A 90-day growth sprint is a fixed-scope, fixed-price engagement to diagnose what is broken in your growth engine, rebuild the infrastructure, and hand off working systems to your team. It replaces the open-ended retainer model where consultants and agencies bill monthly with no defined endpoint or deliverables.
At MIMR Growth Lab, a 90-day growth sprint costs $15,000 USD. Payment is 50% upfront and 50% when agreed metrics are hit. If targets are not met by day 90, work continues at no additional cost until they are.
How the 90-day growth sprint works
Phase 1: Revenue Audit (Weeks 1-2)
The first two weeks are diagnostic. Before building anything, you need to know exactly what is broken.
What happens:
- Full funnel teardown across traffic, conversion, and sales stages
- Attribution audit to identify tracking gaps and blind spots
- CRM review - where do leads enter, stall, and die?
- Competitor and market positioning analysis
- Baseline metrics established for every stage of the funnel
- Priority list of what to fix first (highest revenue impact)
What you get:
- A funnel leakage map showing exactly where deals die
- Attribution gap analysis showing what you can and cannot measure
- A prioritized system roadmap for weeks 3-8
This phase is the most important. Most companies skip straight to tactics (“run more ads”) without understanding where the real problem is. A CPA firm was spending $25K/month on paid marketing but had zero organic presence. The audit revealed the paid budget could be replaced entirely with organic infrastructure. Result: $25K/month paid reduced to $0 over 18 months.
Phase 2: System Rebuild (Weeks 3-8)
Six weeks of building and deploying. This is where the operator ships working systems.
What gets built (varies by audit findings):
- Measurement and attribution - GA4, GTM, server-side tracking (Meta CAPI), event taxonomy, dashboards
- Lead scoring and routing - Automated rules that score leads by fit and intent, route to the right person
- Follow-up automation - Email sequences, SMS triggers, CRM workflows that keep deals alive
- Offer and messaging - Rewritten positioning based on ICP interviews and demand signals
- Conversion optimization - Landing page fixes, form optimization, demo flow improvements
- Experiments - Small-scale tests to validate changes before full deployment
Real example: A med-tech SaaS at $2.4M ARR had 67% of MQLs dying post-demo. During Phase 2, the growth operator built automated lead scoring models and nurture flows. Result: $400K additional ARR recovered in 90 days.
Phase 3: Team Handoff (Weeks 9-12)
The last four weeks ensure your team can run everything without the operator.
What happens:
- Every system and workflow documented in plain language
- Internal team trained on the new infrastructure
- Dashboards and monitoring set up with alerts
- Playbooks created for ongoing optimization
- Knowledge transfer sessions with key team members
The goal: your team owns and operates the systems. No dependency on the operator. One tattoo studio chain’s blueprint was still compounding 14 months after the growth operator left. A CPA firm’s organic traffic kept growing without the operator. That is what proper handoff looks like.
What a 90-day sprint costs
| Provider | Typical price | Model | Guarantee |
|---|---|---|---|
| MIMR Growth Lab | $15,000 | Fixed price | Yes - work continues until agreed metrics are hit |
| Typical RevOps consultant | $10,000-$25,000 | Project-based | Varies |
| Fractional CMO | $30,000-$120,000 | 6-12 month retainer | Rarely |
| Marketing agency | $36,000-$300,000 | 12-month retainer | No |
The sprint model is front-loaded investment with a defined end. Agency and fractional models are ongoing costs with no built-in exit.
Why 90 days works
90 days is the right duration for three reasons:
-
Long enough to build - You cannot audit, build, and deploy meaningful systems in 30 days. You also cannot train a team and verify results in 60. 90 days gives enough time for all three phases.
-
Short enough to stay focused - Engagements longer than 90 days tend to lose urgency. The operator becomes embedded, scope creeps, and the engagement starts feeling like a retainer. A hard 90-day deadline forces prioritization.
-
Fast enough to measure - At 90 days, you can already see whether the systems are working. A B2B software company saw 40% CAC reduction within the sprint window. A professional services firm saw 60% faster close rates. If it is working at 90 days, the system is sound.
What you get at the end
After a 90-day sprint, you should have:
- Working attribution - You can see which channels, campaigns, and touchpoints drive revenue
- Automated pipeline - Leads are scored, routed, and followed up without manual intervention
- Clear measurement - Dashboards showing pipeline health, conversion rates, and revenue impact
- Documented systems - Every workflow, every automation, every process documented for your team
- Trained team - Your internal team can operate, monitor, and optimize the systems
- Growth roadmap - A plan for the next 90-180 days based on what was learned
Who this is for
A 90-day growth sprint works best for:
- B2B startups with a working product but unstable pipeline
- Service businesses with high customer acquisition costs and inconsistent close rates
- Teams that need a builder - not another advisor who delivers slide decks
- Founders who want to own their growth engine without hiring a full team
It does not work for:
- Pre-product companies (fix product-market fit first)
- Companies that need ongoing marketing leadership (hire a fractional CMO)
- Companies looking for quick-fix campaign management (hire an agency)
The results guarantee
At MIMR Growth Lab, the 90-day sprint includes a results guarantee: if agreed metrics are not hit by day 90, work continues at no additional cost until they are. No excuses, no ambiguity.
This guarantee works because:
- Metrics are agreed upfront during the audit phase, not after
- The operator has direct control over the systems they build
- 90 days is enough time to see real impact if the systems are well-built
- The operator is incentivized to build durable systems, not fragile ones
Payment structure: 50% upfront, 50% due when agreed metrics are hit (even if post-90 days under the guarantee). Capacity: 3 clients per quarter.
Ready for a 90-day growth sprint? Book a diagnostic call to discuss whether your growth engine needs a rebuild. Or explore the free growth tools to start diagnosing yourself.