Comparison
Worthune vs Fintactix
Fintactix sells hosted calculators to banks and credit unions, embedded with a single line of code and priced by institution size on a multi-year term. Worthune sells financial models as an API and an embed, priced publicly, with a specification and test cases published per model. Both put calculators on a bank's site; they differ on whether you can read the price and the math before you buy.
Every claim below about Fintactix carries the page it was read from and the date. Oldest check on this page: .
Worthune
Financial planning models delivered as a REST API, an MCP server, and embeddable calculators, each with a published spec and a per-run audit record.
Developers and product teams at fintech, wealthtech, banking, and AI companies.
Fintactix
Hosted financial calculators and digital content for financial institutions.
Banks and credit unions.
Side by side
Sourced facts only. Where a cell says a vendor does not publish something, that means we looked at the page named in the sources below on the date shown and it was not there — not that the answer is no.
| Worthune | Fintactix | |
|---|---|---|
| How it is delivered | REST API, MCP server, and a one-script-tag embed | 88 calculators across 11 categories, hosted by the vendor and embedded with a single line of code using an HTML iframe |
| Pricing model | Subscription; three models free with attribution, no per-run metering | Not stated publicly; quoted on request, and described as depending on the institution's asset size, the categories licensed, and a one-to-three-year term |
| Entry price | Free for three models; $199/month for the full catalog | Not stated publicly |
| Programmatic API | Yes — REST and MCP, no key required for the three sample models | Not verified(not checked yet) |
| Published specification per calculator | Yes — three in full publicly, the rest with a subscription; every input contract public | Not verified(not checked yet) |
| Published test cases | Yes — 250 cases per model, downloadable as JSONL | Not verified(not checked yet) |
| Constants with primary sources and check dates | Yes — every constant carries a primary source and the date it was last checked | Not verified(not checked yet) |
| Per-run audit record | Yes — SHA-256 over model, spec version, inputs and outputs, returned with every run | Not verified(not checked yet) |
| Free tier | Three models, no signup and no key, attribution required | Not verified(not checked yet) |
Where Fintactix is stronger
Purpose-built for financial institutions, at scale
A vendor whose entire business is bank and credit-union websites knows that market's procurement, hosting expectations, and content needs in a way a younger company does not. Their own page states the calculators serve more than 200 institutions. If your requirement includes a vendor who has answered your compliance questionnaire before, that is a real advantage.
When Worthune is the wrong choice
If you want one vendor for calculators, content, and campaigns
We sell computation, not a digital-content program for financial institutions. An institution looking for a bundled marketing and engagement suite should not buy an API from us and try to build the rest around it.
Our case
Where we think the difference actually matters
This section is our opinion rather than sourced fact, and it is marked that way on purpose — the table above is what a source URL can settle, and this is what it cannot.
You can see the price without a meeting
Pricing by asset size, quoted on request over a one-to-three-year term, is the industry norm and it means the evaluation starts with a sales call. Ours is on the pricing page, and three models run with no signup at all.
The compliance answer is a document, not an assurance
Each model has a written specification stating its formulas and its exclusions, an evidence pack that assembles the specification, the case set, the constants, and a sample run into one print-ready document, and a changelog with no silent behavior changes.
No multi-year term
A monthly subscription that ends when you stop paying. Nothing here needs a term commitment to reach a workable price.
The same math outside the website
The models answer over an API and over MCP, so the calculator on the marketing site and the arithmetic inside an internal tool or an assistant are the same versioned model rather than two implementations that drift.
Questions
Common questions
- What does Fintactix cost?
- Not stated publicly. Their calculators page says pricing depends on the institution's asset size, the categories licensed, and a one-to-three-year term, and directs prospects to schedule a meeting. We checked that page on the date in the sources below.
- What will our compliance reviewer want, and who provides it?
- Usually: what does this compute, where do the numbers come from, and can you show it was right. Worthune answers those with a versioned specification per model, a registry entry for every government constant with its primary source and check date, and a per-model evidence pack that gathers all of it into one document.
- How hard is it to put a Worthune calculator on a bank website?
- One script tag and a div, with optional prefilled values as data attributes. No build step, no framework requirement, no back-end integration. The three sample models embed free with an attribution badge.
- What happens to data our customers type into the calculator?
- Calculations are stateless. Inputs are not stored, results are not stored, and no personal data is retained. The only record kept is an aggregate daily count of which models were called, containing nothing derived from any individual's inputs.
Sources
Every claim above, and where it came from
- Fintactix · Entry price — www.fintactix.com/financial-calculators-for-websites, checked
- Worthune · Free tier — worthune.com/pricing, checked
- Worthune · Programmatic API — worthune.com/docs, checked
- Worthune · Per-run audit record — worthune.com/proof, checked
Product names and trademarks belong to their owners and are used here only to identify the products compared. Nothing on this page implies endorsement or affiliation. Found something out of date? Tell us at support@worthune.com and we will re-check it.