App Overview

NabixSoft Invoice Maker icon

NabixSoft Invoice Maker

Nabeel Mumtaz · Business

**NabixSoft Invoice — Invoices & Estimates, Offline**

$3.99 · In-app purchases

PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
1 ratings · Top 5%

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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Combine features and design from your favorite apps.

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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 NabixSoft Invoice Maker: 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

Allow users to customize templates and styles.

Assumption to check: Limited customization options for invoices

Validate with people who use this workflow before building.

Hypothesis 2

Implement recurring invoice feature.

Assumption to check: No support for recurring invoices

Validate with people who use this workflow before building.

Hypothesis 3

Add payment tracking and reminders.

Assumption to check: Lack of payment tracking

Validate with people who use this workflow before building.

Hypothesis 4

Provide analytics on invoice status and payment history.

Assumption to check: No analytics for invoices sent

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

**NabixSoft Invoice — Invoices & Estimates, Offline** Create unlimited invoices and estimates without an account, a subscription, or an internet connection. Your business data stays on your device. **One-time purchase. Own it for life.** No subscription, no recurring fees, no account required. Pay once and create unlimited invoices and estimates. **UNLIMITED INVOICES & ESTIMATES** • Create unlimited invoices and estimates • Auto-numbered documents so you never duplicate a number • Convert an accepted estimate into an invoice in one tap • Track status: Draft, Sent, Accepted, Rejected, Expired, Void, Paid, Unpaid • Recurring invoices — weekly, monthly, or yearly • Automatic subtotal, tax, and total calculation **16 PROFESSIONAL PDF TEMPLATES** Choose a style that fits your trade — Modern, Contractor, Repair Shop, Consultant, Field Service, Studio, Executive, Retail, Wellness, and more. Your logo, signature, and payment details carry over automatically. **ADD YOUR OWN PAYMENT DETAILS** NabixSoft Invoice doesn't process payments. Add the payment information your customers already use: • E-transfer email address • A payment link you provide • A QR code generated from your link, printed on the invoice • A payment note for cheques, cash, or anything else **CUSTOMERS, CATALOG & EXPENSES** • Save customer details — search, sort, and filter anytime • Generate paid/unpaid customer statements • Build a catalog of products and services, with starter items included • Track expenses by vendor, category, and receipt photo **KNOW YOUR NUMBERS** • Dashboard totals for sales, unpaid, paid, expenses, and net profit • Sales-by-status and expenses-by-category charts • Monthly trend view • Search across invoices, estimates, customers, items, and expenses **OFFLINE-FIRST & PRIVATE** No account, no login, no server. Your business profile, customers, documents, and expenses are stored locally on your device. Export a full backup anytime, including a year-end export, and restore it on a new device. **BUILT IN CANADA** • English and Canadian French interface • Bill in CAD or USD • Set your own tax name and rate **EVERYDAY DETAILS** • Print, share, or email any PDF from the app • Business logo and signature on every document • In-app support and FAQs NabixSoft Invoice is built for tradespeople, freelancers, and small service businesses who want to look professional and get paid — without ongoing fees. Questions? [email protected]

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.

SUGGESTED BUILD STACK
React Native
Expo
Supabase
react-navigation
axios
react-native-paper
BUILD KIT DIFFICULTY
Intermediate

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.