Dev tools · alternatives · 2026
24 alternatives to Quantifying opportunity cost with a deliberately "simple" web app
Hi HN, A while ago I had a mildly depressing realization. Back in 2010, I had around $60k. Like a "responsible" person, I used it as a down payment on an apartment. Recently, out of curiosity, I calculated what would have happened if I had instead put that money into NVIDIA stock. I should probably add some context. For over 10 years I've worked as a developer on trading platforms and financial infrastructure. I made a rule for myself - never trade on the market. In 2015, when Bitcoin traded about 300 usd, my brother and I were talking about whether it was a bubble. He made a bold claim that…
Quantifying Opportunity Cost is a web application that calculates what would have happened if past financial decisions had been made differently. Users input a historical amount of money and an alternative investment… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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Calculate the opportunity cost of not buying bitcoin
2021 · bitcoinoripo.com · its alternatives →
- 2
2017 · github.com · its alternatives →
- 3IQ
Quick background: I used to code. Studied it in school, wrote some projects, but eventually convinced myself I wasn't cut out for it. Too slow, too many bugs, imposter syndrome — the usual story. So I pivoted, ended up as an investment associate at an early-stage angel fund, and haven't written real code in years. Fast forward to now. I'm a Buffett nerd — big believer in compound interest as a mental model for life. I run compound interest calculations constantly. Not because I need to, but because watching numbers grow over 30-40 years keeps me patient when markets get wild. It's basically…
Jan 2026 · calquio.com · its alternatives →
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2021 · github.com · its alternatives →
- 5
- 6
Hey HN! I built WhatIfInvest to make it easy to answer investing “what if” questions in an approachable way for both new and seasoned investors. With it you can simulate historical returns for stocks, ETFs, or crypto, backtest custom-weighted portfolios, visualize dollar-cost averaging strategies, and share results instantly with simple links Some examples you can try include seeing how Nvidia vs. Bitcoin performed over the last 10 years, how a classic 60/40 portfolio held up, or what dollar-cost averaging $100/month into SPY since 2010 would look like. I realize these comparisons…
2025 · whatifinvest.com · its alternatives →
- 7
What If Bitcoin?▲209Check how much you could have made by investing in bitcoin.
2017 · 99bitcoins.com · its alternatives →
- 8
The calculator you need if you’re raising money.
2019 · ledgy.com · its alternatives →
- 9
Calculate your regret for not investing in crypto sooner
2021 · fomocryptocalculator.com · its alternatives →
- 10SD
2022 · simulator.tryshare.app · its alternatives →
- 11
- 12TC
Made this using Power BI and the Crypto Watch API. Started making this in November 2021, but never got around to publishing it, so that is the reason for the 'FOMO' in the title - probably a good thing if you 'missed out' on the crypto hype late last year. Now it serves as a way to see how much you 'saved' by not putting in money. Hope someone finds it fun!
2022 · vidacode.github.io · its alternatives →
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Invest in algo-driven, automatically rebalanced portfolios built by quants. Congressional trades, AI stocks, leveraged strategies and more. Start with $50.
2021 · getquantbase.com · its alternatives →
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Calculates stock growth potential, shows users trade ideas
2021 · apps.apple.com · its alternatives →
- 15
I have 5% of crypto and want 65% of Bitcoin there. How?
2021 · github.com · its alternatives →
- 16
How much would you have if you invested in BTC earlier?
2017 · its alternatives →
- 17
DCA is a popular strategy that consists in saving/investing the same dollar amount (let's say $250 every month) in an asset. Here's a simple, easy to use, and verifiable (code is open source) calculator so that you can brag with your friends how your portfolio outperforms bitcoin (yes, I also wished I bought NVIDIA...)
2024 · bitcoinvsstocks.com · its alternatives →
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Instantly see the true Bitcoin cost behind every spend.
2025 · chromewebstore.google.com · its alternatives →
- 19FF
Hey HN, I'm Steve, co-founder of Factor.fyi, a new data platform for querying and visualizing financial datasets using SQL. During the pandemic, I took much more of an active role in managing my portfolio. I wanted to be able to make informed decisions about the investments I was making, and explore financial data in new ways. Market and Econ data are some of the most talked-about and widely-available datasets out there, but I was frustrated by the lack of options to answer questions I had, like, "What would have happened if I had started dollar-cost averaging VTI back in 2013?"[1] Or, "How…
2022 · factor.fyi · its alternatives →
- 20WU
hey y'all -- can you please tell us if our job search tool sucks? :D we built it using an investor platform called Harmonic.ai to gather startup data, then contextualize it so that job seekers could find out about the most exciting startups hiring first (like if they just raised, growing headcount fast, have an ex-unicorn founder, etc). pretty sure we're the first platform doing anything like this. anyway, let me know what you think. really excited to launch this thing soon! getting feedback from the hn community first is really fun :)
2022 · joinmaasive.com · its alternatives →
- 21SA
2015 · quantopian.com · its alternatives →
- 22
I built two tools designed specifically for traders — the Position Size Calculator and the Compounding Profit Calculator. The first helps traders determine their optimal position size based on risk tolerance, while the second visualizes account growth through realistic compounding projections, daily returns, and withdrawals. Both tools were created completely no-code, using only smart formulas and logic — proving that powerful, useful tools can be built without writing a single line of code.
2025 · quantify-ai.co · its alternatives →
- 23QF
Hi Y'all, for those interested in trading using quantitative finance ideas, I'm open sourcing the software I made in the past 10+ years along with a series of tutorials on YouTube which gradually introduce the concepts. It's work in progress, for now I covered the foundations (stock price movements, option valuation, the arbitrage idea and the replication technique). Next I'll introduce how to import historical market data for stocks and options along with where you can buy it for a reasonable price (you can't find free historical options data) and some basic cleanup techniques because it…
2024 · aquarianz.com · its alternatives →
- 24
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →