--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "IMSLP" developer_entity: "Project Petrucci LLC" bundle_id: "com.petrucci.IMSLP" app_store_id: "1373671782" google_play_id: "com.imslp.app" category: "Music" primary_platform: "ios" primary_monetization: "Subscription" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-05-11" report_date: "2026-05-14" last_verified: "2026-05-14T01:03:16.445Z" report_version: "5.2.0" total_reviews: 1614 overall_rating: 4.4 sentiment: "Excited" sentiment_score: 85 confidence: "high" confidence_score: 0.85 top_praise_theme: "Extensive library depth" top_complaint_theme: "Lack of annotation tools" top_request_theme: "Interactive practice features" review_sample_size: 1614 data_age_days: 36 momentum_velocity: "maintenance" intelligence_version: 3 nemesis: "nkoda: sheet music" competitor_count: 4 tags: ["music", "subscription", "excited sentiment", "mobile app", "app review", "app analysis", "classical", "musicians,", "students,"] canonical_url: "https://marlvel.ai/intel-report/music/imslp" license: "CC-BY-NC 4.0" content_version: "v2" --- # IMSLP App Audit ## TL;DR {#tldr} - **Category**: Music · Subscription - **Signal**: Rating 4.4 · Sentiment Excited - **Recent focus**: Lack of annotation tools (top complaint) · Extensive library depth (top praise) · Interactive practice features (top request) > **TL;DR:** IMSLP is a music app by Project Petrucci LLC, rated 4.4/5 by 1.6K users, with Excited user sentiment (85/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence. > **Key Insight:** IMSLP maintains Excited user sentiment (4.4/5 from 1.6K reviews), with users consistently praising extensive library depth. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.4/5 (1.6K reviews) | | **User Mood** | Excited | | **Category** | Music | | **Developer** | Project Petrucci LLC | | **Pricing** | Subscription | | **Platforms** | iOS & Android | | **Confidence** | High (0.85/1.0) | | **Data Age** | 0d | ## Metadata & Market Performance - **Publisher:** Project Petrucci LLC - **Category:** Music - **Target Audience:** Classical musicians, students, and musicologists requiring access to public domain sheet music and reference recordings. - **Platforms:** iOS & Android - **Version Audited:** 5.2.0 - **Audit Date:** 2026-05-14 - **Signal Count:** 1614 reviews analyzed - **Confidence:** High (0.85/1.0) - **App Store ID (iOS):** 1373671782 - **Bundle ID:** com.petrucci.IMSLP - **Google Play ID:** com.imslp.app - **Performance Trend:** Mixed - **Data Window:** Analysis based on signals collected up to 2026-05-14 ## Executive Snapshot **What it is:** IMSLP is a digital sheet music library app for classical musicians and musicologists, providing access to public domain scores and commercial recordings on iOS and Android. **Why users hire it:** Users hire IMSLP to access rare, archival musical scores that are otherwise difficult to locate, serving a critical need for academic and professional reference. ## App DNA (Features & Intent) - **[Differentiator] Public Domain Score Library:** Access to over 860,000 scores and 256,000 works from the Petrucci Music Library * *User Intent:* Users expect intelligent, adaptive experiences that learn from their behavior. - **[Differentiator] Commercial Recording Access:** Full access to commercial audio recordings within the app - **[Standard] Instant Download Access:** Removes wait times for downloading sheet music files * *User Intent:* Users expect intelligent, adaptive experiences that learn from their behavior. ## Market Position {#market-position} IMSLP holds a legacy position in the music category with a 4.55 average rating across 1,614 total ratings. The lack of interactive practice tools relative to competitors like MuseScore signals a risk of user migration to more feature-rich environments. ## Monetization Strategy - **Model:** Subscription - **Tiers:** Free access to public domain scores, Premium membership at 1-month subscription intervals - **Analysis:** Subscription model anchored by exclusive access to commercial recordings and accelerated download speeds. ## 🟢 User Sentiment (High Confidence: 1.6K reviews) {#user-sentiment} - **Overall Rating:** 4.4/5 - **Platform Split:** iOS 4.6/5 (497 ratings) | Android 4.3/5 (1.1K ratings) - **Overall Sentiment:** Excited ### Top Praises - **Extensive library depth** ### Top Complaints (Impact Areas) - **Lack of annotation tools** ### Top Requests (What Users Want) - **Interactive practice features** ## SWOT Analysis {#swot} **Core Strengths:** - Legacy status as the primary public domain repository for classical music - Massive, community-curated library of 860,000 scores **Critical Frictions:** - Lack of professional-grade annotation tools compared to nkoda - Absence of Bluetooth pedal support for gigging musicians **Growth Levers:** - Development of institutional access models for academic partnerships - Integration of interactive practice tools to retain power users **Market Threats:** - nkoda's licensed publisher content and professional annotation suite - MuseScore's interactive player and user-generated discovery network ## Recent Changes (v2 → v3) {#recent-changes} The report reflects a strategic shift from addressing technical stability issues to closing feature gaps in annotation and hardware support to counter professional-grade competitors. **Overall trend**: Mixed **Compared at**: 2026-05-14 ### High-impact changes - **[Shifted] Primary Nemesis Pivot** (positioning) — Competitive focus shifted from Moises (AI stem separation) to nkoda (licensed professional library and annotation suite). - **[Shifted] Complaint Theme Evolution** (sentiment) — Top complaints shifted from technical instability (offline access, sync failures) to feature gaps (lack of annotation tools). ### Medium-impact changes - **[Added] Hardware and Institutional Gaps** (swot) — Added Bluetooth pedal support as a weakness and institutional access models as an opportunity. - **[Shifted] PM Action Item Priority** (features) — Priorities shifted from fixing offline file access to developing interactive annotation tools and Bluetooth pedal integration. ## Rivals Landscape {#rivals} > Competitive positioning identified by AI analysis of app features, category, and market signals. ### IMSLP vs nkoda: sheet music — Head to Head - **[nkoda: sheet music](https://marlvel.ai/intel-report/music/nkoda-sheet-music)** by nkoda Ltd: nkoda competes directly for the professional and academic musician segment by offering a massive, licensed digital library that challenges IMSLP's public domain repository. - **Key differences:** - Offers a professional-grade annotation and toolbox suite that IMSLP currently lacks for power users. - Provides institutional access models, capturing the academic market that IMSLP serves through individual browsing. - Secures licensed publisher content, creating a premium library experience distinct from IMSLP's public domain focus. - **Where IMSLP wins:** - ✅ Massive, free public domain library that requires no subscription for core access. - ✅ Stronger community-driven trust and legacy status among classical musicians and students. - **Where nkoda: sheet music wins:** - ❌ Superior interactive annotation tools that allow for professional score marking and collaboration. - ❌ High-quality licensed publisher content that is often unavailable in public domain repositories. - **Verdict:** IMSLP should focus on improving its mobile annotation UX to prevent power users from migrating to nkoda's feature-rich environment. ### Peers (What They Do Better) - **[MuseScore－Sheet Music & Chords](https://marlvel.ai/intel-report/music/com-musescore-player)** by MuseScore BVBA: MuseScore is a direct competitor in the digital sheet music space, offering both a library and a highly interactive player for musicians. - Features a highly interactive player with instrument-specific controls that significantly enhances the practice experience. - Maintains a massive, active user-generated content library that creates a strong network effect for discovery. - **[Sheet Music Direct](https://marlvel.ai/intel-report/music/sheet-music-direct)** by Sheet Music Direct: Sheet Music Direct competes by offering a vast, high-quality catalog of modern and popular sheet music for purchase or subscription. - Includes interactive score tools that allow users to transpose keys and adjust playback in real-time. - Supports Bluetooth pedal integration, a critical hardware feature for gigging musicians that IMSLP lacks. - **[MultiTracks.com ChartBuilder](https://marlvel.ai/intel-report/music/multitracks-com-chartbuilder)** by MultiTracks.com: This app serves the worship music community, overlapping with IMSLP by providing digital sheet music and rehearsal tools for musicians. - Integrates RehearsalMix and playback sync features specifically designed for live band performance workflows. - Focuses on a niche, high-intent vertical market rather than the broad classical library approach of IMSLP. ## What's New - **Latest (v4.3.7, 2 days ago):** General bug fixes. ## App Momentum (Maintenance) {#momentum} - Maintains stable library update cadence. - Ships regular stability improvements. > **Cadence:** 2 total versions · 0 majors in last 6 months · 2 days since last update · 1 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} IMSLP is a market-leading music app that is available. With a 4.4/5 rating from 1.6K reviews, it delivers strong user satisfaction. > **Bottom Line:** IMSLP secures its market lead through an unmatched public domain repository, but the lack of interactive practice tools threatens its long-term retention of professional musicians, so the PM should prioritize shipping annotation features to prevent further migration to nkoda. **Best for:** Classical musicians, students, and musicologists requiring access to public domain sheet music and reference recordings. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] [HIGH IMPACT] Ship interactive annotation tools because user feedback identifies this as the top missing feature → increase power-user retention. — *User sentiment analysis highlights the lack of annotation tools as the primary driver for migration to competitors.* _(trade-off: deprioritize Deprioritize the development of new UI themes — annotation tools have a higher impact on user retention.)_ - [ ] [PIVOT] [MEDIUM IMPACT] Audit Bluetooth pedal integration requirements because gigging musicians cite this as a barrier to adoption → expand user base. — *Competitor analysis shows that Sheet Music Direct captures the gigging segment through hardware support.* _(trade-off: deprioritize Pause the expansion of the commercial recording library — hardware support is critical for market share expansion.)_ ### Feature Gaps vs Competitors - Professional-grade annotation suite (available in nkoda) - Bluetooth pedal integration (available in Sheet Music Direct) - Interactive playback and transposition (available in MuseScore) ### Outlook: Stable The digital sheet music market is shifting toward interactive practice environments, leaving archival-focused apps like IMSLP exposed to churn. The PM must transition the app from a passive library to an active practice tool to maintain relevance against competitors. - 🔴 The lack of professional annotation tools drives power users toward nkoda, which erodes the long-term retention of the academic segment. - 🟢 The subscription model provides a steady revenue stream that sustains the library, ensuring the app remains the primary repository for classical scores. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.4/5 | | Total Reviews | 1.6K | | Sentiment | Excited (85/100) | | Confidence | High | | Pricing Model | Subscription | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Trend | Mixed | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **IMSLP** (this app) | 4.4/5 | Excited | Project Petrucci LLC | | [MultiTracks.com ChartBuilder](https://marlvel.ai/intel-report/music/multitracks-com-chartbuilder) | 4.8/5 | Excited | MultiTracks.com | | [nkoda: sheet music](https://marlvel.ai/intel-report/music/nkoda-sheet-music) | 4.1/5 | N/A | nkoda Ltd | | [Sheet Music Direct](https://marlvel.ai/intel-report/music/sheet-music-direct) | 4.6/5 | Excited | Sheet Music Direct | | [MuseScore－Sheet Music & Chords](https://marlvel.ai/intel-report/music/com-musescore-player) | 4.6/5 | Upset | MuseScore BVBA | | [BandLab – Music Maker & Beats](https://marlvel.ai/intel-report/music/bandlab-music-maker-beats) | 4.8/5 | Frustrated | BandLab Singapore Pte Ltd | ## Company Profile - **Developer:** Project Petrucci LLC - **Website:** [https://imslp.org](https://imslp.org) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/imslp/id1373671782?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=com.imslp.app&hl=en&gl=us) - **Dev Site:** [Official Website](https://imslp.org) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*MultiTracks.com ChartBuilder*](https://marlvel.ai/intel-report/music/multitracks-com-chartbuilder) (MultiTracks.com) — 4.8/5 Rating | Positive Sentiment - [*nkoda: sheet music*](https://marlvel.ai/intel-report/music/nkoda-sheet-music) (nkoda Ltd) — 4.1/5 Rating | N/A Sentiment - [*Sheet Music Direct*](https://marlvel.ai/intel-report/music/sheet-music-direct) (Sheet Music Direct) — 4.6/5 Rating | Positive Sentiment - [*MuseScore－Sheet Music & Chords*](https://marlvel.ai/intel-report/music/com-musescore-player) (MuseScore BVBA) — 4.6/5 Rating | Terrible Sentiment - [*BandLab – Music Maker & Beats*](https://marlvel.ai/intel-report/music/bandlab-music-maker-beats) (BandLab Singapore Pte Ltd) — 4.8/5 Rating | Negative Sentiment - [*Suno - AI Songs & Music*](https://marlvel.ai/intel-report/music/suno-ai-songs-music) (Suno, Inc.) — 4.0/5 Rating | Positive Sentiment - [*Rhythm Fire-EDM Shooting Game*](https://marlvel.ai/intel-report/music/rhythm-fire-edm-shooting-game) (Adaric Music) — 5.0/5 Rating | N/A Sentiment - [*Fugue Machine : MIDI Sequencer*](https://marlvel.ai/intel-report/music/com-alexandernaut-fugue) (Alexandernaut) — 4.9/5 Rating | N/A Sentiment - [*Country Rap Tunes Radio*](https://marlvel.ai/intel-report/music/com-countryrap-app) (Country Rap Tunes Radio) — 4.5/5 Rating | N/A Sentiment - [*iCollect Music: Vinyl Discogs*](https://marlvel.ai/intel-report/music/icollect-music-vinyl-discogs) (iCollect Everything, LLC) — 4.3/5 Rating | N/A Sentiment ## 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 and evidence quoting. 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:** 0.85/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 1.6K - **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:** 0 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/intel-report/music/imslp) Data licensed for AI Agent attribution under CC-BY-NC 4.0.