Desk Health-ROI Estimator: What You Actually GetThe honest standing desk benefit calculator. Built on a 142-claim audit of 30 brands matched to Cochrane + PubMed evidence. Shows what's supported, what's not, and what the brands won't tell you.
The Chair Tax: How Many Years Your Desk Job Costs You (2026 Calculator)Enter your daily sitting hours and age to see the peer-reviewed life-expectancy cost of a desk job, in years and minutes per hour seated, plus how much exercise refunds it. Based on Veerman 2012, Katzmarzyk 2012, Ekelund 2016.
Font ID by Film, FilmFontA searchable database of famous films and the fonts used in their title cards, posters, and key art. Identifications triangulated from Fonts In Use, designer interviews, and frame analysis.
Font Licensing Calculator, FilmFontPick a font tier and a usage scenario. Estimate licensing cost across MyFonts, Adobe Fonts, Creative Market, and Monotype, plus the litigation risk for the wrong choice.
grantprobe 1
Federal Grant Map: Search 60,000+ Grants (2026)60,000+ federal grants on one interactive map. Filter by agency, category, amount, and deadline. Free Grants.gov data for nonprofits and businesses. Updated 2026.
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AI GTM Stack Builder 2026: Cost by Team Size & Tools -- LucreyaFree calculator. Pick the GTM surfaces you run (content, SEO, GEO tracking, prospecting, cold email, AI SDR), set your team size, and get three costed stacks (lean, standard, enterprise) from 30 verified 2026 tool prices, with credit-overage and per-seat warnings.
AI GTM Tool Pricing Tracker 2026: 30 Verified Prices -- LucreyaVerified 2026 entry prices for 30 AI go-to-market tools across marketing, SEO and GEO, and sales. Filter by category, sort by price, and see the pricing model (per-seat, credits, or quote) for each. Verified June 2026, CC-BY.
Prompt Compiler: Turn Messy AI Prompts into Repeatable BrainsFree tool. Paste a raw AI prompt, pick a brain shape, get back a structured prompt artifact with role, context, task, constraints, and output spec. Works for ChatGPT, Claude, Gemini, and any LLM.
Video Script Length to Watch-Time EstimatorEstimate watch time and retention from your video script length, delivery pace, and niche. Built on YouTube's documented retention curves.
YouTube CPM Calculator 2026: Real Revenue by NicheEstimate your YouTube ad revenue from real CPM data across 30 niches. Sourced from 142 named-creator income disclosures and industry rate cards (CC-BY-4.0).
YouTube Thumbnail CTR Estimator: Heuristic ScoreHeuristic CTR estimator for YouTube thumbnails based on 8 design dimensions correlated with above-average CTR. Honest framing: heuristic only, no real CTR oracle exists.
YouTube Title Scorer: CTR + SEO Heuristic ScoreLive YouTube title scorer that grades length, SERP truncation, curiosity gap, keyword fit, and pattern strength. Heuristic only; honest framing about what title scoring can and cannot predict.
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AI Stack Optimizer: Pick the Right $20-$100 Monthly ComboFree tool. Pick your AI use cases, get three optimized subscription stacks at different price points ($20 minimal, $35 balanced, $80 power). Real pricing, real gaps, no hype.
Free Crypto Tax Calculator: FIFO vs HIFO (2026)Free crypto tax calculator. Compare FIFO, LIFO, and HIFO side by side to find which method saves you the most. No signup, runs in your browser with 2026 IRS rates.
Prompt Compiler: Turn Messy AI Prompts into Repeatable BrainsFree tool. Paste a raw AI prompt, pick a brain shape, get back a structured prompt artifact with role, context, task, constraints, and output spec. Works for ChatGPT, Claude, Gemini, and any LLM.
OmniRx 2
FDA Drug Safety Explorer: Adverse Event Data (2026)Explore FDA adverse event reports for any medication. Side effects by frequency, severity, demographics, and trends. Compare 2 drugs side by side. Free tool.
OmniRx Tools , Free, no loginDrug interaction checker, FDA safety explorer, PAP finder, formulary lookup. All free, all private.
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Dog Breed Health Atlas: 50+ Breed Guides (2026)Free health guides for 50+ dog breeds. Conditions, symptoms, preventive care by age, and supplement picks. Compare breeds side by side. Updated April 2026.
Dog Supplement Stack Builder: Free Planner (2026)Build a personalized supplement stack for your dog in 60 seconds. Get dosages, daily cost estimates, and interaction alerts. Free tool, updated April 2026.
Log Your Pet's Supplement ResultsTrack and share your pet's supplement results. See what works for other pets. Crowdsourced data from real pet owners.
Pet Prescription Savings Calculator, PetmaxxingCompare pet medication prices across Walmart, Costco, Amazon Pharmacy, and Cost Plus Drugs. Find out how much you can save filling your pet's prescriptions at human pharmacies.
Prescription Savings Finder: The Cheapest Way to Fill Any Drug (2026)Enter your medication and see every legitimate savings path ranked by real cost: Walmart $4, Cost Plus Drugs, GoodRx/SingleCare, manufacturer cards, and compounded telehealth for GLP-1. Researched price ranges, ranked by price, never by commission.
Report a Pharmacy Price: Help Others Save (2026)Submit your prescription prices anonymously to help others find cheaper pharmacies. No account needed. Crowdsourced drug price data updated daily.