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

Expired1.com
Expirel
Expirio
One overview of everything with an expiry date, that warns you in time before something auto-renews or lapses. On your own Excel or SharePoint, nothing to move.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | yieldstack.ai | owndup.com |
| Pricing | ||
| Company | Startup from the United States · 1 - 9 employees · 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


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,...
One missed date can cost thousands of euros. Contracts, certificates, domains, insurance policies and permits sit scattered across spreadsheets and mailboxes, each maintained by one person. When that person leaves, the list goes unmanaged and deadlines slip. OwndUp turns those scattered...
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
No analysis of OwndUp yet.
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One missed date can cost thousands of euros.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing YieldStack and OwndUp.
YieldStack's answer
The largest CRE Lenders in the USA
OwndUp's answer:
We have just wrapped up our beta pilot and are not naming customers publicly yet Pilot users were small and mid-sized EU teams tracking contracts, certificates and domain deadlines
YieldStack's answer
AI integrations supporting the platform’s workflows.
OwndUp's answer:
OwndUp is built on .NET with Blazor Server, EF Core with PostgreSQL for data, and Hangfire for background jobs such as reminders and escalations. It integrates with Microsoft 365 for login and reads SharePoint and Excel lists as a read-only mirror. Billing runs on Stripe, and everything is hosted within the EU, in Frankfurt and Amsterdam.
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.
OwndUp's answer:
OwndUp sits in the gap between a loose spreadsheet and a heavy system. You build shareable lists with your own columns for anything with an expiry date, contracts, certificates, subscriptions, domains, and attach reminders that warn you by email and in your calendar before something silently renews or lapses. What makes it different is that every list has an owner who can never fall away: ownership can be handed over, a backup steps in when someone is ill or leaves, and unanswered heads-ups escalate automatically. And it works on what you already have, linking your existing Excel or SharePoint list read-only, so there is nothing to migrate.
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.
OwndUp's answer:
Most alternatives are either spreadsheets that never warn you, or contract management suites that need an implementation project before you see any value. OwndUp is ready in minutes: import your Excel, link a SharePoint list, or start from one of nine templates. You get per-row reminders, expiry dates in Outlook, Google or Apple Calendar, roles for sharing, and continuity built in, so the overview keeps working even when the person who always kept track of it leaves. Pricing is deliberately simple too: two fixed amounts, no per-user fees, and the backup role is always free.
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.
OwndUp's answer:
Small and mid-sized teams, often in the EU, where one person quietly keeps track of contracts, certificates, licences or domains in a spreadsheet. Typical users are office managers, operations leads and finance people who are responsible for deadlines but do not want to run a heavy system. Lite serves individuals watching their own deadlines; Business is for teams that need shared lists, handover and a safety net when someone falls away.
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.
OwndUp's answer:
OwndUp started with a moment most companies recognise: a contract renews silently, or a certificate turns out to have expired, and the money or the valid paperwork is already gone. Usually one person kept track of it all in their own file, and when they left, the overview walked out the door with them. Spreadsheets never send a heads-up, and contract management systems felt like overkill. So we built the middle ground: a smarter, shared spreadsheet that warns you in time and never depends on a single person.
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