App Overview

SMSReader - PDF Reader icon

SMSReader - PDF Reader

Kotatsu RIN · Productivity

SMSReader is a PDF reader built around one thing above all: turning pages fast

$9.99

PRICE
$9.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet

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 included

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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

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App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

Screenshots

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App Store description

SMSReader is a PDF reader built around one thing above all: turning pages fast. Even in a book of thousands of pages, the next page appears the moment you tap the edge. COMPATIBLE WITH THE LATEST ENVIRONMENTS ・The most comfortable PDF viewer on iPhone Duo ・Comprehensive accessibility support (VoiceOver, etc.) FAST PAGE TURNING • Tap the left or right edge to turn the page instantly, with no animation • Hold an edge to keep flipping, at one of four speeds • Flick, drag the slider, or type a page number to jump straight there • Pinch in for an overview of all pages, with adjustable thumbnail size HOME VIEW Save the area you want to read, per book, and keep that zoom as you turn pages. Scanned books with wide margins and two-column documents become easy to read. Tap a corner to move through a page one view at a time. VERTICAL, HORIZONTAL AND TWO-PAGE SPREADS • Read right to left (Japanese vertical text), left to right, or top to bottom • Two-page spreads, with the cover shown alone, set automatically from the PDF • Choose the background color around the pages LIBRARY • Organize books in a library and on shelves by tag • Use any page or an image as a book’s cover • See the bookmarks of all your books in one list • Add shelf tags by content with Apple Intelligence on your device, including classes of the Nippon Decimal Classification SEARCH AND TEXT SELECTION • Search the text of a book or of your whole library • Select text to copy, share or look up, including vertical Japanese text and text with ruby TRANSLATION PANEL See a translation of each paragraph beside the page. Tap a paragraph to link the original and the translation. Paragraphs split across pages are joined, running heads and page numbers are hidden automatically, and you can copy the translation of a whole chapter. For translation and summaries, choose: • Apple Translate (on device) • Apple Intelligence (on device, supported devices only) • An online translation or AI service, with your own API key PRIVACY • No account needed. No analytics, no ads • Your books and settings stay on your device • Text is sent to an external AI service only when you have entered your own API key, confirmed where it goes and agreed, and then run a translation or summary • Text selection and AI features are off for PDFs that forbid copying IMPORT AND EXPORT Import PDFs from the Files app, from other apps with Share, or by drag and drop. Password-protected PDFs are supported. Share a PDF or an image of a page, or print. For iPad and iPhone. The app can be shown in Japanese or English.

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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.

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
BUILD KIT DIFFICULTY

Not assessed in a Build Kit yet.

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.