Assembly Neos vs CosmoLex
CosmoLex scores 8.0/10 vs 7.3/10. Best for: Solo and small firms that want accounting, billing, and trust compliance in one platform so they can ditch QuickBooks entirely.
CosmoLex scores higher overall at 8.0/10 vs 7.3/10. CosmoLex is the best choice if you're tired of reconciling between your practice management tool and QuickBooks. The built-in accounting is genuinely complete, not a half-baked add-on. Skip it if you already have an accountant who handles your books and you just need case management.
Assembly Neos 
CosmoLex Rank
#18 of 39
Rank
#4 of 39
Features
17/18
Features
17/18
Starting at
Custom
Starting at
$89/mo
User reviews
4.1/5 (80)
User reviews
4.3/5 (400)
What they cost
| Assembly Neos | CosmoLex | |
|---|---|---|
| Starting at | Contact for pricing | $89 /mo |
| Free trial | No | 10 days |
| Number of plans | Custom | 2 |
What the pricing really means
CosmoLex publishes their pricing upfront, which is a good sign. Assembly Neos requires you to contact sales for a quote. When a company hides pricing, it usually means the cost is high enough that they want a salesperson to justify it before you see the number. Always ask for total year-one cost, not just the monthly subscription.
Where Assembly Neos wins
- Purpose-built for plaintiff firms with medical provider tracking, lien management, and settlement disbursement sheets
- Intake module captures leads from web forms, phone calls, and referral sources with attribution tracking
- Workflow automation can move cases through stages automatically based on triggers and deadlines
- Integrates with medical record retrieval services
Where CosmoLex wins
- Only legal PM tool with full built-in accounting that genuinely replaces QuickBooks — not just a sync, actual double-entry bookkeeping
- Trust accounting and IOLTA compliance is the deepest in the market, with three-way reconciliation built in
- One subscription covers practice management + accounting + billing, which saves $50-100/month vs separate tools
- 10-day free trial to test whether the accounting features actually fit your workflow
Where Assembly Neos falls short
- No public pricing — custom quotes suggest mid-market pricing
- Only useful for plaintiff-side litigation — defense firms and transactional practices need to look elsewhere
- Fewer reviews and smaller user base than CASEpeer or Filevine
- The Neos brand (formerly known as LawRuler for CRM) can be confusing
Where CosmoLex falls short
- At $89/user as the only price tier, there's no cheaper entry point for firms that just want basic case management
- Interface is functional but not as polished as Clio or PracticePanther
- No court rule deadline calendaring built in
- CRM features require the $109/user plan, which pushes the price above most competitors
Who is each product built for?
Assembly Neos
Target: 5-100 attorneys
Assembly Neos competes with CASEpeer and Filevine for PI firm market share. It's a solid option if those two don't fit your workflow. Request demos from all three before deciding.
CosmoLex
Target: 1-15 attorneys
CosmoLex is the best choice if you're tired of reconciling between your practice management tool and QuickBooks. The built-in accounting is genuinely complete, not a half-baked add-on. Skip it if you already have an accountant who handles your books and you just need case management.
Feature comparison
| Feature | Assembly Neos | CosmoLex |
|---|---|---|
| Case Management | ||
| Case / matter management | ||
| Contact management | ||
| Conflict checks | ||
| Client intake forms | ||
| Client portal | ||
| Documents & Automation | ||
| Document management | ||
| Document automation | ||
| E-signatures | ||
| Email management | ||
| Billing & Accounting | ||
| Time tracking | ||
| Billing & invoicing | ||
| Trust / IOLTA accounting | ||
| Scheduling & Deadlines | ||
| Calendar management | ||
| Task management | ||
| Court rule deadlines | ||
| Platform | ||
| Reporting / analytics | ||
| Mobile app | ||
| API access | ||
Common questions
CosmoLex scores 8.0/10 vs Assembly Neos's 7.3/10 in our ranking. CosmoLex is the better pick for 1-15 attorneys. Assembly Neos is better if you need plaintiff litigation firms that need a case management system designed specifically for the plaintiff workflow — intake, medical records, settlement, disbursement.
Assembly Neos uses custom pricing (contact sales). CosmoLex starts at $89/month. Watch for add-on costs — the base price often does not include all features. Pricing last verified 2026-04-11.
Assembly Neos: No free trial. CosmoLex: Yes, 10-day free trial. Always test with your actual workflow before committing to an annual plan.
Assembly Neos covers 17 of 18 features we track. CosmoLex covers 17 of 18. Both are tied on feature coverage, but more features does not always mean better — pick the tool that covers what your business actually needs.
Yes, Assembly Neos has a mobile app. CosmoLex does too.
Yes. The main effort is migrating your data (customer lists, job history, invoices). Plan for 1-2 weeks of overlap where you run both. Most legal practice management tools can import CSV data. Ask both vendors about migration support before you sign.
The bottom line
Pick Assembly Neos if...
Plaintiff litigation firms that need a case management system designed specifically for the plaintiff workflow — intake, medical records, settlement, disbursement.
Pick CosmoLex if...
Solo and small firms that want accounting, billing, and trust compliance in one platform so they can ditch QuickBooks entirely.