App Overview

Machinist Journeyman icon

Machinist Journeyman

smartcalculations · Business

Machinist Journeyman was just updated with new features to give you the best app possible

$9.99 · In-app purchases

PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.3
19 ratings · Top 30%

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 included17 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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Free quick prompt For a smaller starting point

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 Machinist Journeyman: map the core Business 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

Offer more diverse calculators and customization options.

Assumption to check: Limited calculator options compared to competitors

Validate with people who use this workflow before building.

Hypothesis 2

Simplify UI and improve the categorization of calculators.

Assumption to check: Cluttered interface with too many options

Validate with people who use this workflow before building.

Hypothesis 3

Implement clearer pricing structures and features for each tier.

Assumption to check: In-app purchases can be confusing

Validate with people who use this workflow before building.

Hypothesis 4

Provide comprehensive tutorials and customer support options.

Assumption to check: Lack of user support and resources

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

Machinist Journeyman was just updated with new features to give you the best app possible. You will be amazed by the amount of "I Use it Everyday" content in this app. Featured in several Trade Publications, this app is surfacing quickly as the obvious choice for assisting in dozens of everyday Machine Shop Calculations. *METRIC VERSION NOW IN APP STORE* Search for "Machinist METRIC Journeyman" Striving for a User-Friendly Experience, the Journeyman brings you the desired calculations for Chip Thinning Milling Calculations, Circular Interpolation Feed Adjustments, Tapping Feeds, Trig Functions, Sine Bar, Metric & Inch Conversions, Tap Drill Sizes, Desired Spot Drill & C'Drill Diameter by Depth and much more. The "Machinist Journeyman" includes:: "Picker" Style Decimal-Drill Chart "Picker" Style Centerdrill Info MILLING SECTION IPM FEEDS: *RPM & IPM *SFM & FPT *Radial Chip Thinning *Ballnose Chip Thinning *45 Degree Lead Angle Chip Thinning *Tap Speed & Feed *Threadmill G-Code Program Generator *Toroidal Milling MILLING SECTION IPR FEEDS: *RPM & IPR *SFM & FPT *Radial Chip Thinning *Ballnose Chip Thinning *45 Degree Lead Angle Chip Thinning *Tap Speed & Feed MILLING MISC: *RPM *SFM *Internal Circular Interpolation Feed Adjustments *External Circular Interpolation Feed Adjustments TURNING SECTION: *RPM *SFM *Helix Angle and Proper Anvil Selection for Laydown Threading Systems *Thread Reference Point *Length to Diameter Ratio *Smallest Effective Dia for desired SFM based upon Max RPM *G97 to G96 Constant SFM Calculations *Surface Finish Calculation DRILLING SECTION: *Drill Point Length *Spot Drill Depth for Desired Diameter *Center Drill Depth for Desired Diameter *Center Drill Dimension Information *Tap Drill Sizes for: NPT, NPS, BSPT & BSPP *Tap Drill Sizes Calculations for: * Cut Tap Inch * Cut Tap Metric *Form Tap Inch *Form Tap Metric Allows you to calculate Special Thread Specifications, not choosing ONLY from a pre-determined list MATH: *NEW* CNC Bolt Circle Calculator, 72 Holes, 3 O'Clock is Zero Degrees and goes Counter ClockWise in Rotation. Bolt Circle Calculator *Right Triangle Trig Section *Sine Bar Height *Dimensions for + and - Tolerances *Dimensions for + and + Tolerances *Dimensions for - and - Tolerances (Thanks Dave for the Idea) CONVERSION SECTION: *IN / MM *HP / KW *LB/ KG *Temperature *Torque *Square Across Corners *Hex Across Corners *Length to Diameter Ratio *MM Pitch to Threads per Inch ESTIMATING CALCULATIONS: *Qty. of Inserts *Per Part Tool Cost *Lathe Cut Time *Mill Cut Time *Manual Mill Feeds *Production Hours Needed for Job *Feet of Material Needed SALESMAN CALCULATIONS: *Profit Margin *Sell / Cost / Profit *Off List Discount REFERENCES: *NEW* Inch Size Screw Thread Info up to 1-1/4" diameter *GD&T Symbol Chart *Rockwell C to Brinell Hardness INFORMATION: *Highlighting articles that the Developer has had published which explains certain machining processes. Future updates will include Video Training Sessions. Focusing on a User-Friendly Layout, the Journeyman will continue to grow as more areas are developed and will be released as FREE Updates. Besides just producing the numbers you desire, the Journeyman illustrates certain theories while trying to educate users not familiar with these concepts. This training concept will be continued as the app grows. Visit www.smartcalculations.com to see more. NOTE: We suggest to periodically turn your device off and let it clear any stranded memory. The app will load every time after doing this small step.

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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.

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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.