Customer Retention Intelligence · Metro Manila → Global

A 5-point lift in retention
can compound to 25–95% in profit.

Upload your customer data. Diagnose where churn begins. See where each cohort falls off the lifecycle. Model recovery with auditable math — calibrated to your industry, your currency, and your stage on Rogers' diffusion curve.
Sources: Reichheld & Sasser (Harvard Business Review, 1990); Fogg (Stanford, 2009); Rogers (1962).

No login required Runs in your browser Live FX conversion
Always freeWhat you get without paying anything
A complete retention diagnosis — every chart, every formula, every benchmark — plus your two highest-priority actions in full detail.
✓All 8 tabs unlocked: Profile, Diagnose, Insights, Lifecycle, Funnel, Market, Project, Playbook.
✓Full Sean Ellis PMF score, Fogg behavior diagnosis, and Rogers diffusion placement.
✓Live CLV, NRR, GRR, LTV:CAC, and CAC payback formulas with substituted inputs.
✓Top 2 prioritized actions with full descriptions, effort scores, and follow-through trackers.
✓Editable top-down and bottom-up market sizing in your selected currency.
✓CSV / JSON upload, 24-month cohort survival curve, and recovered-revenue projections.
Pricing · transparent, one-time

Two ways to use Retention Inertia. The diagnostic is permanently free.

Always free
Free Diagnostic
₱0forever · no card required
A complete retention diagnosis — every metric, every chart, every benchmark. Top 2 prioritized actions in full detail with follow-through trackers.
  • All 8 tabs unlocked: Profile, Diagnose, Insights, Lifecycle, Funnel, Market, Project, Playbook
  • Full Sean Ellis PMF score, Fogg Behavior Model, Rogers Diffusion placement
  • Live CLV, NRR, GRR, LTV:CAC, CAC payback formulas with substituted inputs
  • Top 2 prioritized actions with descriptions, effort scores, follow-through chips
  • CSV / JSON upload, 24-month cohort survival curve, recovered-revenue projections
  • Cloud sync via magic link · resume from any device
Founder Unlock · introductory
Full Action Playbook
₱175₱275one-time · lifetime access
Everything in Free, plus the full prioritized action sequence with cause-mapped diagnostic context, complete descriptions, and CSV export. Built for founders who need an executable plan, not just a report.
  • Everything in Free, plus:
  • All prioritized actions unlocked — typically 8–14 moves ranked by Impact² × (6 − Effort) ÷ (Weeks + 1)
  • Cause-mapped diagnostic rationale for every action (gate-tied, pattern-tied, lifecycle-tied)
  • Per-action follow-through tracker — log "ran" / "moved the metric" / "no movement"
  • CSV export of the full prioritized playbook for your team / board pack
  • PMF-recovery sub-playbook automatically surfaced when fit is weak (Steve Blank methodology)
Introductory price for the first 100 founders. Standard price ₱275. No subscription, no renewal.
Founded by
Rovelyn An Caoile
Customer retention strategist · Metro Manila, Philippines · Building the operating system for retention-led growth in emerging markets.
25–85%
Profitability uplift from a 5pp retention gainReichheld & Sasser, Harvard Business Review (1990)
6 Gates
Probabilistic decision tree with calibrated risk scoring
10 Currencies
Live ECB FX rates · including Philippine Peso
What you get

Every metric, every pattern, every action — quantified, sourced, auditable.

One-click data upload
Drop a CSV or JSON of your KPIs. Smart column mapping pre-fills every slider, gate, and chart across all eight tabs. No copy-paste.
Live formula engine
CLV, NRR, GRR, LTV:CAC, CAC payback recompute in real time as you move each input. The math is visible — no spreadsheets, no opaque scoring.
Pattern + behavior detection
Six churn patterns plus Fogg's Behavior Model (B = MAT) overlaid on a six-stage customer lifecycle, with explicit fall-off triggers per stage.
Diffusion of Innovations layer
Place your customer base on Rogers' adoption curve — Innovators, Early Adopters, Majority, Laggards — with stage-matched retention plays.
Editable market sizing
Top-down (TAM·SAM·SOM, all editable) and bottom-up (population × conversion × ACV per segment), both reconciled live with your selected currency.
Prioritized action playbook
Ranked by Impact² × (6 − Effort) ÷ (Weeks + 1). Top 2 actions are free with full descriptions and follow-through trackers; the rest unlock once at ₱175 introductory.
Step 1 of 8 · Set baseline
Company profile
Upload your data or set baseline metrics manually. Every formula, lifecycle stage, and projection updates instantly. Currency conversions apply live using real-time ECB rates.
Auto-fill from your data
Drop a CSV or JSON. Smart column mapping pre-fills every input across all eight tabs. Local-only — your file never leaves the browser unless you opt in to the founder data store.
or drag & drop
Accepted columns: arpu, customers, monthly_churn_pct, cac, gross_margin_pct, referral_pct, nps, lifecycle_stage, segment_population, segment_acv, segment_conv_pct
Live formula engine
Step 2 of 8 · Diagnose
Retention diagnostic
Complete the six gates to compute your churn risk score and diagnosed retention state. Calibrated against findings from Reichheld & Sasser (HBR, 1990) and Bain's Net Promoter research.
Step 3 of 8 · Insights
Pattern analytics
Analytical patterns auto-detected from your profile, each quantified by estimated annual revenue impact in your selected currency.
Industry benchmark comparison
Step 4 of 8 · Behavioral lifecycle · relationship state
Customer lifecycle & behavior
Lifecycle answers why people drop off. Six relationship stages (Awareness → Activation → Engagement → Loyalty → At-Risk → Churn) overlaid with Fogg's Behavior Model (B = MAT — Behavior occurs when Motivation, Ability, and a Trigger converge) and Rogers' Diffusion of Innovations curve. Identify the behavioral cause of fall-off and the precise trigger required to retain.
Lifecycle vs Funnel · This tab tracks relationship health and behavioral causes across six stages, including post-purchase (Loyalty, At-Risk, Churn). The Funnel tab tracks conversion mechanics — the percentage that moves between consecutive acquisition steps. Both are required: one diagnoses, the other measures.
Six-stage customer lifecycleⓘ
Fogg behavior model · per stageⓘ
Diffusion of Innovations · adoption curveⓘ
Sources: BJ Fogg, "A Behavior Model for Persuasive Design" (Stanford Persuasive Tech Lab, 2009); Everett M. Rogers, Diffusion of Innovations (Free Press, 1962, 5th ed. 2003); Reichheld, The Loyalty Effect (HBS Press, 1996); Christensen, Competing Against Luck (HarperBusiness, 2016).
Step 5 of 8 · Conversion funnel · acquisition mechanics
Conversion funnel — stage-to-stage volume
Funnel answers how many move forward. A linear acquisition pipeline (Awareness → Acquisition → Activation → Retention → Revenue → Referral) showing the percentage of users who progress between consecutive stages, the absolute volume at each step, and the dollar value leaking at every drop-off. Distinct from the Lifecycle tab, which traces the behavioral causes.
Stage-to-stage conversionⓘ
↻ Referral loops back to Awareness — every promoter funnels organic Awareness back into the top of the bar
Conversion-rate health thresholdsⓘ
Step 6 of 8 · Sizing
Market sizing
Calculate your addressable market two ways. Top-down (TAM·SAM·SOM, every value editable). Bottom-up (population × conversion × ACV per segment, every value editable). Both update live with FX.
Step 7 of 8 · Project
Retention projections
Set your improvement targets. Three scenarios (conservative, target, optimistic) project simultaneously, with embedded formulas and visualized trajectories.
Embedded projection formulasⓘ
Customer trajectory — three scenariosⓘ
No program Conservative Target
24-month cohort retention survival curveⓘ
Current Target Industry median
Monthly revenue recoveredⓘ
NRR trajectory — current vs targetⓘ
Step 8 of 8 · Action playbook
Action playbook
Personalized actions ranked by priority score: Impact² × (6 − Effort) ÷ (Weeks + 1). Cause-mapped to your diagnosed lifecycle stage, churn pattern, and Fogg trigger gap. Top 2 actions are always free with full descriptions and follow-through trackers. The rest are shown as peek previews — title, primary tag, and estimated annual impact — and unlock for ₱175 introductory (₱275 standard).
Retention Inertia
© 2025 · Founded by Rovelyn An Caoile · Metro Manila, Philippines · Send feedback → rcaoile.mib2023@aim.edu
References: Reichheld & Sasser (HBR, 1990 — industries ranged 25–125% profit lift from a 5pp retention gain) · Heskett et al. (HBR, 1994) · Reichheld (1996, 2003) · BJ Fogg (Stanford, 2009) · Rogers (1962, 5th ed. 2003) · Christensen (2016) · Blattberg et al. (2008) · Kotler & Keller (2016) · Chen & Guestrin (2016) · Sean Ellis (First Round Review, 2017) · Vohra / Superhuman (First Round, 2018) · Balfour (Reforge, 2017) · Bessemer State of the Cloud (NRR > 120% benchmark) · Wharton Customer Analytics (referral lift 3–5×).