Theorem alternatives: 12 options compared

TL;DR: If you are replacing Theorem, the closest options are Tally, Pesto, Debteye. The table below compares 12 alternatives on what they do, stage, size and status.

Every alternative below is compared on what it actually does, not just its category — so you can see which one genuinely replaces Theorem (YC Winter 2014).

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What are the best alternatives to Theorem?

The three closest alternatives to Theorem are:

  1. Tally — works in the same Fintech category (YC Winter 2025).
  2. Pesto — works in the same Fintech category (YC Winter 2021).
  3. Debteye — Automate credit counseling. (YC Summer 2011).

Theorem alternatives compared

AlternativeWhat it doesStageTeamStatus
Tally—YC Winter 20252Active
Pesto—YC Winter 20218Active
DebteyeAutomate credit counseling.YC Summer 20112Acquired
Satchel—YC Summer 20188Inactive
WealorAI-native platform for wealth managersYC Spring 2026—Active
EkpaBuilding Autonomous Research Agents for TradingYC Summer 20262Active
AtlasModern spend management & concierge.YC Winter 201925Active
BitsBits is a credit card designed to help people build creditYC Summer 202015Active
ConstantAI Analysts for the Buy-SideYC Winter 20232Active
Y CombinatorMake something people want.YC Unspecified100Active
Angle HealthHealth Insurance for StartupsYC Winter 2020100Active
FreyaVoice AI for EnterprisesYC Summer 202514Active

Which Theorem alternative should I choose?

It depends on your size. Tally is the closest match on what Theorem actually does. If you need something more established, sort the table by team size — larger teams generally mean more support and a longer track record. If budget is the constraint, the earlier-batch companies are usually the ones still competing on price.

Is Theorem still active?

Theorem has been acquired, which often means pricing, roadmap or support changes. That is the usual reason people start looking at this list.

How was this list put together?

Every company here is Y Combinator-backed and was matched to Theorem on what it actually does — its own description of its product — rather than on a broad category label. Batch, team size and operating status come from the YC directory and are shown as-is. We do not rank by payment.

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