App Overview

Tokyo JisouMaps (Old Version) icon

Tokyo JisouMaps (Old Version)

Japan Map Center, Inc. · Navigation

for iPad, we recommend another app "Tokyo Jisou Maps for iPad".

$15.99 · In-app purchases

PRICE
$15.99
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.

Build your own version

Build Kit

Make this idea yours

A product spec, screen plans, and build steps for your coding agent.

First kit free with a verified email

Add to a Remix

Combine features and design from your favorite apps.

Kit ready. Verify your email to download it.

What's included16 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
Preview a sample Build Kit No email needed

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.

JavaScript is required to complete mailbox verification.

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 Tokyo JisouMaps (Old Version): map the core Navigation workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

Preview ready. Verify your email to reveal and copy the full prompt.

JavaScript is required to complete mailbox verification. Return to this prompt preview.

Continue in Rork copies the full prompt to your clipboard first, then opens Rork in a new tab.

Continue in Rork >

Affiliate link: CloneChart may earn a commission at no extra cost

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

Implement real-time map updates and user-reported changes

Assumption to check: Maps can be outdated and may not reflect current terrain or new roads

Validate with people who use this workflow before building.

Hypothesis 2

Create a more intuitive UI for managing saved places

Assumption to check: Users find it difficult to save and organize favorites

Validate with people who use this workflow before building.

Hypothesis 3

Enhance offline maps functionality to allow better navigation without internet

Assumption to check: Limited offline capabilities

Validate with people who use this workflow before building.

Hypothesis 4

Integrate improved TTS and real-time updates for navigation instructions

Assumption to check: Voice navigation can be inaccurate or delayed

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

for iPad, we recommend another app "Tokyo Jisou Maps for iPad". "Jisou" means "layers of time." The maps and aerial photographs in this app show Tokyo at different moments in the past. "Tokyo Jisou Maps" is a map viewer application that provides the transition of Tokyo from the Meiji era to the present day. Tokyo is the capital of Japan where population, politics, economy and culture are heavily concentrated. Tokyo has been developing as one of the megacities in the world. Particularly, growth is remarkable after the high economic growth. One can hardly imagine how Tokyo looked like 140 years ago. However, this application enables us to see the features of Tokyo at different times. Moreover, since these old maps are linked to GPS information, comparison between the old Tokyo and the present Tokyo can be easily done. 19 kinds of maps can be displayed for 7 periods, i.e., the civilization and enlightenment period, the end of Meiji-era, the time just before the Great Kanto Earthquake of 1923, the prewar period in the Showa era, the period just before the high‐growth, the bubble economy period and the present days, each of which has aerial photos and geographic features. In addition, special map symbols that reflect special social conditions of a certain time period can be displayed. Let's review the features of Tokyo that has been rapidly changing. Take a walk with this application, you will enjoy time-traveling at any time.

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

Screenshots

< Scroll to see more >

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
react-navigation
axios
react-native-maps
@react-native-async-storage/async-storage
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.