
SpeedCrunch
Numi App
Qalculate!
Soulver
GeoGebra Scientific Calculator
WolframAlpha
RealCalc Scientific Calculator
PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody...

StackSource
AI-native commercial mortgage brokerage. One submission, lender matching, and human support through closing. No upfront fees.

Which is more popular?
Based on our record, PCalc seems to be more popular. It has been mentioned 4 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | pcalc.com | yieldstack.ai |
| Pricing | — | |
| Company | — | Startup from the United States · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of PCalc yet.
YieldStack helps real estate investors, developers, and brokers find commercial mortgage financing from third-party lenders. Borrowers submit a financing request through one platform. AI supports deal preparation and lender-program matching, while YieldStack’s brokerage team helps compare offers,...
What each product offers, as listed by its team.


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
Walkthroughs and reviews on video.
James Thomson of PCalc and DragThing - iOS Today 411
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing PCalc and YieldStack.
YieldStack's answer:
The largest CRE Lenders in the USA
YieldStack's answer:
AI integrations supporting the platform’s workflows.
YieldStack's answer:
YieldStack combines AI-assisted lender matching with hands-on commercial mortgage brokerage. Borrowers submit once, compare financing options, and work with a team that handles structuring, negotiation, and closing coordination. Borrowers approve lender outreach, with no upfront fees and a broker fee paid only at closing.
YieldStack's answer:
YieldStack helps borrowers evaluate the whole financing offer: rate, leverage, fees, reserves, prepayment terms, and closing requirements. Its platform organizes the process, while its brokerage team helps borrowers find suitable lenders and move the deal forward. One submission gives borrowers a coordinated financing process without an upfront brokerage fee.
YieldStack's answer:
Commercial real estate investors, developers, operators, and mortgage brokers seeking bridge, DSCR, fix-and-flip, construction, multifamily, and permanent financing across the United States.
YieldStack's answer:
Rommin Adl and Daniel Chesney founded YieldStack to simplify commercial real estate financing. The platform brings deal preparation, lender matching, offer comparison, and closing coordination into one workflow, combining AI-assisted analysis with human brokerage expertise.
Share your experience with using PCalc and YieldStack. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I think there may be some confusion about "RPN" (Reverse Polish Notation). It was very popular with certain folks, Back In The Day, but I, personally, never warmed to it. But if you really want it, and are an Apple... - Source: Hacker News / over 1 year ago
I’ve been using PCalc, since last century. https://pcalc.com/. - Source: Hacker News / almost 2 years ago
Not sure if you need graphing support but if not, for iOS/Mac I often hear people recommending PCalc: https://pcalc.com. - Source: Hacker News / over 3 years ago
Tracking YieldStack since Mar 2026.
When comparing PCalc and YieldStack, you can also consider the following products.

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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Online platform for commercial real estate loans
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Qalculate! is a multiplatform multi-purpose desktop calculator.
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Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.
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Free online scientific calculator from GeoGebra: perform calculations with fractions, statistics and exponential functions, logarithms, trigonometry and much more!
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