App Overview

DayCost 2 - Personal Finance icon

DayCost 2 - Personal Finance

良峰 侯 · Finance

DayCost makes it easy to keep track of your assets, and with budget management it can help you monitor your spending and cut your expenses!

$2.99 · In-app purchases

PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.1
14 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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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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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 DayCost 2 - Personal Finance: map the core Finance 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

Add advanced reporting features and visualizations.

Assumption to check: Limited analytics and reports for deeper financial insights.

Validate with people who use this workflow before building.

Hypothesis 2

Implement bill reminders and alerts.

Assumption to check: No reminders for upcoming bills or expenses.

Validate with people who use this workflow before building.

Hypothesis 3

Enhance UI with vibrant colors and animations.

Assumption to check: User interface could be more modern and engaging.

Validate with people who use this workflow before building.

Hypothesis 4

Integrate with more banks via APIs for better account linking.

Assumption to check: Limited integration with banks and financial institutions.

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

DayCost makes it easy to keep track of your assets, and with budget management it can help you monitor your spending and cut your expenses! You only need to pay once to use DayCost on your iPhone and iPad, and with automatic syncing via iCloud, it can help anyone. Biometric password protection so no one can see it but you. Simple Bookkeeping - 3-second notes for quick bookkeeping - Take the photos: Record your life while you bookkeeping - Repeat transactions: automatically generate transactions, you don't need to add the same ones over and over again - Transaction templates: further improve the speed of bookkeeping - Support sub-categories Budget Management - Income and expense budgeting - Dashboard: see the consumption at a glance - Cycles: daily, weekly, biweekly, monthly, yearly, and more complex cycles can be customized - Dimensions: categories, accounts, groups, traders Account Management - View net worth at any time and keep track of your finances - Trend analysis of bank cards, cash, credit cards, etc., up or down at a glance Graphical Reports - Bar chart, pie chart, trend chart analysis, easy to read financial reports - View financial status from all dimensions and find problems in time iCloud Sync - Sync data between multiple devices in real time - Protect your data so you never lose it. Multiple Ledgers (PLUS subscription) - Create ledgers for business, family, etc. for greater convenience and clarity - Independent data between each ledger - Faster queries Share Ledgers (PLUS Subscription) - Share designated ledgers with family or friends to keep track of datas together - Permission control: other participants' data can only be viewed, not edited Batch Operations (PLUS Subscription) - Delete Transactions - Batch replace the account, category, group, trader for transactions data. Importing Data - Easily import data from other apps Search - Simple search: search for transactions by category, account, group, trader, notes - Advanced search: more precise and faster Customization - Customize your budget cycle - Customize categories, accounts, groups, traders - Customize icons with photos - More customization options to discover Follow-up Plans - Mac Support PLUS Subscription - 1 Month of PLUS: $2.99 - 6 Months of PLUS: $7.99 - 12 Months of PLUS: $9.99 In all the countries (except the USA) actual charges will be converted to the local currency. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Terms & Privacy - https://www.daycost.net/privacy.html - https://www.daycost.net/terms.html Download it now and let it help you cut your expenses!

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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
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.