Finlynq vs YNAB: open-source alternative with investments & MCP

When to choose YNAB

YNAB is probably the better pick if any of these matter to you more than owning your data:

You want a proven, opinionated budgeting method with 20 years of content, books, and a strong community behind it. YNAB owns zero-based and envelope budgeting as a category; Finlynq doesn't push any one method.
You want first-party bank sync that just works out of the box: Plaid (US/Canada, and now UK/EU Direct Import). Finlynq has no first-party bank sync today, just file and email import.
You want a polished native iOS / Android app with best-in-class quick-entry at the register. YNAB's mobile apps are more mature than Finlynq's newer ones.
You want shared household budgeting baked right in, with multiple people on one subscription. Finlynq is single-user.
You want a long-stable, well-documented public REST API that a whole community of tools already builds on.

When to choose Finlynq

Finlynq is the one to pick if any of these matter to you:

You want the source code (AGPL v3, on GitHub) and the option to self-host. YNAB is closed-source, SaaS-only, with no self-host path at all.
You want to stop paying a subscription. YNAB runs roughly $14.99/mo or $109/yr; Finlynq is donation-funded, with the same features on self-host and managed cloud.
You want native investment and portfolio tracking: holdings, lot-tracked cost basis, dividends, performance. YNAB tracks investment account balances for net worth only, by design.
You want multi-currency in one place. YNAB is single-currency per budget, so international and expat users end up running separate budgets and tracking FX on the side.
You want per-user encryption where even the operator can't read your payees, notes, or names. YNAB is a hosted SaaS that holds your data in a form it can read.
You want a first-party MCP server. YNAB has shipped no official AI or MCP; community MCPs only exist because YNAB has a public API, and they proxy an all-or-nothing personal access token.

Side-by-side

	Finlynq	YNAB
License	AGPL v3	Closed source
Hosting	Self-host (Docker + PostgreSQL) or managed cloud	Hosted SaaS only (no self-host)
First-party MCP	Yes, 109 HTTP / 93 stdio tools	No, but a public REST API has spawned community MCPs (calebl/ynab-mcp-server and others)
MCP auth	OAuth 2.1 + DCR, Bearer API key, or stdio	Community MCPs proxy a YNAB personal access token (no scoping)
REST / HTTP API	Yes, full surface mirrored from MCP	Yes: official, documented, personal access token + OAuth 2.0
Bank sync	File / email import + connector framework. No first-party Plaid today.	Plaid (US/Canada, and UK/EU Direct Import); CSV/OFX/QFX elsewhere
Encryption at rest	Per-user envelope encryption (AES-256-GCM, scrypt-derived KEK). Operator cannot decrypt.	Operator-held (hosted SaaS); no per-user / zero-knowledge model
Multi-currency	Native, per-currency cost basis, FX locked at trade date	No: one budget is one currency
Investment / portfolio	Lot-tracked cost basis, dividends, FX-aware aggregation; RRSP/TFSA/RESP	Balance-only for net worth; no holdings/cost-basis/dividends
Native mobile app	Yes, native iOS and Android apps (App Store, Google Play); newer and still maturing	Yes: iOS, Android, Apple Watch (best-in-class quick-entry)
Multi-user / household	No (single-user)	Yes: multiple people on one subscription
Pricing	Donation-based; same features on self-host and managed cloud	~$14.99/mo or ~$109/yr; 34-day trial; free year for students
Funding / revenue model	Bootstrapped, donations	Bootstrapped (no outside VC), founder-led; subscription revenue

Migrating from YNAB

Export your YNAB data. Use the CSV export from the web app, or pull transactions via the YNAB REST API with a personal access token.
Import into Finlynq via the staging-review pipeline at /import/reconcile. Review and edit each row; multi-currency, transfer-pair detection, and dedup are all built in.
Connect your AI client: Claude, then Customize, then Connectors, then paste https://finlynq.com/mcp (or your self-host /mcp URL). OAuth handles the rest.

FAQ

Does Finlynq enforce zero-based budgeting like YNAB?▾

No. Finlynq supports category budgets, but it isn't built around one opinionated method. If the give-every-dollar-a-job discipline is the whole reason you'd use YNAB, YNAB does that better.

Can Finlynq sync my bank like YNAB does?▾

Not with first-party bank sync today. Finlynq imports via CSV/OFX/QFX/PDF/email and a connector framework; SnapTrade is on the roadmap. YNAB's Plaid-based sync is more automatic.

Why compare a free app to a paid one?▾

The comparison isn't really about price. It's about source availability, self-hosting, who can read your data, and whether you get investments, multi-currency, and MCP at all. Finlynq's argument is structural.

Does Finlynq track investments? YNAB does not.▾

Yes: holdings, lot-tracked cost basis, dividends, and FX-aware aggregation across accounts, including Canadian RRSP/TFSA/RESP accounts. This is one of the clearest gaps in YNAB.

Can my household share a Finlynq budget like YNAB's family plan?▾

Not yet. Finlynq is single-user today. YNAB's shared-budget pricing is genuinely strong for households.

Sources

YNAB pricing(fetched 2026-05-29)
YNAB API documentation(official PAT + OAuth 2.0 surface, fetched 2026-05-29)
calebl/ynab-mcp-server(community (not official) MCP)
Finlynq on GitHub(AGPL v3 source)

Try Finlynq

Free, open source, AGPL v3. Run it on our managed cloud, or self-host with one Docker Compose file. You get the same features either way.

Try the managed cloud Try the live demo (no signup)Self-host with Docker Source on GitHub