--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Cello Tuner - Simple Tuner" developer_entity: "Jonathan de Gaston" bundle_id: "com.simpletoolsandtuners.cello.tuner" app_store_id: "6461601163" category: "Music" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-09-18" report_date: "2026-09-25" last_verified: "2026-09-25T00:00:00.000Z" report_version: "4.5.17 (149)" total_reviews: 546 overall_rating: 4.1 sentiment: "Frustrated" sentiment_score: 25 confidence: "medium" confidence_score: 0.45 top_praise_theme: "The simple interface allows musicians to perform quick instrument tuning before starting their practice sessions" top_complaint_theme: "Persistent technical failures prevent the app from detecting correct musical strings during the tuning process" review_sample_size: 4 total_review_count: 4 analyzed_review_count: 4 data_age_days: 5 momentum_velocity: "maintenance" intelligence_version: 2 tags: ["music", "free", "frustrated sentiment", "mobile app", "app review", "app analysis", "cellists", "string", "instrument"] canonical_url: "https://marlvel.ai/apps/cello-tuner-simple-tuner" license: "CC-BY-NC 4.0" content_version: "v2" --- # Cello Tuner - Simple Tuner Intelligence Report ## TL;DR {#tldr} - **Category**: Music · Free - **Signal**: Rating 4.09 · Sentiment Frustrated - **Recent focus**: Persistent technical failures prevent the app from detecting correct musical strings during the tuning process (top complaint) · The simple interface allows musicians to perform quick instrument tuning before starting their practice sessions (top praise) > **TL;DR:** Cello Tuner - Simple Tuner is a music app by Jonathan de Gaston, rated 4.09/5 by 546 users, with Frustrated user sentiment (25/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Cello Tuner - Simple Tuner faces Frustrated user sentiment (4.09/5 from 546 reviews), with users reporting persistent technical failures prevent the app from detecting correct musical strings during the tuning process as the primary concern. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.09/5 (546 reviews) | | **User Mood** | Frustrated | | **Category** | Music | | **Developer** | Jonathan de Gaston | | **Pricing** | Free | | **Platforms** | iOS & Android | | **Confidence** | Medium (0.45/1.0) | | **Data Age** | 5d | ## Metadata & Market Performance - **Publisher:** Jonathan de Gaston - **Category:** Music - **Target Audience:** Cellists and string instrument players ranging from beginners to professionals who require a reliable, portable tuning tool. - **Platforms:** iOS & Android - **Version Reviewed:** 4.5.17 (149) - **Report Date:** 2026-09-25 - **Signal Count:** 4 reviews analyzed - **Confidence:** Medium (0.45/1.0) - **App Store ID (iOS):** 6461601163 - **Bundle ID:** com.simpletoolsandtuners.cello.tuner - **Google Play ID:** com.simpletoolsandtuners.cello.tuner - **Data Window:** Analysis based on signals collected up to 2026-09-25 ## Executive Snapshot **What it is:** Cello Tuner - Simple Tuner is a free, ad-free pitch detection utility for string instruments like the cello and double bass on iOS and Android. **Why users hire it:** It removes the time and technical friction of manual tuning for musicians who need a reliable, portable tool before practice sessions. ## App DNA (Features & Intent) - **[Standard] Chromatic Tuning Engine:** Detects pitch across the full C0 to B8 range for various string instruments. - **[Differentiator] Automatic String Detection:** Identifies played notes without manual input, reducing workflow friction. - **[Standard] Noise Cancellation:** Adjusts microphone sensitivity to isolate instrument pitch in noisy environments. ## Market Position {#market-position} Cello Tuner - Simple Tuner maintains a niche position in the Music category as a free, ad-free utility. The current 4.18 rating across 546 total platform reviews is threatened by recent technical instability that limits its utility for string players. ## Monetization Strategy - **Model:** Free - **Tiers:** Fully free, ad-free version - **Analysis:** The app operates on a completely free, ad-free model with no current monetization gates or subscription tiers. ## 🔴 User Sentiment (Medium Confidence: 4 of 4 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.09/5 - **Platform Split:** iOS 4.2/5 (438 ratings) | Android 3.8/5 (108 ratings) - **Overall Sentiment:** Frustrated - **Note:** The 4.09/5 store rating reflects cumulative history, while the Frustrated sentiment reflects recent user reviews analyzed by our AI pipeline. ### Top Praises - **The simple interface allows musicians to perform quick instrument tuning before starting their practice sessions** ### Top Complaints (Impact Areas) - **Persistent technical failures prevent the app from detecting correct musical strings during the tuning process** ## SWOT Analysis {#swot} **Core Strengths:** - Ad-free model removes friction for users seeking a distraction-free practice environment. - Automatic string detection reduces the cognitive load of manual screen interaction during tuning. **Growth Levers:** - Refining the signal processing engine could stabilize the core utility and improve user retention. ## What's New - **Latest (v4.5.17, 1 weeks ago):** Improved tuning accuracy, faster response times, and UI refinements. ## App Momentum (Maintenance) {#momentum} - Ships maintenance-only updates. - Last major release Sep 2023. > **Cadence:** 3 total versions · 0 majors in last 6 months · 7 days since last update · 56 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} Cello Tuner - Simple Tuner is a music app that is completely free. It holds a 4.09/5 rating from 546 reviews. > **Bottom Line:** Cello Tuner - Simple Tuner must prioritize signal processing stability to address the fundamental detection failures currently driving negative sentiment. Stabilizing the core utility would unlock the value of its ad-free, simple interface for the target audience of string musicians. **Best for:** Cellists and string instrument players ranging from beginners to professionals who require a reliable, portable tuning tool. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Rebuild signal processing logic because string detection failures are the top-cited complaint → improve core utility retention ### Outlook: Declining The music utility market is consolidating around tools that offer high-precision, low-latency performance. Cello Tuner - Simple Tuner remains in a maintenance-only posture, and without addressing the fundamental signal processing failures, it will continue to lose ground to more responsive, actively updated alternatives. - 🔴 Persistent technical failures in string detection erode the core utility, which compounds the negative sentiment already visible in recent user feedback. - 🔴 The maintenance-only release cadence suggests a lack of active feature investment, leaving the app exposed to better-supported competitors in the music utility space. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.09/5 | | Total Reviews | 546 | | Sentiment | Frustrated (25/100) | | Confidence | Medium | | Pricing Model | Free | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Cello Tuner - Simple Tuner** (this app) | 4.09/5 | Frustrated | Jonathan de Gaston | | [SyncTimer - Ensemble Stopwatch](https://marlvel.ai/apps/synctimer-ensemble-stopwatch) | 5.0/5 | Thrilled | Sebastian Suarez-Solis | | [ヨルシカ](https://marlvel.ai/apps/com-yorushika-sp) | 4.8/5 | N/A | Fanplus, Inc. | | [あいみょん](https://marlvel.ai/apps/net-aimyong-sp) | 4.5/5 | N/A | Fanplus, Inc. | | [イントリズム](https://marlvel.ai/apps/jp-rc-into-rhythm) | 3.5/5 | N/A | RedinC | | [クリープハイプ](https://marlvel.ai/apps/creephyp-sp-browsingapp) | N/A/5 | N/A | Fanplus, Inc. | ## Company Profile - **Developer:** Jonathan de Gaston - **Website:** [https://jonny5-5.github.io/html/pages/home.html](https://jonny5-5.github.io/html/pages/home.html) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/cello-tuner-simple-tuner/id6461601163?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=com.simpletoolsandtuners.cello.tuner&hl=en&gl=us) - **Dev Site:** [Official Website](https://jonny5-5.github.io/html/pages/home.html) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*SyncTimer - Ensemble Stopwatch*](https://marlvel.ai/apps/synctimer-ensemble-stopwatch) (Sebastian Suarez-Solis) · 5.0/5 Rating | Excellent Sentiment - [*ヨルシカ*](https://marlvel.ai/apps/com-yorushika-sp) (Fanplus, Inc.) · 4.8/5 Rating - [*あいみょん*](https://marlvel.ai/apps/net-aimyong-sp) (Fanplus, Inc.) · 4.5/5 Rating - [*イントリズム*](https://marlvel.ai/apps/jp-rc-into-rhythm) (RedinC) · 3.5/5 Rating - [*クリープハイプ*](https://marlvel.ai/apps/creephyp-sp-browsingapp) (Fanplus, Inc.) · N/A Rating - [*マカロニえんぴつ*](https://marlvel.ai/apps/com-macaroniempitsu-fc) (Fanplus, Inc.) · 3.1/5 Rating - [*100.1 Jack FM*](https://marlvel.ai/apps/100-1-jack-fm) (NRG Media) · 1.0/5 Rating - [*100.1 WJRZ*](https://marlvel.ai/apps/100-1-wjrz) (Beasley Broadcast Group) · 4.8/5 Rating | Excellent Sentiment - [*100.3 The Wolf*](https://marlvel.ai/apps/100-3-the-wolf) (SummitMedia, LLC) · 4.1/5 Rating - [*100.7 KIK-FM*](https://marlvel.ai/apps/100-7-kik-fm) (Hubbard Radio) · 4.3/5 Rating ## Frequently Asked Questions {#faq} ### Is Cello Tuner - Simple Tuner suitable for professional musicians? While marketed for professionals, recent user reviews report persistent technical failures in string detection, which may limit its reliability for professional settings. ### Does Cello Tuner - Simple Tuner contain ads? No, the app is currently provided as a fully free, ad-free version with no monetization gates. ### What are some free alternatives to Cello Tuner - Simple Tuner? There are many chromatic tuners available on the App Store and Play Store; users should look for apps with recent update activity to ensure better performance. ## 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:** 4 - **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:** 5 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/cello-tuner-simple-tuner) Data licensed for AI Agent attribution under CC-BY-NC 4.0.