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Moat or Bloat

Tip Calculator App

Calculate tip amount and total bill per person dynamically

Web app Rated 7 Oct 2026Dormant

Link
roobiwebdev.github.io/Day-38-Tip-Calculator-App-
Built by
Dev Nerd

Bloat

82/500

Where it landed on the scale

Bloat
0
Float
300
Moat
400

Summary

This is a practice project, a Frontend Mentor tip calculator clone built for a coding challenge. It works, but it has no distinct problem, no payment path, and nothing that can't be rebuilt in an afternoon. It was posted once in Oct 2024 with no activity since.

Bloat · Not much here works or looks likely to last, yet.

Breakdown

Five measures, 100 points each. Open the receipts under any of them to see the posts and pages behind the points.

Viability

Is there a real problem, someone who would pay, and a market this builder can actually reach?

A learning exercise rather than a product: there is no user to serve and no way to charge anyone. The tool is also dollar-denominated and shows no local adaptation.

6/100

Rubric 0–20No clear problem or user. A toy, a practice clone, or a solution looking for a problem.

Receipts (2)

  1. Framed as 'Day 38 of #100DaysChallenge', a practice exercise rather than a product for a defined user.

    “Day 38 of #100DaysChallenge Good morning, everyone ☀️ Today’s project is another exciting one. Project Name: Tip Calculator App This app allows users to quickly calculate the tip amount and the total bill per person by entering the bill amount, choosing a tip percentage, and specifying the number of people. It's clean, simple, and effective, with dynamic updates as inputs change. Technologies U”

    Post · @DevNerd0 · 23 Oct 2024 · open on Telegram (opens in a new tab)

  2. The page shows only a calculator with $0.00 defaults, with no accounts, payments or local-market adaptation.

    Checked 7 Oct 2026 · roobiwebdev.github.io/Day-38-Tip-Calculator-App- (opens in a new tab)

Moat

What stops someone copying it?

A basic tip calculator that anyone could rebuild in an hour or two; there is no data, integration or distribution advantage.

3/100

Rubric 0–20A thin wrapper or a clone that anyone here could rebuild in a weekend.

Receipts (2)

  1. The post describes plain HTML, CSS and JS with simple arithmetic and no proprietary component.

    “Day 38 of #100DaysChallenge Good morning, everyone ☀️ Today’s project is another exciting one. Project Name: Tip Calculator App This app allows users to quickly calculate the tip amount and the total bill per person by entering the bill amount, choosing a tip percentage, and specifying the number of people. It's clean, simple, and effective, with dynamic updates as inputs change. Technologies U”

    Post · @DevNerd0 · 23 Oct 2024 · open on Telegram (opens in a new tab)

  2. The page title 'Frontend Mentor | Tip calculator app' shows it follows a public design challenge, so many identical copies exist.

    Checked 7 Oct 2026 · roobiwebdev.github.io/Day-38-Tip-Calculator-App- (opens in a new tab)

Momentum

Did the updates keep coming?

Shipped once, on 2024-10-23, as one day of a challenge series, and nothing has followed in about two years, so there is no sustained shipping.

0/100

  • Sustained shipping0/60

    Worked on across 0 days.

  • Consistency0/40

    Updates in 1 of 1 month.

  • Quiet

    No update for 714 days — scaled to 20%.

Receipts (1)

  1. Earliest post about it.

    “Day 38 of #100DaysChallenge Good morning, everyone ☀️ Today’s project is another exciting one. Project Name: Tip Calculator App This app allows users to quickly calculate the tip amount and the total bill per person by entering the bill amount, choosing a tip percentage, and specifying the number of people. It's clean, simple, and effective, with dynamic updates as inputs change. Technologies U”

    Post · @DevNerd0 · 23 Oct 2024 · open on Telegram (opens in a new tab)

Infrastructure

Does a real, working product exist?

A small working calculator is live on GitHub Pages and does what it says, but it is a thin single-screen page with no backend, accounts or docs.

51/100

  • It's live20/20

    https://roobiwebdev.github.io/Day-38-Tip-Calculator-App-/ responded when checked.

  • HTTPS5/5

    Served over HTTPS.

  • Real product25/35

    The calculator is live and functional, with real-time updates, tip presets, a people count and reset, but it is a single-screen utility with minimal scope.

  • Own home0/10

    Only on a free subdomain or link-in-bio page.

  • Maintained0/15

    Last sign of shipping 2024-10-23.

  • Operations1/15

    A static page on GitHub Pages with a public repo; there is no backend, accounts, API, docs or status page.

Receipts (5)

  1. https://roobiwebdev.github.io/Day-38-Tip-Calculator-App-/ responded when checked.

    Checked 7 Oct 2026 · roobiwebdev.github.io/Day-38-Tip-Calculator-App- (opens in a new tab)

  2. The live page has bill input, tip percentages, number of people, per-person outputs and a reset button.

    Checked 7 Oct 2026 · roobiwebdev.github.io/Day-38-Tip-Calculator-App- (opens in a new tab)

  3. The post describes input validation and dynamic calculation as implemented features.

    “Day 38 of #100DaysChallenge Good morning, everyone ☀️ Today’s project is another exciting one. Project Name: Tip Calculator App This app allows users to quickly calculate the tip amount and the total bill per person by entering the bill amount, choosing a tip percentage, and specifying the number of people. It's clean, simple, and effective, with dynamic updates as inputs change. Technologies U”

    Post · @DevNerd0 · 23 Oct 2024 · open on Telegram (opens in a new tab)

  4. Facts show accounts false, status_page false and free_host true, so it is a static page only.

    Checked 7 Oct 2026 · roobiwebdev.github.io/Day-38-Tip-Calculator-App- (opens in a new tab)

  5. The post links the GitHub repo and the Pages deployment, the only operational footprint.

    “Day 38 of #100DaysChallenge Good morning, everyone ☀️ Today’s project is another exciting one. Project Name: Tip Calculator App This app allows users to quickly calculate the tip amount and the total bill per person by entering the bill amount, choosing a tip percentage, and specifying the number of people. It's clean, simple, and effective, with dynamic updates as inputs change. Technologies U”

    Post · @DevNerd0 · 23 Oct 2024 · open on Telegram (opens in a new tab)

Sustainability

Is it being set up to last?

It is on a free subdomain with no payments, support contact or policies, and it was built as a practice exercise with no path to revenue or ongoing commitment.

22/100

  • Distribution12/30

    A site on a free subdomain.

  • Payments0/15

    No payment provider found.

  • Pricing10/10

    A pricing page or stated prices on the site.

  • Revenue0/5

    There is no mention of customers or revenue, and no payment provider was found.

  • Privacy policy0/7

    No privacy policy found.

  • Terms0/5

    No terms of service found.

  • Support0/8

    No support contact found.

  • Commitment0/20

    It is a single post in a daily challenge series with no roadmap, team, dedicated channel or follow-up; the last activity was in Oct 2024.

Receipts (3)

  1. A site on a free subdomain.

    Checked 7 Oct 2026 · roobiwebdev.github.io/Day-38-Tip-Calculator-App- (opens in a new tab)

  2. Facts show an empty payments list.

    Checked 7 Oct 2026 · roobiwebdev.github.io/Day-38-Tip-Calculator-App- (opens in a new tab)

  3. The only post is one day of a challenge; it is not a standalone project with a roadmap.

    “Day 38 of #100DaysChallenge Good morning, everyone ☀️ Today’s project is another exciting one. Project Name: Tip Calculator App This app allows users to quickly calculate the tip amount and the total bill per person by entering the bill amount, choosing a tip percentage, and specifying the number of people. It's clean, simple, and effective, with dynamic updates as inputs change. Technologies U”

    Post · @DevNerd0 · 23 Oct 2024 · open on Telegram (opens in a new tab)