Is Formance or QuestDB better?

Neither clearly leads. Formance starts at Free and QuestDB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Formance or QuestDB?

Formance starts at Free and QuestDB at Free.

Does Formance or QuestDB run on more platforms?

Formance runs on Linux, Docker, Kubernetes, Web, API. QuestDB runs on Docker, Kubernetes, Cloud (AWS, Azure, GCP).

Can I use Formance for free?

Both have a free tier, so you can try either at no cost before committing.

What is Formance best used for?

Formance is most often used for a marketplace splitting a single customer payment between seller, platform fee and tax that needs the split to be atomic and auditable, a fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an audit, a payments team that wants one normalised model across several psps so reconciliation is not written separately for each, a company that wants its ledger under a licence it can keep running even if the vendor disappears. Of those, a marketplace splitting a single customer payment between seller, platform fee and tax that needs the split to be atomic and auditable and a fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an audit are not what QuestDB is typically brought in for.

What can Formance do that QuestDB cannot?

Formance covers Double-entry ledger, Numscript transaction DSL, Multi-currency, Payments connectivity. QuestDB covers High Throughput Ingestion, SQL Support, Time-series Optimization, SIMD Vectorization.

APIs · head to head

Formance vs QuestDB

Formance

APIs

Open source double-entry ledger and payment orchestration for money-moving software

From: Free
Rated: -

Full review Website

QuestDB

Databases

Fast open source time-series database for high throughput ingestion

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: Formance formance holds no money and provides no regulatory cover, so it must be paired with a payments provider or bank, and buyers occasionally mistake a ledger for a treasury system and discover the gap late.; QuestDB open-source edition lacks high-availability, distributed architecture, and enterprise security features
They diverge on capability: Formance covers Double-entry ledger, QuestDB covers High Throughput Ingestion.
Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Formance and QuestDB actually diverge.

Attributes where Formance and QuestDB differ
Attribute	Formance	QuestDB
Pricing model	Open source, no licence fee	open-source
Platforms	Linux, Docker, Kubernetes, Web, API	Docker, Kubernetes, Cloud (AWS, Azure, GCP)
Category	APIs	Databases
Founded	Unknown	2014

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Formance

Double-entry ledger
Numscript transaction DSL
Multi-currency
Payments connectivity
Reconciliation
Self-hosted deployment
Cloud offering
API and SDKs

Only in QuestDB

High Throughput Ingestion
SQL Support
Time-series Optimization
SIMD Vectorization
Column-oriented Storage
Built-in Web Console
InfluxDB Line Protocol
PostgreSQL

What people use each for

The jobs each tool is most often brought in to do.

Formance

A marketplace splitting a single customer payment between seller, platform fee and tax that needs the split to be atomic and auditablenot QuestDB
A fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an auditnot QuestDB
A payments team that wants one normalised model across several PSPs so reconciliation is not written separately for eachnot QuestDB
A company that wants its ledger under a licence it can keep running even if the vendor disappearsnot QuestDB

QuestDB

Time-series analytics ingesting up to 20M rows/second from IoT sensors or financial data feedsnot Formance
Real-time dashboarding with 32ms time-to-first-row latency for minute-level analyticsnot Formance
Applications requiring multi-tier storage (hot ingest, real-time SQL, cold Parquet archive)not Formance

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Formance

Formance holds no money and provides no regulatory cover, so it must be paired with a payments provider or bank, and buyers occasionally mistake a ledger for a treasury system and discover the gap late.
Numscript is a domain-specific language your team must learn, and while it makes complex splits expressible it also means transaction logic sits outside the languages your engineers already debug well.
Self-hosting a ledger that must never lose or duplicate a transaction is a serious operational commitment covering backups, upgrades and Postgres tuning, which is real cost the zero licence fee hides.
Enterprise pricing is not published, so the difference between the free path and the supported path cannot be evaluated without a sales conversation.
The company is much smaller than the incumbent alternatives, and while the MIT licence protects the code it does not protect the roadmap, so features on the hosted side may arrive slowly or change direction.

QuestDB

Open-source edition lacks high-availability, distributed architecture, and enterprise security features
Enterprise edition pricing not published; requires contacting sales for custom quote
Ingestion limit of 20M rows/sec platform-dependent; may not scale to extreme throughput requirements

Pricing, plan by plan

Formance

Free

Open SourceFree
- MIT licensed core ledger
- Numscript transaction DSL
- Multi-currency tracking
Enterprise$undefined/year
- Managed or private deployment
- Payments connectivity and reconciliation
- Support with response commitments

QuestDB

Free

No published plan breakdown. See the QuestDB review.

Which should you pick?

Choose Formance if

You need double-entry ledger.
You want to start without paying.
You work on Linux, Docker, Kubernetes, Web, API.
You also want numscript transaction dsl.

Formance review

Choose QuestDB if

You need high throughput ingestion.
You want to start without paying.
You work on Docker, Kubernetes, Cloud (AWS, Azure, GCP).
You also want sql support.

QuestDB review

Questions people ask

Is Formance or QuestDB better?: Neither clearly leads. Formance starts at Free and QuestDB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Formance or QuestDB?: Formance starts at Free and QuestDB at Free.
Does Formance or QuestDB run on more platforms?: Formance runs on Linux, Docker, Kubernetes, Web, API. QuestDB runs on Docker, Kubernetes, Cloud (AWS, Azure, GCP).
Can I use Formance for free?: Both have a free tier, so you can try either at no cost before committing.
What is Formance best used for?: Formance is most often used for a marketplace splitting a single customer payment between seller, platform fee and tax that needs the split to be atomic and auditable, a fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an audit, a payments team that wants one normalised model across several psps so reconciliation is not written separately for each, a company that wants its ledger under a licence it can keep running even if the vendor disappears. Of those, a marketplace splitting a single customer payment between seller, platform fee and tax that needs the split to be atomic and auditable and a fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an audit are not what QuestDB is typically brought in for.
What can Formance do that QuestDB cannot?: Formance covers Double-entry ledger, Numscript transaction DSL, Multi-currency, Payments connectivity. QuestDB covers High Throughput Ingestion, SQL Support, Time-series Optimization, SIMD Vectorization.

Answered from the vendors’ own pages

Formance: Is Formance really open source?

Yes. The core ledger is MIT licensed with full source access and no deployment restrictions.

QuestDB: How much does QuestDB Enterprise cost?

QuestDB does not publish specific pricing for the Enterprise tier. Customers must contact QuestDB via their enterprise contact form to receive a custom quote.

Source

Formance: Does Formance move money?

No. It records and orchestrates movements; the actual payments happen at a PSP or bank you connect.

QuestDB: Does QuestDB offer a free version?

Yes, QuestDB Open Source is completely free and recommended for evaluation, prototyping, and pilot projects. Enterprise features, high availability, security, and dedicated support require the paid Enterprise tier.

Source

Formance: What does the enterprise version cost?

Not published. It is an annual subscription quoted per customer.

QuestDB: What deployment options does QuestDB offer?

QuestDB offers open source deployment, Enterprise deployment, and Bring Your Own Cloud (BYOC) deployment. Pricing details for BYOC and Enterprise tiers are not published and require direct contact with sales.

Source

Formance: Do I have to use Numscript?

Yes for anything beyond the simplest transfers. It is how multi-party transactions are expressed atomically.

Formance vs QuestDB

Formance

QuestDB

The short version

Where they differ

What each one covers

Only in Formance

Only in QuestDB

What people use each for

Formance

QuestDB

Where each one falls short

Formance

QuestDB

Pricing, plan by plan

Formance

QuestDB

Which should you pick?

Choose Formance if

Choose QuestDB if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Formance

More on QuestDB

Keep looking

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