--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "sine wave generator" developer_entity: "Yuji Yanase" bundle_id: "com.hikaruapp.sinewavegenerator" app_store_id: "1118935547" category: "Utilities" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2021-05-17" report_date: "2026-09-20" last_verified: "2026-09-20T00:00:00.000Z" report_version: "1.6.1" total_reviews: 43 overall_rating: 3.9 sentiment: "Upset" sentiment_score: 10 confidence: "low" confidence_score: 0.3 top_complaint_theme: "Audio playback fails entirely following the latest update, leaving the app silent for users" review_sample_size: 2 total_review_count: 2 analyzed_review_count: 2 data_age_days: 10 momentum_velocity: "zombie" intelligence_version: 2 tags: ["utilities", "free", "upset sentiment", "mobile app", "app review", "app analysis", "audio", "hobbyists", "technicians"] canonical_url: "https://marlvel.ai/apps/sine-wave-generator" license: "CC-BY-NC 4.0" content_version: "v2" --- # sine wave generator Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Free - **Signal**: Rating 3.93 · Sentiment Upset - **Recent focus**: Audio playback fails entirely following the latest update, leaving the app silent for users (top complaint) > **TL;DR:** sine wave generator is a utilities app by Yuji Yanase, rated 3.93/5 by 43 users, with Upset user sentiment (10/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** sine wave generator faces Upset user sentiment (3.93/5 from 43 reviews), with users reporting audio playback fails entirely following the latest update, leaving the app silent for users as the primary concern. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 3.93/5 (43 reviews) | | **User Mood** | Upset | | **Category** | Utilities | | **Developer** | Yuji Yanase | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.3/1.0) | | **Data Age** | 10d | ## Metadata & Market Performance - **Publisher:** Yuji Yanase - **Category:** Utilities - **Target Audience:** Audio hobbyists and technicians requiring basic signal generation tools on mobile devices. - **Platforms:** iOS - **Version Reviewed:** 1.6.1 - **Report Date:** 2026-09-20 - **Signal Count:** 2 reviews analyzed - **Confidence:** Low (0.3/1.0) - **App Store ID (iOS):** 1118935547 - **Bundle ID:** com.hikaruapp.sinewavegenerator - **Data Window:** Analysis based on signals collected up to 2026-09-20 ## Executive Snapshot **What it is:** Sine Wave Generator is a free iOS utility that generates sine waves and DTMF tones using multi-touch screen inputs. **Why users hire it:** The app serves users needing a portable signal generator, but the current failure to output sound removes the utility it provides. ## App DNA (Features & Intent) - **[Differentiator] Touch-based Sine Wave Generation:** Generates sine waves by mapping screen touch coordinates to frequency and volume parameters with five-point multi-touch support. - **[Standard] DTMF Tone Generation:** Produces Dual-Tone Multi-Frequency signals for telephone system signaling. * *User Intent:* Users seek enhanced value through premium features. - **[Standard] Multi-Tone Mode:** Generates simultaneous tone signals with default C, E, and G frequency settings. ## Market Position {#market-position} Sine Wave Generator operates as a free, unmaintained utility in the Audio/Utilities category. The lack of updates since 2021 leaves the app vulnerable to platform-level API changes, which currently manifest as total audio failure. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** The app is distributed as a free utility with no observable in-app purchases or subscription tiers. ## 🔴 User Sentiment (Low Confidence: 2 of 2 reviews analyzed) {#user-sentiment} - **Overall Rating:** 3.93/5 - **Platform Split:** iOS 3.9/5 (43 ratings) - **Overall Sentiment:** Upset ### Top Complaints (Impact Areas) - **Audio playback fails entirely following the latest update, leaving the app silent for users** ## SWOT Analysis {#swot} **Core Strengths:** - Five-point multi-touch frequency mapping **Growth Levers:** - Market demand for reliable signal generation ## What's New - **Latest (v1.6.1, 5 years ago):** Addressed general software bugs. ## App Momentum (Zombie) {#momentum} - No updates for over 64 months. - Critical audio playback failure reported. > **Cadence:** 1 total versions · 0 majors in last 6 months · 1952 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} sine wave generator is an utilities app that is completely free. It holds a 3.93/5 rating from 43 reviews. > **Bottom Line:** Sine Wave Generator is currently non-functional, and the lack of updates since 2021 indicates a sunset posture. The PM should remove this asset from the portfolio to prevent further brand erosion from broken utility tools. **Best for:** Audio hobbyists and technicians requiring basic signal generation tools on mobile devices. ### PM Action Plan (Next Best Moves) - [ ] [SUNSET] Sunset Sine Wave Generator because the app is non-functional and unmaintained → stop brand erosion ### Outlook: Declining The market for simple audio utilities is consolidating around reliable, frequently updated tools. Sine Wave Generator's failure to maintain basic functionality makes it obsolete, and the PM should prioritize its removal to protect brand reputation. - 🔴 The lack of development activity for over five years, combined with current audio playback failures, suggests the product is effectively abandoned. - 🔴 Persistent interface loading errors prevent users from accessing core functionality, which compounds the negative sentiment and churn. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 3.93/5 | | Total Reviews | 43 | | Sentiment | Upset (10/100) | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **sine wave generator** (this app) | 3.93/5 | Upset | Yuji Yanase | | [Sota Connect: Secure Network](https://marlvel.ai/apps/fi-catconnect-sota) | 4.8/5 | N/A | Cat Connect | | [V2Box - V2ray Client](https://marlvel.ai/apps/v2box-v2ray-client) | 4.6/5 | n/a | techlaim | | [avoVPN Desktop](https://marlvel.ai/apps/avovpn-desktop) | N/A/5 | N/A | Avocado VPN Technologies | | [Fusvob VPN : Super VPN 2026](https://marlvel.ai/apps/com-toplinkc-foxexcellent) | 4.5/5 | Mixed | Fuxin Technology | | [Gear Ratio Calculator & RPM](https://marlvel.ai/apps/cog-gear-ratio-calculator) | N/A/5 | N/A | Linh Phan Nhat Khanh | ## Company Profile - **Developer:** Yuji Yanase ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/sine-wave-generator/id1118935547?uo=4) - **Sources:** App store metadata, User reviews. ## Related Intel Reports - [*Sota Connect: Secure Network*](https://marlvel.ai/apps/fi-catconnect-sota) (Cat Connect) · 4.8/5 Rating - [*V2Box - V2ray Client*](https://marlvel.ai/apps/v2box-v2ray-client) (techlaim) · 4.6/5 Rating - [*avoVPN Desktop*](https://marlvel.ai/apps/avovpn-desktop) (Avocado VPN Technologies) · N/A Rating - [*Fusvob VPN : Super VPN 2026*](https://marlvel.ai/apps/com-toplinkc-foxexcellent) (Fuxin Technology) · 4.5/5 Rating - [*Gear Ratio Calculator & RPM*](https://marlvel.ai/apps/cog-gear-ratio-calculator) (Linh Phan Nhat Khanh) · N/A Rating - [*NordVPN: VPN Fast & Secure*](https://marlvel.ai/apps/com-nordvpn-nordvpn) (Nordvpn S.A.) · 4.7/5 Rating - [*Pulley Calculator Easy*](https://marlvel.ai/apps/pulley-calculator-easy) (YAVUZ BULAMADIK) · N/A Rating - [*Track And Field Companion*](https://marlvel.ai/apps/track-and-field-companion) (Travis Menghini) · N/A Rating - [*VPN 365-Master WIFI Security*](https://marlvel.ai/apps/vpn-365-master-wifi-security) (vpn fast) · 4.6/5 Rating - [*VPN - Seal VPN Secure Proxy*](https://marlvel.ai/apps/vpn-seal-vpn-secure-proxy) (Starpass VPN Free) · 4.6/5 Rating | Positive Sentiment ## Frequently Asked Questions {#faq} ### Is Sine Wave Generator still supported by the developer? No, the app has not received an update since May 2021, and users report that core audio functionality is currently broken. ### Does Sine Wave Generator work on the latest iOS versions? Users report that audio playback fails entirely and interface elements hang on infinite loading screens, suggesting the app is not compatible with current iOS versions. ### Are there free alternatives to Sine Wave Generator? Yes, many active audio utility apps are available on the App Store that offer similar signal generation features with current maintenance and support. ## 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:** 0.3/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 2 - **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:** 10 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/sine-wave-generator) Data licensed for AI Agent attribution under CC-BY-NC 4.0.