Is CosmoLex or Didomi better?

Neither clearly leads. CosmoLex starts at $89/month and Didomi at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, CosmoLex or Didomi?

CosmoLex starts at $89/month and Didomi at On request.

Does CosmoLex or Didomi run on more platforms?

CosmoLex runs on Web, iOS, Android. Didomi runs on Web, iOS, Android, Connected TV, API.

What is CosmoLex best used for?

CosmoLex is most often used for a two to ten lawyer firm that wants to stop paying for and reconciling quickbooks alongside its practice system, a firm that has failed or fears failing a bar trust account audit and needs three-way reconciliation as standard, a solo practice with no bookkeeper that needs the books to be correct without accounting knowledge, a firm doing insurer defence work that must produce ledes invoices without a separate billing tool. Of those, a two to ten lawyer firm that wants to stop paying for and reconciling quickbooks alongside its practice system and a firm that has failed or fears failing a bar trust account audit and needs three-way reconciliation as standard are not what Didomi is typically brought in for.

What can CosmoLex do that Didomi cannot?

CosmoLex covers Built-in general ledger, Three-way trust reconciliation, Time and expense capture, Billing and LEDES. Didomi covers Google CMP certification, IAB TCF support, Connected TV and OTT, Mobile SDKs.

Legal · head to head

CosmoLex vs Didomi

CosmoLex

Legal

Practice management with a full legal general ledger and trust accounting built in

From: $89/month
Rated: -

Full review Website

Didomi

Legal

Google-certified and IAB TCF consent management across web, mobile and connected TV

From: On request
Rated: -

Full review Website

The short version

Each has a real cost: CosmoLex the built-in accounting suits a single law firm entity, so practices with multiple entities, payroll or unusual revenue recognition still need an external accountant and a second system.; Didomi pricing is based on monthly unique visitors and is not published, so a large publisher cannot estimate cost before entering a sales process, and traffic spikes translate directly into billing surprises.
They diverge on capability: CosmoLex covers Built-in general ledger, Didomi covers Google CMP certification.
Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which CosmoLex and Didomi actually diverge.

Attributes where CosmoLex and Didomi differ
Attribute	CosmoLex	Didomi
Starting price	$89/month	On request
Pricing model	Per user per month	quote
Platforms	Web, iOS, Android	Web, iOS, Android, Connected TV, API

Identical on both: free tier (No), user rating (Not yet rated), category (Legal).

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 CosmoLex

Built-in general ledger
Three-way trust reconciliation
Time and expense capture
Billing and LEDES
CosmoLex Pay
Matter management

Only in Didomi

Google CMP certification
IAB TCF support
Connected TV and OTT
Mobile SDKs
Consent proof storage
Preference centre
Consent analytics
Global privacy regimes

What people use each for

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

CosmoLex

A two to ten lawyer firm that wants to stop paying for and reconciling QuickBooks alongside its practice systemnot Didomi
A firm that has failed or fears failing a bar trust account audit and needs three-way reconciliation as standardnot Didomi
A solo practice with no bookkeeper that needs the books to be correct without accounting knowledgenot Didomi
A firm doing insurer defence work that must produce LEDES invoices without a separate billing toolnot Didomi

Didomi

A European publisher whose Google Ad Manager revenue is withheld without a Google-certified CMP integrated with Consent Modenot CosmoLex
A broadcaster collecting consent on connected TV apps, where certified CMP options are very limitednot CosmoLex
A multinational advertiser needing one consent signal honoured consistently across web, iOS and Android propertiesnot CosmoLex
A group that must produce consent evidence to a data protection authority following a complaintnot CosmoLex

Where each one falls short

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

CosmoLex

The built-in accounting suits a single law firm entity, so practices with multiple entities, payroll or unusual revenue recognition still need an external accountant and a second system.
Document management is basic storage rather than versioned matter-centric DMS, so firms with heavy document workflow outgrow it and bolt on something else.
The integration catalogue is materially smaller than Clio, so niche intake, e-discovery or automation tools often require manual export instead of a native connection.
Ownership sits with ProfitSolv alongside Tabs3, TimeSolv and Rocket Matter, and buyers have limited visibility into which brand receives investment over a three-year contract.
The interface and reporting feel dated next to newer competitors, and custom reporting in particular often means exporting to a spreadsheet.

Didomi

Pricing is based on monthly unique visitors and is not published, so a large publisher cannot estimate cost before entering a sales process, and traffic spikes translate directly into billing surprises.
Consent banners depress measurable traffic by design, and Didomi cannot prevent that, so publishers moving from a non-compliant banner should expect an immediate drop in tracked users and attributable conversions.
Certification is a moving target: Google and IAB update requirements periodically and each version change forces integration work on your side, not only on the vendor's.
Connected TV consent collection depends on the app platform and remote control interface, and implementations are considerably more involved than a web banner, often requiring per-platform development.
The wider privacy suite beyond consent is thinner than dedicated privacy platforms, so an organisation needing data subject rights automation and data mapping usually buys a second vendor anyway.

Pricing, plan by plan

CosmoLex

$89/month

CosmoLex$89/month
- Per user per month billed annually, higher month to month
- General ledger and trust accounting included rather than sold as an add-on
- Payment processing charged at card and bank transaction rates

Didomi

On request

Didomi CMP$undefined/year
- Google-certified CMP for web, mobile and CTV
- IAB TCF registered
- Consent proof storage and analytics

Which should you pick?

Choose CosmoLex if

You need built-in general ledger.
You work on Web, iOS, Android.
You also want three-way trust reconciliation.

CosmoLex review

Choose Didomi if

You need google cmp certification.
You work on Web, iOS, Android, Connected TV, API.
You also want iab tcf support.

Didomi review

Questions people ask

Is CosmoLex or Didomi better?: Neither clearly leads. CosmoLex starts at $89/month and Didomi at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CosmoLex or Didomi?: CosmoLex starts at $89/month and Didomi at On request.
Does CosmoLex or Didomi run on more platforms?: CosmoLex runs on Web, iOS, Android. Didomi runs on Web, iOS, Android, Connected TV, API.
What is CosmoLex best used for?: CosmoLex is most often used for a two to ten lawyer firm that wants to stop paying for and reconciling quickbooks alongside its practice system, a firm that has failed or fears failing a bar trust account audit and needs three-way reconciliation as standard, a solo practice with no bookkeeper that needs the books to be correct without accounting knowledge, a firm doing insurer defence work that must produce ledes invoices without a separate billing tool. Of those, a two to ten lawyer firm that wants to stop paying for and reconciling quickbooks alongside its practice system and a firm that has failed or fears failing a bar trust account audit and needs three-way reconciliation as standard are not what Didomi is typically brought in for.
What can CosmoLex do that Didomi cannot?: CosmoLex covers Built-in general ledger, Three-way trust reconciliation, Time and expense capture, Billing and LEDES. Didomi covers Google CMP certification, IAB TCF support, Connected TV and OTT, Mobile SDKs.

Answered from the vendors’ own pages

CosmoLex: Do I still need QuickBooks?

No. CosmoLex carries its own general ledger and trust ledgers, which is the main reason firms choose it over Clio or MyCase.

Didomi: Is Didomi Google-certified?

Yes, for web, mobile and connected TV, and the certification has been renewed across multiple years.

CosmoLex: Does it handle IOLTA compliance?

Yes. Trust ledgers, overdraft prevention and three-way reconciliation are in the core product rather than in a paid tier.

Didomi: Does it support IAB TCF?

Yes, it is a registered TCF CMP, currently supporting version 2.2 and later revisions.

CosmoLex: Who owns CosmoLex?

ProfitSolv, a private-equity backed group that also owns Tabs3, TimeSolv, ImagineTime and Rocket Matter.

Didomi: What does it cost?

Not published. Pricing is based on monthly unique visitors and quoted.

Didomi: Where is consent data stored?

Didomi is a French company and offers European storage, which matters for procurement teams weighing supervisory jurisdiction.

CosmoLex vs Didomi

CosmoLex

Didomi

The short version

Where they differ

What each one covers

Only in CosmoLex

Only in Didomi

What people use each for

CosmoLex

Didomi

Where each one falls short

CosmoLex

Didomi

Pricing, plan by plan

CosmoLex

Didomi

Which should you pick?

Choose CosmoLex if

Choose Didomi if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on CosmoLex

More on Didomi

Keep looking

Other head to heads