
StartupSubmit.app
SubmitWell
Submit Juice
AI Directories
Domain Rank App
Submit.co
SubmitSaaS
See which product directories and launch platforms are worth submitting to, using monthly refreshed traffic, DR, pricing, link, and difficulty signals.

WolframAlpha
SpeedCrunch
Qalculate!
Numi App
Soulver
Symbolab
Wolfram Mathematica
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."

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | submitrank.com | fxsolver.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from China · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


🚀 SubmitRank helps founders, marketers, and indie makers find the best sites to submit their product. It ranks directories, launch platforms, communities, and product discovery sites by traffic, authority, pricing, submission fit, and freshness. 🔎 You can quickly spot which sites are worth your...
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...
What each product offers, as listed by its team.


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


No analysis of SubmitRank yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
You Shipped Your Product—Now Where Should You Submit It?
fxSolver Demo
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing SubmitRank and fxSolver.
SubmitRank's answer
Indie Developers, founders, and marketers
SubmitRank's answer
I'm so tired of managing my backlink sites list manually, so I built SubmitRank
SubmitRank's answer
It tracks and ranks 400+ submission-friendly websites around the world, organizing them by score, tier, category, and practical submission value.
SubmitRank's answer
SubmitRank is working on a user feedback platform where people can review, comment on, and share their real submission experiences, making the directory more transparent and useful over time.
Share your experience with using SubmitRank and fxSolver. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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Get your startup submitted to 500+ quality directories starting at $25. Plus check your Domain Authority score with our free DA checker.
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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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Free and curated list of startup directories to promote your new startup. We manually post your startup to more than 150+ relevant directories and blogs to help your startup get discovered.
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Qalculate! is a multiplatform multi-purpose desktop calculator.
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