This idea looks good on paper. Here's what could kill it.

We stress-test it across five make-or-break signals, then answer the one question no amount of analysis settles.

Idea reviewed

An app that lets small salons and barbershops take bookings online.

Explore full report Review my own idea

Not a pitch deck. Not encouragement. A decision.

  1. 1

    Where does the answer come from?

    Illustrative public-source signals for this sample. The source set changes with the idea.

    Verdict 71/100
    App-store reviews

    Owners praise the booking. Their staff complain about the rota.

    You can ship it
    Competitor pricing

    Most price per chair. The shops you are aiming at have two.

    Problem is real
    Who they are hiring

    Several are still hiring salon sales. Nobody has won this yet.

    Buyer is reachable
    Owner forums

    The loudest complaint is not booking. It is no-shows. That makes this a deposits-and-reminders product, not a booking one.

    You can ship itRegulatory exposure

    Four readings, one number. Hover or tab a node to see what it fed - illustrative for this sample; Runles reads public sources only.

  2. 2

    How does your idea score?

    71
    Problem is real84
    Buyer is reachable81
    You can ship it76
    Defensible for a while72
    Regulatory exposure46

    One low axis carries the score: a booking screen is straightforward to build. What each axis measures →

  3. 3

    Who's already doing this?

    Booksy74%
    Fresha66%
    Square Appointments51%
    Vagaro48%
    Mindbody44%
    Phone and paper diary38%

    How much each one already covers · model estimate.

  4. 4

    What would it take to build?

    Start
    Phase 1Weeks 1–3

    One booking page, one shop

    • Build the booking screen
    • Get one shop to put it on their door
    no revenue yet
    DecisionGate

    Will a shop put it on their door?

    answer before Phase 2
    Stop here
    Phase 2Weeks 4–9

    Three shops taking real bookings

    • Watch whether customers stop ringing
    9 wksfirst version live
    Phase 3Weeks 10–14

    Ask them to pay

    • Free month, then a real invoice
    14 wksfirst payment
    Phase 4Weeks 15+

    Repeat it to eight shops

    • Below eight, luck looks like a pattern
    8 shopsenough to be sure
    Worth building

    $60–90k total to reach that answer, with one experienced engineer - not a team, and not enough to scale.

  5. 5

    The one question only you can answer

    Will owners who run on a paper diary actually switch?

    Every step above assumes they will. Call ten shops this week and ask what happened the last time they tried booking software.

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Your idea, same treatment.

The same five axes, the same sweep for who already ships it, and the same unresolved question at the end - run against whatever you are actually thinking about building.

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