App Overview

TPN and Tube Feeding - Nutricalc for RDs icon

TPN and Tube Feeding - Nutricalc for RDs

Sophia Yang · Medical

The simplest one-stop shop for clinical RDs.

$5.99 · In-app purchases

PRICE
$5.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.5
27 ratings · Top 15%

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 included15 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 TPN and Tube Feeding - Nutricalc for RDs: map the core Medical 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

Include advanced features like detailed nutrient breakdowns.

Assumption to check: Limited functionality for advanced calculations

Validate with people who use this workflow before building.

Hypothesis 2

Create a forum or support section within the app.

Assumption to check: No user community or support

Validate with people who use this workflow before building.

Hypothesis 3

Offer a free trial to attract more users.

Assumption to check: High upfront cost without trial

Validate with people who use this workflow before building.

Hypothesis 4

Allow users to save and customize their calculations for future use.

Assumption to check: Lack of personalization features

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

The simplest one-stop shop for clinical RDs. Designed by the experienced RDs at Stanford Hospital and Santa Clara Valley Medical Center to bring all nutrition support needs into the palm of your hand. Easily saves 10+ minutes per patient -- seriously, an RD's best friend. Based on daily routines across all types of patients, we jammed EVERYTHING we need into just 3 simple screens. We've thoroughly tested the app in our own daily routines over the past year, and can't imagine not having this app anymore. We've double-checked calculations many times and automated everything including tube feeding formulas where possible, so you don't have to. Screen 1: Quick Nutrition Needs -- Quickly determine BMI, IBW, kcal needs (both MSJ and Penn State, for on or off ventilation), and protein needs. Easily account for stress factor and protein multipliers. Screen 2: Instant Tube Feeds -- Determine total volume, kcal, gm protein, %kcal protein, gm CHO, %kcal CHO, and mL free H2O in literally seconds. Screen 3: Parental Nutrition (TPN) calculator -- Input rate and duration, and either grams or percentage dextrose/amino acids/lipids to determine total volume, kcal, gm protein, gm CHO, GIR, and gm fat/kg. Works for both 2-in-1 and 3-in-1 methods. We made this app to fulfill our own biggest painpoints, but after realizing how indispensable it's become to us, we hope it's helpful for others now too. Feedback from clinical RDs is welcome! Just tweet us @NutricalcApp

Written user reviews are not shown here. Check current App Store reviews >

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.