Tint reminder attendance comparison
Compare observed attendance rates for two eligible booking groups. Results are descriptive, not proof a reminder caused a change.
Use the interactive tool without signing up. It runs in your browser: enter your numbers, save a comparison, download results or print a working copy. Your numbers are not sent to BlueFinch.
Illustrative example inputs
These starting values show how the math works. They are not industry averages, customer results or a quote.
| Input | Example value |
|---|---|
Eligible reminder-group appointments Appointments with an observed outcome in the selected reminder group. | 80 |
Attended reminder-group appointments Attended appointments within this same group. | 68 |
Eligible comparison-group appointments Appointments with an observed outcome in the comparison group. | 80 |
Attended comparison-group appointments Attended appointments within this comparison group. | 60 |
Example results
| Measure | Result |
|---|---|
Reminder-group attendance Attended divided by eligible reminder-group bookings. | 85% |
Comparison-group attendance Attended divided by eligible comparison-group bookings. | 75% |
Difference in percentage points Reminder-group rate minus comparison-group rate. This is not a relative percentage increase. | 10 |
Calculation detail
| Measure | Result |
|---|---|
| Reminder-group appointments not attended | 12 |
| Comparison-group appointments not attended | 20 |
Model assumptions
- Count appointments, not messages or replies.
- Use comparable booking definitions and observation windows.
- Attendance is distinct from installation completion.
- A zero denominator produces an unavailable rate.
- The model supplies no significance test, forecast or causal conclusion.
Read alongside these results
- Different appointment types, deposit policies or seasons might explain a difference.
- Read the underlying records before attributing a result to reminders.
Download this worked example (CSV). Use the interactive version to export your own inputs and results.
A customer replies to a reminder, but the vehicle never arrives. Another customer says nothing and drops off their truck on time. Measure the appointment outcome. A delivered message, a reply, an attended booking, and a completed job are different events.
The attendance comparison above uses recorded counts from two groups. The example has 80 appointments and 68 attended appointments in one group, then 80 appointments and 60 attended appointments in the comparison group. Attendance rates are 85% and 75%, a difference of 10 percentage points. These are illustrative figures, not tint-industry benchmarks or BlueFinch customer results.
Use with this guide
Review customer loyalty requirements
Check the paid product’s activation and messaging scope before choosing appointment communication software.
See the business dashboard
Review the available owner workspace and demo.
Document tint booking and deposit policies
Keep policy changes visible when comparing appointment outcomes.
Measure a tint loyalty program over the right return-visit period
A new loyalty enrollment is not a failed return visit. Define the qualifying job, customer unit and observation period before measuring a long-cycle tint offer.
Browse the complete window tint guides and worksheets.
Choose the appointment you will count
Assign a stable identifier to each booking. Keep the vehicle, service requested, agreed arrival time, booking date, and status in your scheduling system. Count appointments, not phone calls or messages. Several reminders still refer to one appointment. Use a consistent rescheduling policy so the same planned job does not become several supposed no-shows.
Define attended before reviewing the numbers. Here, attended means the customer arrived for the booked appointment under your shop’s written reporting rule. Record completed installations separately. Someone arriving with an unsuitable vehicle surface still attended, even if the quoted job was not completed. Staff should not change attendance status to improve a campaign report.
Keep timing and booking context visible
Record whether the appointment received the planned reminder, when the reminder was sent, and whether the service confirmed delivery. Unknown delivery status is not delivered. Keep replies and scheduling changes with the corresponding booking. An appointment created after the reminder cutoff needs a separate timing category rather than an unexplained exception.
Same-day bookings differ from appointments made weeks ahead. Fleet drop-offs, weekend slots, service duration, and booking lead time also affect comparisons. Review similar booking conditions and observation periods. Comparing urgent same-day appointments with future fleet projects tells you little about the wording of a reminder. Keep those groups separate in the report.
Use the right denominator
For each group, enter eligible appointments with a known scheduled outcome and the number recorded as attended. Divide attended appointments by eligible appointments in the same group. Do not use messages sent as the denominator. Several messages per booking would distort the result. With no eligible appointments, the tool reports an unavailable rate instead of zero attendance.
The difference is reminder-group attendance minus comparison-group attendance, in percentage points. A 10-percentage-point difference is not a 10% relative increase. This worksheet calculates neither statistical significance nor a causal effect. NIST’s guidance on comparing proportions describes formal tests and different approaches for small samples. A descriptive difference on this page is not such a test.
Sources for this section: NIST: Comparing proportions from two processes
Compare a change without hiding the other changes
Record the reminder wording, timing, booking policy, and observation dates before reviewing results. A before-and-after comparison often includes other changes. A new deposit policy, a busier season, or a different appointment mix might explain the difference. Include those details in the report. Do not credit every additional attended appointment to a text message.
For a disciplined pilot, use a documented assignment process and keep basic service information available to everyone. Do not withhold required instructions or promised confirmations to create a test. If you need a defensible causal result, seek help with the comparison design and analysis. This worksheet supports a review of recorded outcomes and questions worth investigating.
Give the front desk an action from the report
Inspect booking records before changing your promotion. Was the address clear? Did the message include the correct arrival time? Were reschedules reaching the scheduler? Did staff know who needed a callback? An incorrect contact field or a changed date left in another system might explain the failure. Fix the handoff before sending more messages to a stale list.
BlueFinch customer loyalty is an optional paid product with activation and messaging requirements. The demo does not establish a connection to your tint-shop scheduler or promise appointment-reminder automation. Review the product scope before choosing a communication tool. Respect contact preferences and marketing opt-outs. Keep the scheduling system as the attendance record, then bring the exported comparison to your front-desk review.
Sources for this section: BlueFinch: Customer loyalty availability and terms · BlueFinch: Business dashboard scope and demo
Primary sources
BlueFinch last reviewed these sources on October 3, 2026. Payment rules and state requirements can change.
- NIST: Comparing proportions from two processes
- BlueFinch: Customer loyalty availability and terms
- BlueFinch: Business dashboard scope and demo
Use this page for general business information. It is not legal, tax, or accounting advice.