Developer Tools · head to head
Prettier vs Unit21
Unit21
Cybersecurity
No-code fraud and AML risk operations platform for fintechs and neobanks
- From
- On request
- Free plan
- No
The short version
- Only Prettier has a free tier, so it costs nothing to try first.
- Each has a real cost: Prettier inflexible style rules that cannot be customized significantly, forcing teams to accept opinionated defaults; Unit21 it is built for fintech scale rather than card issuer scale, so organisations reaching very high transaction volumes generally re-evaluate against heavier platforms and face a migration.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Prettier and Unit21 actually diverge.
Identical on both: 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 Prettier
Nothing recorded that Unit21 does not also cover.
Only in Unit21
- No-code rule builder
- Case management
- SAR filing
- Backtesting
- Identity and device signals
- Data ingestion API
What people use each for
The jobs each tool is most often brought in to do.
Prettier
- Automatically formatting TypeScript files to project style standardsnot Unit21
- Enforcing consistent HTML indentation across component filesnot Unit21
- Removing style-related comments from pull request reviewsnot Unit21
- Formatting GraphQL queries with consistent indentationnot Unit21
Unit21
- A neobank whose sponsor bank requires a documented monitoring programme before it will keep the BIN sponsorshipnot Prettier
- A crypto exchange needing SAR filing and case management without building an internal compliance engineering teamnot Prettier
- A payments startup where the fraud lead needs to ship a new rule the same day a new attack pattern appearsnot Prettier
- A lender consolidating fraud alerts from three point tools into one investigator queue with a single audit trailnot Prettier
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Prettier
- Inflexible style rules that cannot be customized significantly, forcing teams to accept opinionated defaults
- Developers must format entire files rather than selective line ranges in some contexts
- Limited language support compared to some alternatives, though it covers major languages
Unit21
- It is built for fintech scale rather than card issuer scale, so organisations reaching very high transaction volumes generally re-evaluate against heavier platforms and face a migration.
- No-code rule authoring shifts power to the risk team, which is the point, but without governance it produces rule sprawl that nobody can explain to an examiner two years later.
- Detection quality depends on the signals you feed it, so a thin integration produces thin results and the platform cannot compensate with proprietary consortium data the way larger vendors do.
- Pricing is quoted by volume with an annual commitment, so a fintech whose growth stalls pays for headroom it did not use.
- SAR filing coverage is oriented to United States FinCEN reporting, so firms filing in the United Kingdom, European Union or Asia handle those submissions outside the tool.
Pricing, plan by plan
Prettier
FreeNo published plan breakdown. See the Prettier review.
Unit21
On request- Unit21 Platform$undefined/year
- Priced by monitored volume and modules, annual contract
- Fraud, AML and case management packaged separately
- Implementation and historical data backfill quoted with the subscription
Which should you pick?
Choose Prettier if
- You want to start without paying.
- You work on CLI, Editor Plugins, Build Tools.
Questions people ask
- Is Prettier or Unit21 better?
- Neither clearly leads. Prettier starts at Free and Unit21 at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Prettier or Unit21?
- Prettier has a free tier; the other does not. Paid plans start at Free for Prettier and On request for Unit21.
- Does Prettier or Unit21 run on more platforms?
- Prettier runs on CLI, Editor Plugins, Build Tools. Unit21 runs on Web.
- Can I use Prettier for free?
- Yes. Prettier has a free tier, so you can try it without paying. Unit21 starts at On request.
- What is Prettier best used for?
- Prettier is most often used for automatically formatting typescript files to project style standards, enforcing consistent html indentation across component files, removing style-related comments from pull request reviews, formatting graphql queries with consistent indentation. Of those, automatically formatting typescript files to project style standards and enforcing consistent html indentation across component files are not what Unit21 is typically brought in for.
- What can Prettier do that Unit21 cannot?
- Unit21 covers No-code rule builder, Case management, SAR filing, Backtesting.
Answered from the vendors’ own pages
Prettier: Is Prettier free and open source?
Yes, Prettier is completely free and open source, available as an npm package with no licensing costs or subscriptions.
SourceUnit21: Do we need engineers to run it?
Only for the initial data integration. After that the design intent is that risk and compliance staff author and deploy rules themselves.
Prettier: Can Prettier be integrated with ESLint?
Yes, Prettier integrates with ESLint by disabling ESLint formatting rules via eslint-config-prettier, allowing both tools to work together with Prettier handling formatting and ESLint handling code quality.
SourceUnit21: Does it file SARs?
Yes, it generates and electronically files suspicious activity reports to FinCEN. Non-US regimes are not covered to the same depth.
Prettier: Does Prettier support configuration customization?
Prettier is intentionally opinionated with limited configuration options to enforce consistency. You can create a .prettierrc file for basic customization, but Prettier does not support extensive rule customization like ESLint.
SourceUnit21: Can we test a rule before it goes live?
Yes. Backtesting against historical data to see projected alert volume is one of the more useful parts of the product, because alert volume is the real cost.
Related pages
Other head to heads
- Prettier vs ESLint
- Prettier vs Yarn
- Prettier vs Earthly
- Prettier vs Claude Code
- Prettier vs Deep Code
- Prettier vs Fig
- Prettier vs Visual Studio Code
- Prettier vs pnpm
- Prettier vs Turborepo
- Prettier vs GitHub Copilot
- Prettier vs Penpot
- Prettier vs Keycloak
- Prettier vs WarpBuild
- Prettier vs Webpack
- Prettier vs Avo
- Prettier vs Azure DevOps
- Prettier vs Backstage
- Prettier vs Bitbucket
- Prettier vs Feedzai
- Prettier vs ThetaRay
- Prettier vs Sardine
- Prettier vs NICE Actimize
- Prettier vs Featurespace ARIC Risk Hub
- Prettier vs Socure
- Prettier vs Quantexa
- Prettier vs Fenergo
- Prettier vs Transmit Security
- Prettier vs Jumio
- Prettier vs Silent Eight
- Prettier vs Sumsub
- Prettier vs IDnow
- Prettier vs Kaspersky Total Security
- Prettier vs LogicManager
- Prettier vs Mullvad VPN
- Prettier vs Private Internet Access
- Unit21 vs ESLint
- Unit21 vs Yarn
- Unit21 vs Earthly
- Unit21 vs Claude Code
- Unit21 vs Deep Code
- Unit21 vs Fig
- Unit21 vs Visual Studio Code
- Unit21 vs pnpm
- Unit21 vs Turborepo
- Unit21 vs GitHub Copilot
- Unit21 vs Penpot
- Unit21 vs Keycloak
- Unit21 vs WarpBuild
- Unit21 vs Webpack
- Unit21 vs Avo
- Unit21 vs Azure DevOps
- Unit21 vs Backstage
- Unit21 vs Bitbucket
- Unit21 vs Feedzai
- Unit21 vs ThetaRay
- Unit21 vs Sardine
- Unit21 vs NICE Actimize
- Unit21 vs Featurespace ARIC Risk Hub
- Unit21 vs Socure
- Unit21 vs Quantexa
- Unit21 vs Fenergo
- Unit21 vs Transmit Security
- Unit21 vs Jumio
- Unit21 vs Silent Eight
- Unit21 vs Sumsub
- Unit21 vs IDnow
- Unit21 vs Kaspersky Total Security
- Unit21 vs LogicManager
- Unit21 vs Mullvad VPN
- Unit21 vs Private Internet Access