
WolframAlpha
SpeedCrunch
Qalculate!
Numi App
Wolfram Mathematica
Symbolab
Soulver
fxSolver is an free online math solver, equation library, graphing calculator and science/engineering problem helper. To get started, add some formulas, fill in any input variables and press "Solve."

BitPay
CoinGate
CoinPayments
Coinbase
Whitepay
BTCPay Server
Cryptomus
NOWPayments is a crypto payment gateway that supports more than 300 cryptocurrencies, including fiat, and offers simple tools to accept crypto payments, like a crypto payments API, plugins, invoices.

Which is more popular?
Based on our record, NOWPayments seems to be more popular. It has been mentioned 67 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | fxsolver.com | nowpayments.io |
| Pricing | — | |
| Platforms | — | |
| Company | — | 2019 |
| Listed in |
In their own words, as submitted to SaaSHub.


Calculate multiple equations at once, Edit existing formulas and Create new ones, Compute large numbers of values, Plot graphs, Link your results, Solve full problems and Share worksheets with your friends. fxSolver is a free tool developed by a team of engineers and programmers with the sole...
NOWPayments is a crypto payment gateway that lets all types of businesses accept payments in 300+ cryptocurrencies, with auto coin conversion and fiat conversion available. Pricing: 0,5% transaction fee + 0,5% exchange fee if exchange is needed. The platform also supports fiat conversion:...
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
NOWPayments is highly recommended for online businesses, e-commerce platforms, and any merchants looking to expand their payment options to include cryptocurrencies. It is especially beneficial for those who value security, seek to reach a global customer base, and want to offer flexible payment choices.
Walkthroughs and reviews on video.
fxSolver Demo
What is NOWPayments
More videos
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing fxSolver and NOWPayments.
NOWPayments's answer:
300+ currencies, cross-chain payments, fiat on-ramp and off-ramp. Multiple crypto payment tools, custom solutions for various industries.
NOWPayments's answer:
NOWPayments's answer:
Businesses and individuals that would like to accept crypto
NOWPayments's answer:
For example, Travala crypto travel platform
Share your experience with using fxSolver and NOWPayments. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


In the ever-evolving landscape of digital transactions, choosing the right payment gateway is paramount for businesses aiming to leverage the power of cryptocurrencies. As the market matures, demands for reliability,...
NowPayments is a well-known crypto payment gateway established by ChangeNow, one of the top crypto swapping sites, in 2019. The platform offers low transaction fees and also offers non-custodial services for users who...
Recommendations tracked on public social media and blogs since March 2021.


Tracking fxSolver since Mar 2021.
I looked at this for my business as well, I ended up using crypto.com which to date nobody has used and https://nowpayments.io/ which many people have used. Source: almost 3 years ago
Https://nowpayments.io/ Have a store and want to accept crypto such as HOGE? NowPayments has you covered. Source: about 3 years ago
It's looking like PowerCity's PixelPark is trying to beat Mintra to market as the first major NFT Marketplace soon on PulseChain as they have partnered with NowPayments.io to handle their payment processing:. Source: over 3 years ago
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Bitcoin payment gateway. Enterprise-grade solutions, from the pioneer of bitcoin payments.
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SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .
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CoinGate is a payment gateway for Bitcoin, XRP, Litecoin, Ethereum and 50 other cryptocurrencies.
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Qalculate! is a multiplatform multi-purpose desktop calculator.
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Payment gateway providing buy now buttons, shopping carts, and more to accept Bitcoin, Litecoin, and other cryptocurrencies/altcoins on your website/online store.
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