The Zovi ROI calculator is based on six revenue streams, conservative adoption rates and aggregated data from the DACH aesthetics industry. All assumptions, formulas and sources explained openly.
Last updated: July 2026 · Version 2.2
Before the individual streams, these fixed base values apply to all calculations:
| Parameter | Value | Rationale |
|---|---|---|
| Active patients (default) | 150 | Typical base of a mid-sized aesthetic clinic (survey 2024, n=240) |
| Avg. treatment value (AOV) | € 250 | Median AOV DACH aesthetics / cosmetics (industry report 2024) |
| Monthly visits per patient | × 0.18 | Avg. 2.2 visits/year → 0.18/month |
| Base revenue / month | Patients × AOV × 0.18 | Starting point for all relative calculations |
| Ramp-up over 6 months | 5% → 20% → 45% → 70% → 90% → 100% | Realistic adoption curve from 50 Zovi partner clinics |
Each stream is calculated independently and is additive. The percentages refer to the monthly base revenue unless otherwise stated.
Formula
Avg. 13% of active patients × €99 / month
Example · 150 patients · €250 AOV
With 150 patients: 20 members × €99 = €1,980 / month
Logic
In a Zovi survey of 50 DACH aesthetic and cosmetic clinics, the clinic owners themselves estimated how many of their active patients would convert to an attractive membership — the median self-assessment was 13%. We deliberately calculate conservatively with exactly these 13%. The membership price of €99 is the Zovi standard (adjustable). Revenue is monthly recurring, independent of the booking business.
Source
Zovi clinic survey 2025 (n=50 DACH clinics · self-assessment of expected membership conversion)
Formula
Base revenue × 18% × 32% conversion
Example · 150 patients · €250 AOV
Base revenue €6,750: €6,750 × 0.18 × 0.32 ≈ €389 / month
Logic
Automated win-back, birthday and post-visit campaigns reach 18% of inactive patients. Of these, 32% respond with a booking (conservative; Omnisend 2024 shows 33% for automated vs. 5.9% for manual campaigns).
Source
Omnisend Email & SMS Benchmark Report 2024; Klaviyo E-Commerce Benchmark 2023
Formula
Base revenue × 17%
Example · 150 patients · €250 AOV
Base revenue €6,750: €6,750 × 0.17 ≈ €1,148 / month
Logic
Klarna increases AOV by approx. 10% (Klarna Merchant Report 2023) and raises booking frequency by approx. 7% through installment payments. Combined effect: +17% on base revenue.
Source
Klarna Merchant Impact Report 2023; Zovi pilot data Q4 2024
Formula
Base revenue × 12%
Example · 150 patients · €250 AOV
Base revenue €6,750: €6,750 × 0.12 ≈ €810 / month
Logic
Loyalty programs increase the repeat visit rate by 12% (Harvard Business Review: +5% retention = +25-95% profit increase). Referral programs are calculated conservatively at 1 new customer per 15 active members.
Source
Harvard Business Review "The Value of Keeping the Right Customers" 2014; Bond Loyalty Report 2023
Formula
Base revenue × 6%
Example · 150 patients · €250 AOV
Base revenue €6,750: €6,750 × 0.06 ≈ €405 / month
Logic
AI-powered personalized offers and abandonment recovery for incomplete bookings. 6% is calculated conservatively; studies show 10-15% for cart abandonment recovery in similar industries.
Source
Barilliance Cart Abandonment Report 2023; Klaviyo Benchmark 2024
Formula
Base revenue × 4%
Example · 150 patients · €250 AOV
Base revenue €6,750: €6,750 × 0.04 ≈ €270 / month
Logic
Push reminders and deposits reduce no-shows by approx. 40% (internal clinic data). At an average no-show rate of 10% and an appointment value of €250, this corresponds to approx. 4% of secured additional revenue.
Source
Internal Zovi clinic data 2024; Journal of Medical Practice Management 2022
For clinic groups, a coordination bonus is applied that reflects the efficiency gains from central management.
Formula
Bonus = 1 + (number of locations − 1) × 0.5%, max. 50%
Each additional location brings 0.5% more efficiency through shared campaigns, central patient profiles and cross-location loyalty. The bonus is capped at 50% (= 100 locations).
Source: McKinsey Digital "Unlocking the full potential of multi-location retail" 2022; internal Zovi enterprise pilot data 2025
| Locations | Bonus | Total factor |
|---|---|---|
| 2 | +0.5% | ×1.005 |
| 5 | +2% | ×1.020 |
| 10 | +4.5% | ×1.045 |
| 50 | +24.5% | ×1.245 |
| 100 | +50% (max) | ×1.50 |