--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Numboard – Scientific Keyboard" developer_entity: "Zetegy LLC" bundle_id: "com.philzet.numboard" app_store_id: "1175536307" category: "Utilities" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2019-11-24" report_date: "2026-08-20" last_verified: "2026-08-20T00:00:00.000Z" report_version: "1.5" total_reviews: 23 overall_rating: 2.1 sentiment: "Frustrated" sentiment_score: 25 confidence: "high" confidence_score: 0.7 top_praise_theme: "The keyboard provides a useful set of mathematical symbols that assist students with algebra homework" top_complaint_theme: "Users report that essential keyboard symbols are locked behind a paywall, rendering the app unusable" review_sample_size: 20 total_review_count: 20 analyzed_review_count: 20 data_age_days: 42 momentum_velocity: "zombie" intelligence_version: 3 tags: ["utilities", "free", "frustrated sentiment", "mobile app", "app review", "app analysis", "students,", "teachers,", "academic"] canonical_url: "https://marlvel.ai/apps/numboard-scientific-keyboard" license: "CC-BY-NC 4.0" content_version: "v2" --- # Numboard – Scientific Keyboard Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Free - **Signal**: Rating 2.13 · Sentiment Frustrated - **Recent focus**: Users report that essential keyboard symbols are locked behind a paywall, rendering the app unusable (top complaint) · The keyboard provides a useful set of mathematical symbols that assist students with algebra homework (top praise) > **TL;DR:** Numboard – Scientific Keyboard is a utilities app by Zetegy LLC, rated 2.13/5 by 23 users, with Frustrated user sentiment (25/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Numboard – Scientific Keyboard faces Frustrated user sentiment (2.13/5 from 23 reviews), with users reporting users report that essential keyboard symbols are locked behind a paywall, rendering the app unusable as the primary concern. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 2.13/5 (23 reviews) | | **User Mood** | Frustrated | | **Category** | Utilities | | **Developer** | Zetegy LLC | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | High (0.7/1.0) | | **Data Age** | 42d | ## Metadata & Market Performance - **Publisher:** Zetegy LLC - **Category:** Utilities - **Target Audience:** Students, teachers, and academic professionals requiring specialized mathematical notation on mobile devices. - **Platforms:** iOS - **Version Reviewed:** 1.5 - **Report Date:** 2026-08-20 - **Signal Count:** 20 reviews analyzed - **Confidence:** High (0.7/1.0) - **App Store ID (iOS):** 1175536307 - **Bundle ID:** com.philzet.numboard - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-08-20 ## Executive Snapshot **What it is:** Numboard is a specialized iOS keyboard extension providing over 110 mathematical symbols and real-time expression evaluation for students and teachers. **Why users hire it:** The app removes the friction of switching between standard keyboards and math-heavy notation tools during homework completion. ## App DNA (Features & Intent) - **[Differentiator] Math Symbol Library:** Keyboard extension providing over 110 math symbols, including subscripts and superscripts, for use in any iOS application. * *User Intent:* Users seek enhanced value through premium features. - **[Differentiator] Real-time Expression Evaluation:** Calculates math expressions, including roots, powers, and variables, directly within the keyboard interface. - **[Standard] System-wide Keyboard Extension:** Integrates as a standard iOS keyboard extension for use across all installed apps. ## Market Position {#market-position} Numboard holds a 2.13-star rating across 23 total reviews, indicating a disconnect between its utility and user expectations. The lack of updates since 2019 signals that the developer has deprioritized the app, leaving it vulnerable to more active academic tools. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** The app is offered as a free utility, but users report that essential symbols are locked behind a paywall, creating significant friction. ## 🔴 User Sentiment (High Confidence: 20 of 20 reviews analyzed) {#user-sentiment} - **Overall Rating:** 2.13/5 - **Platform Split:** iOS 2.1/5 (23 ratings) - **Overall Sentiment:** Frustrated ### Top Praises - **The keyboard provides a useful set of mathematical symbols that assist students with algebra homework** ### Top Complaints (Impact Areas) - **Users report that essential keyboard symbols are locked behind a paywall, rendering the app unusable** ## SWOT Analysis {#swot} **Core Strengths:** - 110-symbol library provides specific academic utility **Growth Levers:** - Adding horizontal fraction bars addresses top user request ## What's New - **Latest (v1.5, 6 years ago):** Introduced full keyboard customization for Unicode symbols and added support for iOS 13 and Dark Mode. ## App Momentum (Zombie) {#momentum} - No major updates since late 2019. - Maintenance-only cadence for six years. > **Cadence:** 1 total versions · 1 majors in last 6 months · 2460 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Numboard – Scientific Keyboard is an utilities app that is completely free. With a 2.13/5 rating from 23 reviews, it faces significant user friction. > **Bottom Line:** Numboard's specialized symbol library retains a niche academic audience, but the lack of updates and restrictive paywall erode its utility. A pivot to a transparent monetization model would address the sentiment drag currently suppressing user adoption. **Best for:** Students, teachers, and academic professionals requiring specialized mathematical notation on mobile devices. ### PM Action Plan (Next Best Moves) - [ ] [PIVOT] Pivot monetization to a transparent model because the current paywall is the top complaint → reduce negative sentiment ### Outlook: Declining The academic utility market is shifting toward more responsive, frequently updated tools that integrate better with modern mobile workflows. Numboard's lack of development since 2019 leaves it exposed to churn, as students migrate to tools that offer more natural equation composition. - 🔴 The six-year development gap indicates a lack of active investment, which erodes user trust and prevents the app from evolving with iOS standards. - 🔴 Persistent complaints regarding the paywall and missing formatting features suggest that the current product-market fit is failing to satisfy the core student audience. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 2.13/5 | | Total Reviews | 23 | | Sentiment | Frustrated (25/100) | | Confidence | High | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Trend | Stable | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Numboard – Scientific Keyboard** (this app) | 2.13/5 | Frustrated | Zetegy LLC | | [Sota Connect: Secure Network](https://marlvel.ai/apps/fi-catconnect-sota) | 4.9/5 | N/A | Cat Connect | | [avoVPN Desktop](https://marlvel.ai/apps/avovpn-desktop) | N/A/5 | N/A | Avocado VPN Technologies | | [Free VPN by Free VPN .org™](https://marlvel.ai/apps/free-vpn-by-free-vpn-org) | 4.5/5 | Mixed | Free VPN LLC | | [Fusvob VPN : Super VPN 2026](https://marlvel.ai/apps/com-toplinkc-foxexcellent) | 4.4/5 | Mixed | Fuxin Technology | | [Potatso](https://marlvel.ai/apps/potatso) | 4.4/5 | n/a | Potatso Lab LTD | ## Company Profile - **Developer:** Zetegy LLC - **Website:** [https://zetstudios.com](https://zetstudios.com) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/numboard-scientific-keyboard/id1175536307?uo=4) - **Dev Site:** [Official Website](https://zetstudios.com) - **Sources:** Developer website content, About us / company information, App store metadata, User reviews. ## Related Intel Reports - [*Sota Connect: Secure Network*](https://marlvel.ai/apps/fi-catconnect-sota) (Cat Connect) · 4.9/5 Rating - [*avoVPN Desktop*](https://marlvel.ai/apps/avovpn-desktop) (Avocado VPN Technologies) · N/A Rating - [*Free VPN by Free VPN .org™*](https://marlvel.ai/apps/free-vpn-by-free-vpn-org) (Free VPN LLC) · 4.5/5 Rating - [*Fusvob VPN : Super VPN 2026*](https://marlvel.ai/apps/com-toplinkc-foxexcellent) (Fuxin Technology) · 4.4/5 Rating - [*Potatso*](https://marlvel.ai/apps/potatso) (Potatso Lab LTD) · 4.4/5 Rating - [*Quantumult X*](https://marlvel.ai/apps/quantumult-x) (Cross Utility Ltd) · 3.8/5 Rating - [*V2Box - V2ray Client*](https://marlvel.ai/apps/v2box-v2ray-client) (techlaim) · 4.6/5 Rating - [*카톡 분석 - 오픈채팅, 카톡 채팅 분석, 통계, 검색*](https://marlvel.ai/apps/com-liger-katalkanalysispaid) (Park Sung Cheol) · N/A Rating - [*로또 황금번호 생성기*](https://marlvel.ai/apps/lotto-lottogold) (jaehwan lee) · N/A Rating - [*도사폰 (만세력 역학도구)*](https://marlvel.ai/apps/app--656) (Softchaser Company Limited) · 5.0/5 Rating ## Frequently Asked Questions {#faq} ### Is Numboard suitable for advanced math homework? Numboard provides over 110 math symbols, which users find helpful for algebra. However, it lacks advanced formatting like horizontal fraction bars, which may limit its usefulness for more complex equations. ### Does Numboard have a free version? Numboard is free to download, but users report that essential symbols are locked behind a paywall, which has led to significant negative feedback. ### What are the limitations of the current version? The app has not received a major update since 2019. Users frequently report frustration with the paywall and the inability to format complex expressions like fractions and superscripts. ## 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:** 0.7/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 20 - **Data Sources:** user reviews, developer website, company about page, 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:** 42 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/numboard-scientific-keyboard) Data licensed for AI Agent attribution under CC-BY-NC 4.0.