LotofTools
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LotofTools is a growing collection of free online calculators and tools built for startup founders, marketers, and developers. Every tool runs entirely in your browser -no data leaves your device, no account needed, no ads.
Unlike typical online calculators that give you one number after clicking "Submit," LotofTools provides real-time, interactive experiences. Move a slider and watch your charts, grades, and projections update instantly. The tools are designed to help you think, not just compute.
For Startup Founders: Model your burn rate and runway with live cash trajectory charts. Simulate VC funding rounds and see exactly how dilution compounds through your cap table. Calculate your K-factor virality and benchmark it against products like Dropbox, Slack, and WhatsApp. Project MRR growth, analyze LTV:CAC ratios, and grade your SaaS metrics with A-F report cards.
For Marketers: Forecast SEO traffic and revenue from keyword rankings over 12-24 months. Compare 6 attribution models side by side to understand which channels actually drive conversions.
What makes it different: - Results update as you type - no waiting, no page reloads - Every tool includes interactive charts, not just raw numbers - Export results as PNG reports, CSV data, or shareable URLs with your exact inputs preserved - Scenario comparison lets you save and compare different strategies - Exec Deck mode turns your data into presentation-ready slides for investor meetings - Industry benchmarks show where you stand against averages in your sector
All tools run as static pages - they load fast and work offline. Your data stays on your machine. Nothing is tracked, stored, or sent anywhere.
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LotofTools's answer
LotofTools is a free collection of 1000+ instant online tools -all running 100% client-side in the browser with no signups, no data collection, and no backend processing.
Key differentiators:
LotofTools's answer
Most online tool sites feel like they were built in 2010 -ad-heavy, slow, ugly, and requiring you to click "Calculate" every time. LotofTools is a modern alternative built for how people actually work today:
LotofTools's answer
Startup founders, digital marketers, and developers who need quick, reliable online tools without the friction of signups, ads, or sending their data to a server. Secondary audiences include students, freelancers, and anyone who regularly Googles "X calculator" or "Y converter" and wants a faster, cleaner experience.
LotofTools's answer
It started when I Googled "percentage calculator" for the 500th time and landed on a site that looked like it was designed during the dial-up era -complete with 3 pop-up ads and a "Calculate" button that took 4 seconds to load a single number. I thought: "There's no way it should be this painful to divide two numbers." So I built one clean tool. Then another. Then I couldn't stop. Now im planning to cover 1000+ tools and counting - basically my revenge against every ugly, ad-infested calculator site that ever wasted my time.
LotofTools's answer
Next.js, React, TypeScript, Tailwind CSS, and Chart.js. All tools run 100% client-side in the browser - no backend, no database, no server-side processing.
LotofTools's answer
LotofTools is a free, open-access product - we don't have traditional "customers" with contracts. Our users are thousands of individual founders, marketers, developers, and students who discover our tools organically through Google search every day. We're built for the long tail - the person who Googles "burn rate calculator" at 2 AM before their board meeting.
Based on our record, Cryptomator seems to be more popular. It has been mentiond 303 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
> I dislike Dropbox for reasons that aren't technical, but the big thing for me is that I want either E2EE, or control/ownership of where my data is stored. You could run something like Cryptomator on top of Dropbox: https://cryptomator.org/ It even has (paid) iOS and Android apps for mobile access. - Source: Hacker News / 5 months ago
This is Nice. However, how do one access their diary, when you stopped maintaining it? Is this targeted more at the technically inclined, high-profile people who need to keep secrets? Personally, I believe that for something like a diary/journal, it should be in a format easily readable by most tools (so a Plain-Text or a MarkDown at best), then it is in a container/folder. Now, encrypt that container/folder... - Source: Hacker News / 6 months ago
If you still want/need cloud storage, but don't want to roll your own (with the warts that brings), Cryptomator is an excellent tool for source encrypting your data before uploading them. It works transparently, and has clients for Mac/Windows as well as iOS/Android. It's also open source, and "free" (IIRC there's a one time fee for the mobile client). https://cryptomator.org/. - Source: Hacker News / 10 months ago
- Syncthing (https://syncthing.net/) to keep the files synchronized between desktops and laptops computers - Webdav (https://github.com/hacdias/webdav) to access the files on the server via other applications - Cryptomator (https://cryptomator.org/) to crypt/decrypt sensible directories. - Source: Hacker News / 10 months ago
While I get the whole homelab thing is exiting and a great learning experience, it's simply not worth the time and effort for the majority of people. You will end up paying much more for your services, along with spending a ton of time maintaining it (and if you don't, you will probably find yourself on the end of a 0-day hack sometime). In Northern/Western Europe, where power costs around €0.3/kWh on average,... - Source: Hacker News / about 1 year ago
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