
Create iOS and Android apps with React and Ionic

TradingView
Coinigy
GoCharting
TradesViz
Investing.com
Ninjatrader
NVSTly
Free, instant trading calculators across options, forex, risk and statistics, prediction markets, on-chain safety, and crypto futures with live prices from 17 exchanges, plus a free API & MCP server for AI agents. No signup.

Which is more popular?
Based on our record, TradingCalc seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | reactionic.github.io | tradingcalc.io |
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| Company | — | Startup from the United Arab Emirates · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of React-Ionic yet.
A free set of deterministic trading calculators. Options: Black-Scholes price and Greeks, payoff and breakeven, implied volatility. Forex: position size, pip value, margin, swap and correlation. Risk: Sharpe ratio, VaR and a portfolio tearsheet. Crypto perpetual futures: PnL, liquidation price,...
What each product offers, as listed by its team.


Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing React-Ionic and TradingCalc.
TradingCalc's answer:
Every result is deterministic: the same inputs always give the same numbers. The calculators are also exposed as an MCP server and a REST API, and each MCP result is cryptographically signed (ECDSA P-256), so an AI agent or a trading bot can check that the numbers came from the formulas and were not altered. The core calculators are checked against public test vectors on a live page (/verify).
TradingCalc's answer:
It is free, needs no signup, and returns exact numbers from published formulas instead of estimates. The same tools work in the browser, over REST and over MCP, so a trader and an AI agent get identical answers. It covers options, forex, risk statistics and crypto perpetual futures in one place, including coin-margined contracts.
TradingCalc's answer:
Developers building AI agents and trading bots who need verifiable numbers from a tool call, and traders who want fast, exact calculations for options, forex and crypto futures without creating an account.
TradingCalc's answer:
Next.js (App Router), TypeScript, PostgreSQL with Prisma, Redis, Vercel, and the Model Context Protocol (MCP) for agent access.
Share your experience with using React-Ionic and TradingCalc. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking React-Ionic since Mar 2021.
I started TradingCalc because of friend of mine. He was trying to trade via AI chat (wouldn't open which LLЬ exactly for a reason). The problem has been to verify the numbers and source of truth. I didn't have the answer for him either.... - Source: Hacker News / about 4 hours ago
I saw a friend working out his trade positions in a chat, and I asked him how he could be sure the number was right when he couldn't check it himself and didn't know which formula was used. I didn't really have an answer for him either,... - Source: Hacker News / about 4 hours ago