App Overview

LaLa Clock icon

LaLa Clock

Sung Hee Bae · Lifestyle

LaLa clock is a digital clock with a retro sensibility, and ‘라라(LaLa)’ means “live a pleasant life” in pure Korean

$1.99 · In-app purchases

PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.0
8 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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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 LaLa Clock: map the core Lifestyle 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 more ringtone choices and alarm behaviors.

Assumption to check: Limited customization options for alarms

Validate with people who use this workflow before building.

Hypothesis 2

Add detailed sleep analysis and trends.

Assumption to check: No sleep tracking insights

Validate with people who use this workflow before building.

Hypothesis 3

Enhance visual design and interaction feedback.

Assumption to check: User interface is not very engaging

Validate with people who use this workflow before building.

Hypothesis 4

Simplify purchasing process for premium features.

Assumption to check: In-app purchase complexity

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

LaLa clock is a digital clock with a retro sensibility, and ‘라라(LaLa)’ means “live a pleasant life” in pure Korean. The font that looks like the screen in the game and the retro-sensible image you see everywhere are the charms of 'LaLa clock', which is different from other digital clocks. # Try using LaLa Clock like this. On the desk : Find your inner strength with positive affirmations. In the office: Change the picture in front of your desk according to your mood As decoration: Use it as an interior accessory in a cafe or on your desk (calendar, photo, inspirational phrase, etc.) # The LaLa clock provides "my custom function" that makes the day more meaningful. you can easily switch between the desired modes at any time you want. Basic Mode: ‘Clock + Calendar’ To-Do Mode: ‘Clock + To-Do list’ Healing Mode1: ‘Clock + Healing Words’ Healing Mode2 ‘Clock + Healing Photo’ # Provides photo slideshow view(Screen burn-in prevention) View a slideshow of up to 30 photos stored on your phone slide show options (Off, 10 sec, 30 sec, 1 min, 5 min, 10 min ) # Nine background themes provided # Alarm # Home Widget

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
expo-notifications
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.