Legal · head to head
Rocket Matter vs Spellbook
Rocket Matter
Legal
Legal practice management with billing and time tracking, tiered from matter basics to full legal accounting
- From
- On request
- Rated
- -
Spellbook
Legal
Contract drafting and review assistant inside Microsoft Word
- From
- On request
- Rated
- -
The short version
- Each has a real cost: 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.; Spellbook it publishes no accuracy figure for its own output and no independent evaluation exists, so a firm must run its own assessment on real agreements.
- They diverge on capability: Rocket Matter covers Matter management, Spellbook covers Word add-in drafting.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Rocket Matter and Spellbook actually diverge.
| Attribute | Rocket Matter | Spellbook |
|---|---|---|
| Pricing model | Per user per month | quote |
| Platforms | Web, iOS, Android | Windows, macOS, Web |
Identical on both: starting price (On request), 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 Rocket Matter
- Matter management
- Time tracking and billing
- Trust accounting
- Document management
- Matter budgeting
- Reporting
Only in Spellbook
- Word add-in drafting
- Contract review
- Benchmarks against market standards
- Question answering
- Named model providers
What people use each for
The jobs each tool is most often brought in to do.
Rocket Matter
- A solo practitioner wanting matter tracking and billing in one system without separate accounting softwarenot Spellbook
- A small firm that needs kanban-style visibility into where each matter standsnot Spellbook
- A mid-sized firm that has outgrown Essentials and needs split billing across multiple timekeepers on a matternot Spellbook
- A firm required to demonstrate trust accounting compliance that specifically needs the top Elite tiernot Spellbook
Spellbook
- Transactional lawyers drafting commercial agreements in Wordnot Rocket Matter
- In-house teams reviewing inbound contracts without a contract lifecycle systemnot Rocket Matter
- Lawyers who want a first pass at redlines before applying their own judgementnot Rocket Matter
- Firms that need to know which model providers process their documents before adopting an AI toolnot Rocket Matter
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
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.
Spellbook
- It publishes no accuracy figure for its own output and no independent evaluation exists, so a firm must run its own assessment on real agreements.
- The ten times more accurate claim originated in a funding announcement as a statement of intent and has no methodology, dataset or baseline behind it.
- Contract text is processed by third-party model providers, so despite the zero data retention agreements this still needs checking against client confidentiality terms and outside counsel guidelines.
- Pricing is not published, so seat cost cannot be compared against competitors without booking a demo.
- It is a drafting assistant rather than a contract lifecycle system, so it does nothing for execution, obligation tracking or renewals.
Pricing, plan by plan
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$129/month
- Matter budgets
- Full legal accounting and trust accounting compliance
Spellbook
On request- Spellbook$undefined/year
- Priced by the number of seats on the licence
- Rates quoted after a demo, not published
- Seven day free trial, free access for academic use
Which should you pick?
Choose Rocket Matter if
- You need matter management.
- You work on Web, iOS, Android.
- You also want time tracking and billing.
Choose Spellbook if
- You need word add-in drafting.
- You work on Windows, macOS, Web.
- You also want contract review.
Questions people ask
- Is Rocket Matter or Spellbook better?
- Neither clearly leads. Rocket Matter starts at On request and Spellbook at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Rocket Matter or Spellbook?
- Rocket Matter starts at On request and Spellbook at On request.
- Does Rocket Matter or Spellbook run on more platforms?
- Rocket Matter runs on Web, iOS, Android. Spellbook runs on Windows, macOS, Web.
- What is Rocket Matter best used for?
- Rocket Matter is most often used for a solo practitioner wanting matter tracking and billing in one system without separate accounting software, a small firm that needs kanban-style visibility into where each matter stands, a mid-sized firm that has outgrown essentials and needs split billing across multiple timekeepers on a matter, a firm required to demonstrate trust accounting compliance that specifically needs the top elite tier. Of those, a solo practitioner wanting matter tracking and billing in one system without separate accounting software and a small firm that needs kanban-style visibility into where each matter stands are not what Spellbook is typically brought in for.
- What can Rocket Matter do that Spellbook cannot?
- Rocket Matter covers Matter management, Time tracking and billing, Trust accounting, Document management. Spellbook covers Word add-in drafting, Contract review, Benchmarks against market standards, Question answering.
Answered from the vendors’ own pages
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.
Spellbook: Is Spellbook's accuracy independently verified?
No. It publishes no accuracy figure of its own, and no third-party evaluation has been published. It did not participate in the Vals Legal AI Report, the main independent lawyer-baselined benchmark. Evaluate it on your own agreements during the trial.
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.
Spellbook: Which models does it use and where does our text go?
Spellbook names OpenAI GPT-5 and Anthropic Claude models, and states it has zero data retention agreements with both providers. Confirm the current terms and subprocessor list against your client confidentiality obligations before use.
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.
Spellbook: What does it cost?
Pricing is per seat but is not published. The vendor quotes it after a demo, so the seat rate cannot be compared with competitors in advance.
Related pages
More on Rocket Matter
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