IN PLAIN ENGLISH
Is a screen-time tool worth the money and setup time?
This calculator answers three ordinary questions: How much screen time might I actually get back? What does the tool cost for each hour saved? How many days will it take for the saved time to repay the hours I spent setting it up? With the default example, reducing daily use from 240 to 150 minutes, following the plan 70% of the time, and paying $30 per month gives about 6.3 hours back each week, costs about $1.10 per saved hour, and repays 3.5 setup hours in about 5 days. It does not tell you what a healthy screen-time target is, and it does not claim you will earn money.
| Current-value line | Calculation | Result | How to read it |
|---|
Detailed calculation process
Formula, declared symbols, substitutions, intermediate results, and reconciliation
Rd = (C - T)a; Rw = Rd x d / 60; Rm = Rw x (365.2425 / 7 / 12); K = F / Rm; Em = Rm - F / v; Bdays = (h / Em) x (365.2425 / 12)
First, the calculator estimates saved minutes and hours. Next, it divides the monthly tool fee by the hours saved. Finally, it uses your value for one saved hour only to compare the cash fee with setup time. That last field does not turn saved time into real income.
| Symbol | Meaning | Default | Unit |
|---|---|---|---|
| C, T | Current and target daily screen time | 240, 150 | minutes/applicable day |
| a, d | Expected follow-through and applicable days | 0.70; 6 | dimensionless; days/week |
| Rd, Rw, Rm | Expected reclaimed time by day, week, and average month | calculated | minutes/day; hours/week; hours/month |
| F | Recurring tool cost | $30 | USD/month |
| h, v | Setup effort and time-to-cost comparison rate | 3.5; $5 | hours; USD/hour |
| Bdays | Calendar-day estimate for setup effort to break even | calculated | days |
Default substitution: the 90-minute planned reduction becomes 63 expected minutes on each applicable day after 70% follow-through. That is 6.30 hours per week and 27.39 hours per average month. A $30 monthly fee therefore costs about $1.10 per reclaimed hour. At the separate $5/hour comparison assumption, the fee uses 6.00 of those monthly hours, leaving 21.39 time-equivalent hours to offset 3.5 setup hours in about 5.0 calendar days. No income is predicted.
Six-step break-even review
Start with time saved, then decide whether the fee is worth paying
- Measure a representative daily baseline without counting the same minutes twice across devices.
- Enter a target that removes optional use rather than required work, study, navigation, or accessibility time.
- Choose the days when the rule will actually apply and reduce the target gap with a realistic follow-through percentage.
- Read the expected daily, weekly, and monthly reclaimed-time results before looking at any dollar comparison.
- Compare the monthly fee with the “fee per reclaimed hour” result; this is the clearest cash measure on the page.
- Use setup break-even only as a final sensitivity check, then rerun lower follow-through or a higher fee before buying anything.
Five crossover fundamentals
Keep effort, cash, and subjective value separate
Setup effort
A one-time time investment that occurs before any expected saving is realized.
Recurring cost
The monthly cash outflow that must be deducted every month, even if adherence is poor.
Expected reclaimed hours
The target gap multiplied by days and adherence, not a guarantee of observed behavior.
Planning rate
A transparent personal comparison input; it is not a wage, billable rate, or health valuation.
No-crossover state
When recurring cost consumes all gross planning value, dividing setup effort would produce a misleading result.
Three break-even deep dives
Find the assumption that controls the decision
Target gap versus expected saving
A 90-minute gap is only the plan. At 70% follow-through, the model expects 63 minutes on each applicable day. Confusing these two figures overstates every downstream result.
Cash cost per reclaimed hour
Monthly fee divided by monthly reclaimed hours is observable and easy to compare. It does not require treating your time as wages and should normally be the first financial result you use.
Setup crossover sensitivity
The crossover combines setup hours and a recurring cash fee, so it needs a declared conversion rate. If a small change in that rate or follow-through removes the crossover, the decision is fragile.
Evidence record
Retain the product terms and observed follow-through
Save the baseline log, target rule, days covered, setup-task diary, subscription invoice, cancellation terms, adherence evidence, planning-rate rationale, and any replacement-activity costs. Record whether a free alternative was available.
Break-even limitations
What the crossover leaves unpriced
- The hourly planning value is subjective and must not be presented as a wage or market price.
- The model assumes the same average adherence and weekly pattern throughout the horizon.
- It excludes taxes, cancellation friction, device compatibility, replacement-activity costs, and maintenance effort unless included by the user.
- It does not predict a product’s effectiveness or compare privacy, security, accessibility, or content-control quality.
- It assigns no monetary value to sleep, mood, learning, development, safety, relationships, or medical outcomes.
Break-even glossary
Six decision terms
- Planned reduction
- The difference between current and target daily minutes before allowing for missed days or incomplete follow-through.
- Expected reclaimed time
- The planned reduction after applying the entered follow-through assumption and applicable-day schedule.
- Cost per reclaimed hour
- The recurring monthly tool fee divided by expected reclaimed hours for an average month.
- Time-equivalent fee
- The number of reclaimed hours represented by the monthly cash fee at the entered comparison rate.
- Setup break-even
- The estimated time needed for the positive monthly reclaimed-time balance to offset one-time setup hours.
- Sensitivity test
- A rerun with less favorable assumptions to see whether the purchase decision still holds.
Two break-even cases
A paid blocker and a free manual routine
$30 blocker with uncertain follow-through
With the default 240-to-150-minute target, six applicable days, and 70% follow-through, the estimate is 27.39 reclaimed hours per month. The $30 fee is therefore about $1.10 per reclaimed hour. The 5-day setup crossover is plausible only if those reclaimed hours actually occur.
Free device basket with more setup
A household uses no subscription but spends 8 hours agreeing rules, configuring devices, and preparing offline activities. With no monthly fee, the comparison rate is unnecessary; break-even depends directly on how quickly expected reclaimed hours offset those 8 setup hours.
Important note
Reclaimed time is not earned income
The model does not claim that reducing screen time produces money. Unless the reclaimed hours are actually used for paid work, the forecast income is $0. If use involves distress, lost control, unsafe interactions, sleep disruption, bullying, developmental concerns, or missed responsibilities, seek appropriate support rather than relying on a break-even result.
Break-even questions
Frequently asked questions
What does “break-even” mean on this page?
It is the estimated time needed for reclaimed hours, after allowing for the monthly fee, to offset the hours spent setting up the plan. It is not a promise that the tool will work.
Does the dollar result mean I will earn money?
No. The calculator predicts no income. The USD/hour field is only a conversion assumption that lets a cash fee and time effort appear in one comparison.
Which result should I look at first?
Start with expected reclaimed minutes per applicable day, weekly hours, and monthly fee per reclaimed hour. Use the setup break-even only if those estimates still look realistic.
Why is follow-through included?
A 90-minute target gap does not mean 90 minutes will actually be reclaimed. Follow-through reduces the planned gap to a more conservative expected amount.
What produces no break-even?
No break-even exists when the monthly fee consumes all of the time value assigned to the expected reclaimed hours. Lower follow-through or a higher fee can cause this state.
Can a free tool still have a cost?
Yes. A free blocker can still require setup, maintenance, household discussion, and replacement activities. Enter $0 for the fee while retaining the setup hours.
Should this be used for a child or a health decision?
No. It is an adult planning comparison, not a tool for pricing a child’s wellbeing or assessing sleep, mental health, development, safety, or clinical need.
Official context and related models