Softwr

Legal · head to head

CosmoLex vs Rocket Matter

CosmoLex logo

CosmoLex

Legal

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

From
$89/month
Rated
-
Full reviewWebsite
Rocket Matter logo

Rocket Matter

Legal

Legal practice management with billing and time tracking, tiered from matter basics to full legal accounting

From
On request
Rated
-
Full reviewWebsite

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.; Rocket Matter trust accounting compliance is only included on the most expensive Elite tier, so firms with a regulatory requirement for it face a higher effective floor price than the entry-level plan suggests.
  • They diverge on capability: CosmoLex covers Built-in general ledger, Rocket Matter covers Time tracking and billing.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which CosmoLex and Rocket Matter actually diverge.

Attributes where CosmoLex and Rocket Matter differ
AttributeCosmoLexRocket Matter
Starting price$89/monthOn request

Identical on both: pricing model (Per user per month), free tier (No), platforms (Web, iOS, Android), 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

Only in Rocket Matter

  • Time tracking and billing
  • Trust accounting
  • Document management
  • Matter budgeting
  • Reporting

Both cover

  • Matter management

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 Rocket Matter
  • A firm that has failed or fears failing a bar trust account audit and needs three-way reconciliation as standardnot Rocket Matter
  • A solo practice with no bookkeeper that needs the books to be correct without accounting knowledgenot Rocket Matter
  • A firm doing insurer defence work that must produce LEDES invoices without a separate billing toolnot Rocket Matter

Rocket Matter

  • A solo practitioner wanting matter tracking and billing in one system without separate accounting softwarenot CosmoLex
  • A small firm that needs kanban-style visibility into where each matter standsnot CosmoLex
  • A mid-sized firm that has outgrown Essentials and needs split billing across multiple timekeepers on a matternot CosmoLex
  • A firm required to demonstrate trust accounting compliance that specifically needs the top Elite tiernot 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.

Rocket Matter

  • Trust accounting compliance is only included on the most expensive Elite tier, so firms with a regulatory requirement for it face a higher effective floor price than the entry-level plan suggests.
  • It is not built for large enterprise legal departments, so firms above a certain size outgrow it and move to platforms such as Clio or Aderant.
  • The tier structure gates common workflow features like kanban boards and templates behind Pro and above, so the cheapest tier is functionally limited.
  • Its name is easily confused with the Matter smart-home connectivity protocol, an entirely unrelated technology, which can cause mismatched search results.
  • Per-user monthly pricing across four tiers means a growing firm needs to actively reassess its plan as headcount and accounting needs change, rather than a single plan scaling automatically.

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

Rocket Matter

On request
  • Essentials$49/month
    • Matter management
    • Billing and timekeeping
    • No trust accounting
  • Pro$79/month
    • Matter templates
    • Kanban board matter management
  • Premier$99/month
    • Advanced billing permissions
    • Split billing and fee allocation
  • Elite$129/month
    • Matter budgets
    • Full legal accounting and trust accounting compliance

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 Rocket Matter if

  • You need time tracking and billing.
  • You work on Web, iOS, Android.
  • You also want trust accounting.
Rocket Matter review

Questions people ask

Is CosmoLex or Rocket Matter better?
Neither clearly leads. CosmoLex starts at $89/month and Rocket Matter at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CosmoLex or Rocket Matter?
CosmoLex starts at $89/month and Rocket Matter at On request.
Does CosmoLex or Rocket Matter run on more platforms?
Both run on Web, iOS, Android, so platform support will not decide this one for you.
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 Rocket Matter is typically brought in for.
What can CosmoLex do that Rocket Matter cannot?
CosmoLex covers Built-in general ledger, Three-way trust reconciliation, Time and expense capture, Billing and LEDES. Rocket Matter covers Time tracking and billing, Trust accounting, Document management, Matter budgeting. Both handle Matter management.

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.

Rocket Matter: Does Rocket Matter include trust accounting?

Only on the Elite tier; the Essentials, Pro and Premier tiers do not include full trust accounting compliance.

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.

Rocket Matter: Is Rocket Matter the same as the Matter smart-home standard?

No, that is an unrelated connectivity protocol for smart-home devices; Rocket Matter is legal practice management software.

CosmoLex: Who owns CosmoLex?

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

Rocket Matter: What size firm is Rocket Matter built for?

Solo practitioners through mid-sized firms; larger firms typically need a more enterprise-oriented platform.

Share

Related pages

More on CosmoLex

More on Rocket Matter

Keep looking

Other head to heads