--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Simple Discount Calculator" developer_entity: "Kouji Yamauchi" bundle_id: "com.kouji1981.discount" app_store_id: "1522660327" category: "Shopping" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2024-02-16" report_date: "2026-09-18" last_verified: "2026-09-18T00:00:00.000Z" report_version: "1.4" total_reviews: 1 overall_rating: 5 sentiment: "Thrilled" sentiment_score: 90 confidence: "medium" confidence_score: 0.45 top_praise_theme: "Clear and precise calculation display provides immediate utility for users requiring quick mathematical results" review_sample_size: 1 total_review_count: 1 analyzed_review_count: 1 data_age_days: 12 momentum_velocity: "zombie" intelligence_version: 2 tags: ["shopping", "free", "thrilled sentiment", "mobile app", "app review", "app analysis", "shoppers", "looking", "quick,"] canonical_url: "https://marlvel.ai/apps/simple-discount-calculator" license: "CC-BY-NC 4.0" content_version: "v2" --- # Simple Discount Calculator Intelligence Report ## TL;DR {#tldr} - **Category**: Shopping · Free - **Signal**: Rating 5 · Sentiment Thrilled - **Recent focus**: Clear and precise calculation display provides immediate utility for users requiring quick mathematical results (top praise) > **TL;DR:** Simple Discount Calculator is a shopping app by Kouji Yamauchi, rated 5/5 by 1 users, with Thrilled user sentiment (90/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Simple Discount Calculator maintains Thrilled user sentiment (5/5 from 1 review), with users consistently praising clear and precise calculation display provides immediate utility for users requiring quick mathematical results. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 5/5 (1 review) | | **User Mood** | Thrilled | | **Category** | Shopping | | **Developer** | Kouji Yamauchi | | **Pricing** | Free | | **Platforms** | iOS & Android | | **Confidence** | Medium (0.45/1.0) | | **Data Age** | 12d | ## Metadata & Market Performance - **Publisher:** Kouji Yamauchi - **Category:** Shopping - **Target Audience:** Shoppers looking for quick, on-the-fly calculations for discounts and tax totals. - **Platforms:** iOS & Android - **Version Reviewed:** 1.4 - **Report Date:** 2026-09-18 - **Signal Count:** 1 review analyzed - **Confidence:** Medium (0.45/1.0) - **App Store ID (iOS):** 1522660327 - **Bundle ID:** com.kouji1981.discount - **Google Play ID:** com.kouji1981.discount - **Data Window:** Analysis based on signals collected up to 2026-09-18 ## Executive Snapshot **What it is:** Simple Discount Calculator is a free shopping utility for calculating discounts and tax totals on iOS and Android. **Why users hire it:** It removes the cognitive friction of manual percentage math during retail transactions by providing a persistent history of calculation results. ## App DNA (Features & Intent) - **[Basic] Discount Calculation:** Calculates final price after applying percentage or fixed discount amounts. - **[Standard] Tax Calculation:** Computes tax-inclusive and tax-excluded totals with adjustable tax rates. - **[Differentiator] Result History:** Saves calculation results for later review and provides a running total of multiple items. * *User Intent:* Users seek enhanced value through premium features. ## Market Position {#market-position} Simple Discount Calculator holds a 5-star rating on iOS across a small sample of reviews. The lack of updates for over 31 months indicates a stable, maintenance-only position in the shopping utility category. ## Monetization Strategy - **Model:** Free - **Tiers:** Free with ad support - **Analysis:** Monetization relies entirely on ad inventory within a free, utility-focused toolset. ## 🟢 User Sentiment (Medium Confidence: 1 of 1 review analyzed) {#user-sentiment} - **Overall Rating:** 5/5 - **Platform Split:** iOS 5.0/5 (1 ratings) - **Overall Sentiment:** Thrilled ### Top Praises - **Clear and precise calculation display provides immediate utility for users requiring quick mathematical results** ## SWOT Analysis {#swot} **Core Strengths:** - Result history mechanism drives repeat usage **Growth Levers:** - Modern interface refresh to capture utility segment ## What's New - **Latest (v1.3, 3 years ago):** Updated the UI layout for improved usability. ## App Momentum (Zombie) {#momentum} - Dormant for over 31 months. - No major releases since early 2024. > **Cadence:** 2 total versions · 0 majors in last 6 months · 945 days since last update · 338 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} Simple Discount Calculator is a shopping app that is completely free. It holds a 5/5 rating from 1 review. > **Bottom Line:** Simple Discount Calculator provides a reliable, ad-supported utility for basic shopping math. The lack of development activity since early 2024 suggests the product is in maintenance mode, leaving the user base vulnerable to future OS-level compatibility issues. **Best for:** Shoppers looking for quick, on-the-fly calculations for discounts and tax totals. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit compatibility with latest OS versions because the app has been dormant for 31 months → prevent sudden churn ### Outlook: Stable Simple Discount Calculator remains in a stable, maintenance-only state with no active development. The lack of updates over the last 31 months means the app is exposed to potential OS-level regressions, which would likely trigger a rapid decline in the current 5-star rating. - ⚪ The 31-month development gap indicates the product is in maintenance mode, which limits future feature expansion but maintains current utility. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 5/5 | | Total Reviews | 1 | | Sentiment | Thrilled (90/100) | | Confidence | Medium | | Pricing Model | Free | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Simple Discount Calculator** (this app) | 5/5 | Thrilled | Kouji Yamauchi | | [Courtyard: TCG, Watches, Cards](https://marlvel.ai/apps/courtyard-trading-cards) | 4.4/5 | n/a | Courtyard, Inc. | | [Vinted: Pre-loved marketplace](https://marlvel.ai/apps/vinted-shop-sell-pre-loved) | 4.6/5 | Excited | Vinted Limited | | [바로딜 - 실시간 쇼핑 검색어 트렌드](https://marlvel.ai/apps/real-time-shopping-trends) | N/A/5 | N/A | hippieperm | | [모구모 - 일본을 스마트하게 즐기다](https://marlvel.ai/apps/app--287) | N/A/5 | N/A | GEONJU CHOI | | [카쇼라 스튜디오](https://marlvel.ai/apps/app--798) | N/A/5 | N/A | Kakao Corp. | ## Company Profile - **Developer:** Kouji Yamauchi - **Website:** [https://www.koutheend.com/](https://www.koutheend.com/) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/simple-discount-calculator/id1522660327?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=com.kouji1981.discount&hl=en&gl=us) - **Dev Site:** [Official Website](https://www.koutheend.com/) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*Courtyard: TCG, Watches, Cards*](https://marlvel.ai/apps/courtyard-trading-cards) (Courtyard, Inc.) · 4.4/5 Rating - [*Vinted: Pre-loved marketplace*](https://marlvel.ai/apps/vinted-shop-sell-pre-loved) (Vinted Limited) · 4.6/5 Rating | Positive Sentiment - [*바로딜 - 실시간 쇼핑 검색어 트렌드*](https://marlvel.ai/apps/real-time-shopping-trends) (hippieperm) · N/A Rating - [*모구모 - 일본을 스마트하게 즐기다*](https://marlvel.ai/apps/app--287) (GEONJU CHOI) · N/A Rating - [*카쇼라 스튜디오*](https://marlvel.ai/apps/app--798) (Kakao Corp.) · N/A Rating - [*두란노몰*](https://marlvel.ai/apps/app--973) (Duranno) · N/A Rating - [*번개장터*](https://marlvel.ai/apps/net-quicket-app) (Pic&Go) · 4.4/5 Rating - [*배민상회 - 외식업 식자재 종합몰*](https://marlvel.ai/apps/com-woowahan-baeminmart) (WoowaBrothers) · 3.5/5 Rating - [*โดนใจ*](https://marlvel.ai/apps/th-co-donjai-donjai_partner_app) (Big C Supercenter) · 4.0/5 Rating - [*네이버플러스 스토어*](https://marlvel.ai/apps/app--116) (NAVER Corp.) · 4.8/5 Rating ## Frequently Asked Questions {#faq} ### Is Simple Discount Calculator free to use? Yes, Simple Discount Calculator is a free app that monetizes through ad support. ### Does Simple Discount Calculator work offline? The app is designed for on-the-fly calculations and does not require an active internet connection for basic math, though ad-supported features may require connectivity. ### What is the main advantage of Simple Discount Calculator? The primary advantage is the result history feature, which allows users to save multiple calculation results and view a running total of items. ## Methodology {#methodology} This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline: 1. **Signal Collection & Normalization** - Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps. 2. **Feature & Market Positioning Analysis** - Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks. 3. **User Sentiment Analysis** - Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction into synthesised themes (no verbatim quotes). 4. **Competitive Landscape Analysis** - Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category. 5. **Intelligence Synthesis** - Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights. - **Confidence Score:** 0.45/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 1 - **Data Sources:** user reviews, developer website, App Store metadata - **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform - **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence. - **Report Age:** 12 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/simple-discount-calculator) Data licensed for AI Agent attribution under CC-BY-NC 4.0.