--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Zperiod - Periodic Table" developer_entity: "Alejandro Hernandez Mitre" bundle_id: "com.mitre88.zperiod" app_store_id: "6761690452" google_play_id: "com.zakirshikhli.mendeleyevcedveli" category: "Education" primary_platform: "ios" primary_monetization: "Paid" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-04-07" report_date: "2026-05-11" last_verified: "2026-05-11T23:35:49.082Z" report_version: "1.0" total_reviews: 0 confidence: "low" confidence_score: 0.15 data_age_days: 1 intelligence_version: 3 nemesis: "Chemistry. Periodic table. AI" competitor_count: 7 tags: ["education", "paid", "mobile app", "app review", "app analysis", "chemistry", "students,", "educators,"] canonical_url: "https://marlvel.ai/intel-report/education/com-mitre88-zperiod" license: "CC-BY-NC 4.0" content_version: "v2" --- # Zperiod - Periodic Table App Audit ## TL;DR {#tldr} - **Category**: Education · Paid > **TL;DR:** Zperiod - Periodic Table is a education app by Alejandro Hernandez Mitre, available on iOS & Android. > > **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence. > **Key Insight:** Zperiod - Periodic Table is a education app by Alejandro Hernandez Mitre. ## Quick Facts | Fact | Value | | :--- | :--- | | **Category** | Education | | **Developer** | Alejandro Hernandez Mitre | | **Pricing** | Paid | | **Platforms** | iOS & Android | | **Confidence** | Low (0.15/1.0) | | **Data Age** | 0d | ## Metadata & Market Performance - **Publisher:** Alejandro Hernandez Mitre - **Category:** Education - **Target Audience:** Chemistry students, educators, and science enthusiasts seeking interactive study tools and printable resources. - **Platforms:** iOS & Android - **Version Audited:** 1.0 - **Audit Date:** 2026-05-11 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.15/1.0) - **App Store ID (iOS):** 6761690452 - **Bundle ID:** com.mitre88.zperiod - **Google Play ID:** com.zakirshikhli.mendeleyevcedveli - **Performance Trend:** Mixed - **Data Window:** Analysis based on signals collected up to 2026-05-11 - **Short Description:** Essential chemical element guide with photos, facts, and offline search ## Executive Snapshot **What it is:** Zperiod is a chemistry reference app for iOS and Android featuring 3D atom models and worksheet generation. **Why users hire it:** Students and educators hire the app to visualize atomic structures and automate chemistry homework, replacing manual reference methods with interactive tools. ## App DNA (Features & Intent) - **[Differentiator] 3D Bohr Atom Models:** Interactive models using SceneKit to rotate, zoom, and explore electron shells - **[Differentiator] Chemical Equation Balancer:** Tool using a Gaussian elimination algorithm to balance equations with an animated scale - **[Differentiator] Worksheet Generator:** Tool to create and export printable PDF chemistry worksheets with configurable difficulty ## Market Position {#market-position} Zperiod ranks #59 in the US Paid Education category, signaling a niche entry in a crowded market. The lack of rating data suggests the app is in the early acquisition phase, trailing established rivals with thousands of reviews. ## Monetization Strategy - **Model:** Paid - **Tiers:** iOS: $2.99 one-time purchase, Android: Free - **Price:** iOS: $2.99 - **Analysis:** The iOS version utilizes a paid model to gate premium visualization features, while the Android version functions as a free utility. ## SWOT Analysis {#swot} **Core Strengths:** - 3D SceneKit atom models provide visual differentiation - Worksheet generator creates tangible classroom utility - Offline-first architecture ensures reliability in school environments **Critical Frictions:** - $2.99 price point exceeds category median - Zero rating count indicates low social proof - No AI-assisted problem solving features **Growth Levers:** - B2B distribution into school districts - Wearable integration for quick element reference **Market Threats:** - AI-centric rivals capturing problem-solving workflows - High-velocity homework-help apps like Brainly dominating student screen time ## Recent Changes (v2 → v3) {#recent-changes} The app transitioned to a platform-specific pricing model and formalized its competitive stance against AI-driven chemistry tools. **Overall trend**: Mixed **Compared at**: 2026-05-11 ### High-impact changes - **[Shifted] Platform-specific pricing** (pricing) — Pricing changed from a uniform paid model to a split structure: $2.99 on iOS and free on Android. - **[Improved] Feature positioning** (features) — 3D Bohr Atom Models, Chemical Equation Balancer, and Worksheet Generator were reclassified from 'standard' to 'differentiator' status. ### Medium-impact changes - **[Added] Formalized SWOT and competitive landscape** (positioning) — Added comprehensive SWOT analysis and competitive benchmarking against AI-centric rivals like Chemistry. Periodic table. AI. ## Rivals Landscape {#rivals} > Competitive positioning identified by AI analysis of app features, category, and market signals. ### Zperiod - Periodic Table vs Chemistry. Periodic table. AI — Head to Head - **Chemistry. Periodic table. AI** by Denis Chashchin: This is the most direct thematic competitor, offering a mature, specialized periodic table experience with a large, established user base. - **Moat strength:** Medium — durable but contestable - **Key differences:** - Integrates AI-driven chemistry assistance which provides a significant functional edge over static reference tables. - Maintains a long-standing presence in the education category with a proven, high-retention feature set. - Offers a specialized focus on chemistry problem solving rather than just element visualization. - **Where Zperiod - Periodic Table wins:** - ✅ Provides a more modern, visually immersive experience with 3D Bohr atom models for better engagement. - ✅ Includes integrated chemistry worksheet generation which offers tangible utility for students and educators. - **Where Chemistry. Periodic table. AI wins:** - ❌ Leverages AI-powered chemistry assistance to solve complex equations beyond simple visual scaling. - ❌ Benefits from over a decade of user feedback and iterative refinement within the chemistry niche. - **Verdict:** The target app must emphasize its superior 3D visualization and worksheet utility to differentiate from the AI-centric, established workflow of the nemesis. ### Contenders (Strong Challengers) - **[Periodic Table Quiz](https://marlvel.ai/intel-report/education/periodic-table-quiz)** by Leticia Vila [Moat: Medium]: A high-volume competitor that captures the 'study and testing' segment of the chemistry education market. - Focuses on gamified learning and quiz mechanics rather than the target's reference-first approach. - Targets the high-frequency study session user who prioritizes active recall over passive element exploration. ### Peers (What They Do Better) - **[WolframAlpha Classic](https://marlvel.ai/intel-report/reference/com-wolframalpha-wolframalpha)** by Wolfram Group LLC: An adjacent reference tool that serves as a broad-spectrum alternative for chemistry data and calculations. - Provides computational intelligence across all scientific domains, making it a broader utility than a niche table. - Offers deep, authoritative data sets that exceed the scope of a dedicated periodic table application. - **[Calculator #](https://marlvel.ai/intel-report/utilities/calculator-1)** by Incpt.Mobis: A utility-focused app that competes for the user's screen time during chemistry homework sessions. - Provides a multi-functional utility environment that handles general math alongside specialized scientific calculations. - Optimized for high-frequency, short-duration tasks rather than the deep-dive educational experience of the target. - **[Scriptable](https://marlvel.ai/intel-report/developer-tools/dk-simonbs-scriptable)** by Simon B. Støvring: An adjacent tool for power users who build their own chemistry automation workflows. - Allows users to build custom widgets and automations, appealing to the prosumer segment of the market. - Offers a platform-level flexibility that a static, feature-locked periodic table app cannot match. ### New Kids on the Block (What's Innovative) - **[Brainly: Your Personal Tutor](https://marlvel.ai/intel-report/education/com-brainly-us)** by Brainly sp. z o o: An aggressive, high-velocity competitor that dominates the homework-help space with frequent updates. - **[Khan Academy](https://marlvel.ai/intel-report/education/org-khanacademy-khan-academy)** by Khan Academy: A major educational player that provides comprehensive chemistry video content and structured learning paths. ## App Momentum (Steady) {#momentum} - Released initial iOS version in April 2026. - Ships minor Android content updates. ## The "So What?" (Strategic Takeaway) {#so-what} Zperiod - Periodic Table is an established education app that is a paid app. > **Bottom Line:** Zperiod delivers high-value visualization tools, but the $2.99 price barrier prevents the social proof needed to compete with established rivals, so the PM should prioritize a free-to-try model to accelerate user acquisition. **Best for:** Chemistry students, educators, and science enthusiasts seeking interactive study tools and printable resources. ### PM Action Plan (Next Best Moves) - [ ] [PIVOT] [HIGH IMPACT] Ship a free-to-try model on iOS because the $2.99 barrier prevents user acquisition → increase install velocity — *The app has zero ratings, indicating that the paid-gate is preventing the initial user base from forming.* _(trade-off: deprioritize Pause the worksheet generator feature expansion — acquisition is the current priority over feature depth.)_ - [ ] [MAINTAIN] [MEDIUM IMPACT] Audit the Android ad-free utility value because it competes with the iOS paid version → clarify brand positioning — *The free Android version undermines the perceived value of the paid iOS version.* _(trade-off: deprioritize Same-quarter capacity available — no major lever displaced.)_ ### Feature Gaps vs Competitors - AI-driven chemistry assistance (available in Chemistry. Periodic table. AI) - Gamified quiz mechanics (available in Periodic Table Quiz) ### Outlook: Stable The chemistry education market is consolidating around AI-assisted problem solvers, which leaves static reference apps like Zperiod exposed. The app must transition to a freemium model to build the user base required to compete with established incumbents. - ⚪ The app maintains a steady release cadence for bug fixes, but lacks the aggressive feature expansion needed to challenge category leaders. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Total Reviews | 0 | | Confidence | Low | | Pricing Model | Paid | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Trend | Mixed | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Zperiod - Periodic Table** (this app) | N/A/5 | N/A | Alejandro Hernandez Mitre | | [Brainly: Your Personal Tutor](https://marlvel.ai/intel-report/education/com-brainly-us) | 4.7/5 | N/A | Brainly sp. z o o | | [Scriptable](https://marlvel.ai/intel-report/developer-tools/dk-simonbs-scriptable) | 4.8/5 | N/A | Simon B. Støvring | | [WolframAlpha Classic](https://marlvel.ai/intel-report/reference/com-wolframalpha-wolframalpha) | 4.1/5 | N/A | Wolfram Group LLC | | [Khan Academy](https://marlvel.ai/intel-report/education/org-khanacademy-khan-academy) | 4.6/5 | Excited | Khan Academy | | [Calculator #](https://marlvel.ai/intel-report/utilities/calculator-1) | 4.6/5 | Frustrated | Incpt.Mobis | ## Company Profile - **Developer:** Alejandro Hernandez Mitre - **Website:** [https://www.facebook.com/shikhli](https://www.facebook.com/shikhli) - **Social:** [Instagram](https://www.instagram.com/meta) · [Facebook](https://www.facebook.com/Meta) · [X/Twitter](https://twitter.com/Meta) · [YouTube](https://www.youtube.com/meta) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/zperiod-periodic-table/id6761690452?uo=2) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=com.zakirshikhli.mendeleyevcedveli&hl=en&gl=us) - **Dev Site:** [Official Website](https://www.facebook.com/shikhli) - **Sources:** About us / company information, App store metadata. ## Related Intel Reports - [*Brainly: Your Personal Tutor*](https://marlvel.ai/intel-report/education/com-brainly-us) (Brainly sp. z o o) — 4.7/5 Rating | N/A Sentiment - [*Scriptable*](https://marlvel.ai/intel-report/developer-tools/dk-simonbs-scriptable) (Simon B. Støvring) — 4.8/5 Rating | N/A Sentiment - [*WolframAlpha Classic*](https://marlvel.ai/intel-report/reference/com-wolframalpha-wolframalpha) (Wolfram Group LLC) — 4.1/5 Rating | N/A Sentiment - [*Khan Academy*](https://marlvel.ai/intel-report/education/org-khanacademy-khan-academy) (Khan Academy) — 4.6/5 Rating | Positive Sentiment - [*Calculator #*](https://marlvel.ai/intel-report/utilities/calculator-1) (Incpt.Mobis) — 4.6/5 Rating | Negative Sentiment - [*Periodic Table Quiz*](https://marlvel.ai/intel-report/education/periodic-table-quiz) (Leticia Vila) — 4.7/5 Rating | N/A Sentiment - [*AlgoApp - Flashcards*](https://marlvel.ai/intel-report/education/algoapp-flashcards) (AlgoApp Inc) — 4.6/5 Rating | Mixed Sentiment - [*Flashcards Deluxe*](https://marlvel.ai/intel-report/education/flashcards-deluxe) (OrangeOrApple.com) — 4.5/5 Rating | Excellent Sentiment - [*Flash Cards Flashcards Maker*](https://marlvel.ai/intel-report/education/flash-cards-flashcards-maker) (Infinite Wave Media, LLC) — 4.0/5 Rating | Mixed Sentiment - [*Flashcards maker - AI generate*](https://marlvel.ai/intel-report/education/flashcards-maker-ai-generate) (Teleprompter LLC) — 4.1/5 Rating | Mixed 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:** 0.15/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 0 - **Data Sources:** 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:** 0 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/intel-report/education/com-mitre88-zperiod) Data licensed for AI Agent attribution under CC-BY-NC 4.0.