Shared ledger or payment app? They solve different problems.

There are two categories of "money apps" that get conflated all the time, and the confusion costs people a surprising amount of time and trust.

Payment apps — Venmo, Cash App, Wise, Revolut, your bank's transfer screen — move actual money between accounts.

Shared ledgers — Splitwise, Solvory, the old "IOU" notebook your grandmother kept — track what's owed, by whom, to whom. They don't move money.

Both are useful. They are not substitutes. The reason they get confused is that some apps try to do both, and end up doing neither well.

What payment apps are good at

• Moving money fast.
• Doing it cheaply (sometimes).
• Verifying that the money actually arrived.
• Producing a receipt.

What they're bad at:

• Tracking obligations that haven't been paid yet.
• Handling debts in currencies the app doesn't support.
• Keeping a clean record across years.
• Saying anything useful about who owes what when no money has flowed yet.

What shared ledgers are good at

• A single source of truth between two or more people.
• Multi-currency, multi-direction, unsettled positions.
• A record of intent, not just history.
• Coordination before the transfer happens.
• Forgiveness, partial settlement, dispute resolution.

What they're bad at:

• Actually moving money.

The hybrid approach (what actually works)

Most people who handle money between humans need both, and use them in sequence:

1. Decide what's owed using a shared ledger. Two people, agreement on the record. Zero ambiguity.
2. Transfer using whatever payment rail is convenient — bank transfer, cash, Wise, Venmo, an offsetting favor.
3. Confirm the transfer happened by both marking it as paid in the ledger.

That third step is the one most people skip. The transfer happens, but neither side updates the shared record, and three months later there's a disagreement about whether the November rent was settled. The fix isn't a different app — it's the discipline of always closing the loop in the ledger.

Why we don't try to do both

This is a question we get a lot: why doesn't Solvory just process the payment too, like Splitwise Pay or Cash App?

Three reasons:

Regulatory cost. The moment an app handles funds, it needs banking partners, KYC, anti-money-laundering compliance, regional licenses. That's tens of millions of dollars to do correctly, plus a per-user friction that drops conversion rates by half.

Cross-border reality. Solvory's biggest user pockets are international families. They already use Wise, Western Union, in-person cash, hawala. They are not going to route the actual money through a US-based fintech, no matter how good our UI is. Trying to compete with their existing rails is a fool's errand.

Trust. A coordination layer with no money in it is hard to weaponize. You can't drain it. You can't lock funds. The worst thing that can happen is a wrong number on a record, which is reversible by the other party. That's a much smaller blast radius than a payment processor.

So we stay in our lane. We do the agreement layer. The transfer is yours.

Pick the right tool for the right moment

If you're trying to move $50 to a friend right now, open Venmo. If you're trying to remember who's ahead between you and your roommate over the last 18 months, open a shared ledger. If you're doing both — most of you, most of the time — use them together, deliberately, and always close the loop on both sides.

Your future self will thank you.