App Overview

BenchCalc icon

BenchCalc

Brandon Holt · Education

BenchCalc is the fast, modern chemistry calculator built for scientists, students, and lab workers who need quick, accurate results at the bench.

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

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Build Kit

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A product spec, screen plans, and build steps for your coding agent.

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What's included14 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

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Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for BenchCalc: map the core Education workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Expand calculator options and provide unique functionalities.

Assumption to check: Limited calculation types compared to competitors.

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to save favorite calculations or adjust settings.

Assumption to check: No user customization features.

Validate with people who use this workflow before building.

Hypothesis 3

Integrate sharing options for results and calculators.

Assumption to check: No social sharing or community features.

Validate with people who use this workflow before building.

Hypothesis 4

Include a validation process for user inputs and provide tips.

Assumption to check: Lack of feedback on calculation accuracy.

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

BenchCalc is the fast, modern chemistry calculator built for scientists, students, and lab workers who need quick, accurate results at the bench. MOLARITY CALCULATOR Calculate molar concentration from mass, molecular weight, and volume. Results auto-scale between M, mM, µM, and nM so you always see the most useful unit. DILUTION CALCULATOR (C1V1 = C2V2) Solve for any variable in the dilution equation. Select what you need — final volume, starting concentration, or anything else — and get your answer instantly. UNIT CONVERTER Convert between concentration (M, mM, µM, nM), mass (g, mg, µg), and volume (L, mL, µL) units with a single tap. CALCULATION HISTORY Every calculation is saved automatically. Review past results, copy them to your clipboard, or share with colleagues. Swipe to delete what you don't need. DESIGNED FOR THE LAB • Clean, modern interface that's easy to read at the bench • Full dark mode support for late nights in the lab • Haptic feedback confirms every calculation • Copy and share results instantly • No account required — just open and calculate PRIVACY FIRST No data collected. No analytics. No network requests. Your calculations stay on your device. Period. Built by scientists, for scientists.

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Screenshots

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
React Native
Expo
React Navigation
AsyncStorage
React Native Paper
Zustand
BUILD KIT DIFFICULTY
Starter

From the Build Kit assessment.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.