--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Riichi Mahjong Hand Calculator" developer_entity: "Heart of the Cards" bundle_id: "com.animecubed.mahjongcalc" app_store_id: "1160349726" category: "Games" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2022-01-19" report_date: "2026-08-07" last_verified: "2026-08-07T00:00:00.000Z" report_version: "1.03" total_reviews: 8 overall_rating: 3.9 sentiment: "Excited" sentiment_score: 65 confidence: "low" confidence_score: 0.25 top_praise_theme: "Beginners find the calculator helpful for understanding the value of complex hands during play" top_complaint_theme: "The application quits unexpectedly when users attempt to calculate rare hand combinations like thirteen orphans" review_sample_size: 4 total_review_count: 4 analyzed_review_count: 4 data_age_days: 9 momentum_velocity: "zombie" intelligence_version: 3 tags: ["games", "free", "excited sentiment", "mobile app", "app review", "app analysis", "riichi", "mahjong", "players"] canonical_url: "https://marlvel.ai/apps/riichi-mahjong-hand-calculator" license: "CC-BY-NC 4.0" content_version: "v2" --- # Riichi Mahjong Hand Calculator Intelligence Report ## TL;DR {#tldr} - **Category**: Games · Free - **Signal**: Rating 3.88 · Sentiment Excited - **Recent focus**: The application quits unexpectedly when users attempt to calculate rare hand combinations like thirteen orphans (top complaint) · Beginners find the calculator helpful for understanding the value of complex hands during play (top praise) > **TL;DR:** Riichi Mahjong Hand Calculator is a games app by Heart of the Cards, rated 3.88/5 by 8 users, with Excited user sentiment (65/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Riichi Mahjong Hand Calculator maintains Excited user sentiment (3.88/5 from 8 reviews), with users consistently praising beginners find the calculator helpful for understanding the value of complex hands during play. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 3.88/5 (8 reviews) | | **User Mood** | Excited | | **Category** | Games | | **Developer** | Heart of the Cards | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.25/1.0) | | **Data Age** | 9d | ## Metadata & Market Performance - **Publisher:** Heart of the Cards - **Category:** Games - **Target Audience:** Riichi Mahjong players seeking to verify scoring or analyze discard decisions for self-improvement. - **Platforms:** iOS - **Version Reviewed:** 1.03 - **Report Date:** 2026-08-07 - **Signal Count:** 4 reviews analyzed - **Confidence:** Low (0.25/1.0) - **App Store ID (iOS):** 1160349726 - **Bundle ID:** com.animecubed.mahjongcalc - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-08-07 ## Executive Snapshot **What it is:** Riichi Mahjong Hand Calculator is a free utility for iOS that calculates hand scores and generates shareable discard analysis images. **Why users hire it:** Users hire this app to verify scoring math and seek community feedback on discard choices during play. ## App DNA (Features & Intent) - **[Standard] Riichi Mahjong Scoring Calculator:** Calculates hand scores based on player position, win type, and dora indicators. - **[Differentiator] Nani Kiru Screenshot Tool:** Generates shareable images of incomplete hands for community feedback. * *User Intent:* Users seek social connection and competitive engagement with peers. ## Market Position {#market-position} The app maintains a 3.88 rating across 8 store ratings. The lack of updates since 2022 signals a maintenance-mode posture that limits its competitive reach against active web-based tools. ## Monetization Strategy - **Model:** Free - **Tiers:** Completely free - **Analysis:** The app operates as a free utility with no visible monetization gates. ## 🟢 User Sentiment (Low Confidence: 4 of 4 reviews analyzed) {#user-sentiment} - **Overall Rating:** 3.88/5 - **Platform Split:** iOS 3.9/5 (8 ratings) - **Overall Sentiment:** Excited ### Top Praises - **Beginners find the calculator helpful for understanding the value of complex hands during play** ### Top Complaints (Impact Areas) - **The application quits unexpectedly when users attempt to calculate rare hand combinations like thirteen orphans** ## SWOT Analysis {#swot} **Core Strengths:** - Nani Kiru screenshot tool functions as a community-sharing barrier to entry **Growth Levers:** - Expansion into double riichi calculations could capture power-user segments ## Recent Changes (v2 → v3) {#recent-changes} The app remains in a maintenance-mode state with no new features or bug fixes, though the analytical framing of its competitive position has been refined to emphasize the risks of stagnation. **Overall trend**: Stable **Compared at**: 2026-08-07 ### High-impact changes - **[Shifted] Refined Competitive Narrative** (positioning) ### Medium-impact changes - **[Shifted] SWOT Framing** (swot) ## What's New - **Latest (v1.03, 4 years ago):** Backend API updates and minor bug fixes. ## App Momentum (Zombie) {#momentum} - Silent for 55 months. - Last release in January 2022. > **Cadence:** 1 total versions · 0 majors in last 6 months · 1660 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Riichi Mahjong Hand Calculator is a games app that is completely free. It holds a 3.88/5 rating from 8 reviews. > **Bottom Line:** The app provides a helpful scoring utility for beginners, but the lack of updates since 2022 and recurring crashes on rare hands force users to competitors, so the developer must prioritize stability fixes to retain the existing user base. **Best for:** Riichi Mahjong players seeking to verify scoring or analyze discard decisions for self-improvement. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Rebuild crash-prone calculation logic because rare hand crashes drive users to web alternatives → reduce churn. ### Outlook: Declining The app is in a maintenance-mode state with no active feature development. Without stability patches for rare hand calculations, the user base will continue to migrate to web-based tools that offer more reliable scoring. - 🔴 The lack of updates since 2022 creates a reliability gap that forces users toward web-based alternatives, eroding the app's long-term utility. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 3.88/5 | | Total Reviews | 8 | | Sentiment | Excited (65/100) | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 2 analyzed | | Trend | Stable | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Riichi Mahjong Hand Calculator** (this app) | 3.88/5 | Excited | Heart of the Cards | | [Royal Match](https://marlvel.ai/apps/royal-match) | 4.7/5 | n/a | Dream Games | | [Archero](https://marlvel.ai/apps/archero) | 4.5/5 | N/A | HABBY | | [Bejeweled Blitz](https://marlvel.ai/apps/bejeweled-blitz) | 3.3/5 | n/a | PopCap | | [Bingo Cash - Win Real Money](https://marlvel.ai/apps/bingo-cash) | 4.7/5 | Excited | Papaya Gaming | | [Brawl Stars](https://marlvel.ai/apps/brawl-stars) | 4.5/5 | n/a | Supercell | ## Company Profile - **Developer:** Heart of the Cards ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/riichi-mahjong-hand-calculator/id1160349726?uo=4) - **Sources:** App store metadata, User reviews. ## Related Intel Reports - [*Royal Match*](https://marlvel.ai/apps/royal-match) (Dream Games) · 4.7/5 Rating - [*Archero*](https://marlvel.ai/apps/archero) (HABBY) · 4.5/5 Rating - [*Bejeweled Blitz*](https://marlvel.ai/apps/bejeweled-blitz) (PopCap) · 3.3/5 Rating - [*Bingo Cash - Win Real Money*](https://marlvel.ai/apps/bingo-cash) (Papaya Gaming) · 4.7/5 Rating | Positive Sentiment - [*Brawl Stars*](https://marlvel.ai/apps/brawl-stars) (Supercell) · 4.5/5 Rating - [*Hole.io*](https://marlvel.ai/apps/hole-io) (Voodoo) · 3.9/5 Rating - [*Partymasters - Fun Idle Game*](https://marlvel.ai/apps/partymasters-fun-idle-game) (AI Games FZ) · 4.5/5 Rating | Positive Sentiment - [*Temple Run*](https://marlvel.ai/apps/temple-run) (Imangi Studios, LLC) · 4.3/5 Rating - [*YouRiding - Surf and Bodyboard*](https://marlvel.ai/apps/youriding-surf-and-bodyboard) (BoardScore, Inc.) · 4.2/5 Rating - [*Agar.io*](https://marlvel.ai/apps/agar-io) (Miniclip.com) · 4.3/5 Rating ## 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:** 0.25/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 4 - **Data Sources:** user reviews, 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:** 9 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/riichi-mahjong-hand-calculator) Data licensed for AI Agent attribution under CC-BY-NC 4.0.