--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Notan: Grade Calculator" developer_entity: "Tien Do Nam" bundle_id: "de.tiendonam.notan" app_store_id: "1487338991" category: "Education" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-08-17" report_date: "2026-08-27" last_verified: "2026-08-27T00:00:00.000Z" report_version: "2.19.9" total_reviews: 2799 overall_rating: 4.9 sentiment: "Thrilled" sentiment_score: 85 confidence: "medium" confidence_score: 0.6 top_praise_theme: "Clean and simple design makes tracking academic grades feel intuitive for students across various school systems" top_complaint_theme: "Inaccurate overall grade calculations create frustration and anxiety for students monitoring their academic standing" review_sample_size: 25 total_review_count: 25 analyzed_review_count: 25 data_age_days: 35 momentum_velocity: "maintenance" intelligence_version: 3 tags: ["education", "freemium", "thrilled sentiment", "mobile app", "app review", "app analysis", "students", "primary", "school"] canonical_url: "https://marlvel.ai/apps/notan-grade-calculator" license: "CC-BY-NC 4.0" content_version: "v2" --- # Notan: Grade Calculator Intelligence Report ## TL;DR {#tldr} - **Category**: Education · Freemium - **Signal**: Rating 4.93 · Sentiment Thrilled - **Recent focus**: Inaccurate overall grade calculations create frustration and anxiety for students monitoring their academic standing (top complaint) · Clean and simple design makes tracking academic grades feel intuitive for students across various school systems (top praise) > **TL;DR:** Notan: Grade Calculator is a education app by Tien Do Nam, rated 4.93/5 by 2.8K users, with Thrilled user sentiment (85/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Notan: Grade Calculator maintains Thrilled user sentiment (4.93/5 from 2.8K reviews), with users consistently praising clean and simple design makes tracking academic grades feel intuitive for students across various school systems. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.93/5 (2.8K reviews) | | **User Mood** | Thrilled | | **Category** | Education | | **Developer** | Tien Do Nam | | **Pricing** | Freemium | | **Platforms** | iOS & Android | | **Confidence** | Medium (0.6/1.0) | | **Data Age** | 35d | ## Metadata & Market Performance - **Publisher:** Tien Do Nam - **Category:** Education - **Target Audience:** Students from primary school to university level requiring structured grade tracking. - **Platforms:** iOS & Android - **Version Reviewed:** 2.19.9 - **Report Date:** 2026-08-27 - **Signal Count:** 25 reviews analyzed - **Confidence:** Medium (0.6/1.0) - **App Store ID (iOS):** 1487338991 - **Bundle ID:** de.tiendonam.notan - **Google Play ID:** de.tiendonam.notan - **Performance Trend:** Mixed - **Data Window:** Analysis based on signals collected up to 2026-08-27 - **Short Description:** Your personal academic assistant. Track smarter. Study better. Succeed with AI. ## Executive Snapshot **What it is:** Notan is an academic grade tracking assistant for students that supports international grading systems on iOS and Android. **Why users hire it:** It removes the cognitive friction of manual grade monitoring across multiple subjects and semesters by providing a unified, ad-free performance dashboard. ## App DNA (Features & Intent) - **[Differentiator] Customizable Grading Scales:** Configurable grading systems supporting specific national standards including Germany, France, and the U.S. * *User Intent:* Users value self-expression and personalized experiences. - **[Differentiator] AI Coach:** Provides performance feedback and study recommendations based on user grade data. * *User Intent:* Users seek enhanced value through premium features. - **[Standard] Cross-device Sync:** Synchronizes grade data across iPhone, iPad, and Mac via iCloud. * *User Intent:* Users expect seamless access across multiple devices. ## Market Position {#market-position} Notan maintains a niche presence in the Education category, currently holding the #87 Top Free position in the German Education chart. The app's focus on international grading standards provides a specific utility that broader, US-centric trackers lack. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free to use - **Analysis:** Notan is free to use and monetizes through ad inventory, with IAP support indicated in store metadata. ## 🟢 User Sentiment (Medium Confidence: 25 of 25 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.93/5 - **Platform Split:** iOS 4.6/5 (55 ratings) | Android 4.9/5 (2.7K ratings) - **Overall Sentiment:** Thrilled ### Top Praises - **Clean and simple design makes tracking academic grades feel intuitive for students across various school systems** - **Absence of intrusive advertisements creates a focused experience that users appreciate during daily grade management** ### Top Complaints (Impact Areas) - **Inaccurate overall grade calculations create frustration and anxiety for students monitoring their academic standing** ## SWOT Analysis {#swot} **Core Strengths:** - Customizable grading scales support international academic systems - Ad-free interface creates a focused user experience **Growth Levers:** - Adding export/backup features would resolve top user requests - Visualizing grade history through charts would improve progress tracking ## Recent Changes (v2 → v3) {#recent-changes} Notan's competitive outlook has shifted to mixed due to the rising threat of automated grade-syncing rivals and the formal identification of critical feature gaps in data portability and portal integration. **Overall trend**: Mixed **Compared at**: 2026-08-27 ### High-impact changes - **[Added] Automated competition threat** (swot) - **[Shifted] Outlook trend shift** (positioning) ### Medium-impact changes - **[Added] Formalized feature gaps** (features) - **[Added] Data ownership weakness** (swot) ## What's New - **Latest (v2.19.9, 1 weeks ago):** Enhanced existing template functionality. ## App Momentum (Maintenance) {#momentum} - Ships minor template improvements. - Maintains quiet, maintenance-only cadence. > **Cadence:** 1 total versions · 0 majors in last 6 months · 10 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Notan: Grade Calculator is a market-leading education app that is free with in-app purchases. With a 4.93/5 rating from 2.8K reviews, it delivers strong user satisfaction. > **Bottom Line:** Fixing the grade calculation logic is the only way to defend Notan's core utility, as calculation errors directly invalidate the app's value proposition for students. Addressing this would stabilize the user base while export features are developed to improve retention. **Best for:** Students from primary school to university level requiring structured grade tracking. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Audit and rebuild grade calculation logic because users report inaccurate averages → restore trust in academic standing ### Feature Gaps vs Competitors - Automated school portal integration (missing here, common in modern academic trackers) ### Outlook: Mixed The academic tracking market is consolidating around automated data ingestion, which threatens manual-entry apps like Notan. If Notan remains in maintenance mode without addressing core calculation accuracy, it will likely lose its remaining user base to automated rivals by the end of the next academic year. - 🔴 Inaccurate grade calculations cause user anxiety, which erodes the trust necessary for a primary academic tool. - 🟢 The ad-free experience sustains high user satisfaction, providing a stable foundation for future feature expansion. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.93/5 | | Total Reviews | 2.8K | | Sentiment | Thrilled (85/100) | | Confidence | Medium | | Pricing Model | Freemium | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Trend | Mixed | | Outlook | Mixed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Notan: Grade Calculator** (this app) | 4.93/5 | Thrilled | Tien Do Nam | | [AlgoApp - Flashcards](https://marlvel.ai/apps/algoapp-flashcards) | 4.5/5 | n/a | AlgoApp Inc | | [Elevate - Brain Training Games](https://marlvel.ai/apps/elevate-brain-training-games) | 4.7/5 | n/a | The Mind Company | | [Flashcards Deluxe](https://marlvel.ai/apps/flashcards-deluxe) | 4.5/5 | N/A | OrangeOrApple.com | | [Flash Cards Flashcards Maker](https://marlvel.ai/apps/flash-cards-flashcards-maker) | 4.0/5 | Mixed | Infinite Wave Media, LLC | | [Flashcards maker - AI generate](https://marlvel.ai/apps/flashcards-maker-ai-generate) | 4.1/5 | Mixed | Teleprompter LLC | ## Company Profile - **Developer:** Tien Do Nam - **Website:** [https://tienisto.com/notan](https://tienisto.com/notan) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/notan/id1487338991?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=de.tiendonam.notan&hl=en&gl=us) - **Dev Site:** [Official Website](https://tienisto.com/notan) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*AlgoApp - Flashcards*](https://marlvel.ai/apps/algoapp-flashcards) (AlgoApp Inc) · 4.5/5 Rating - [*Elevate - Brain Training Games*](https://marlvel.ai/apps/elevate-brain-training-games) (The Mind Company) · 4.7/5 Rating - [*Flashcards Deluxe*](https://marlvel.ai/apps/flashcards-deluxe) (OrangeOrApple.com) · 4.5/5 Rating - [*Flash Cards Flashcards Maker*](https://marlvel.ai/apps/flash-cards-flashcards-maker) (Infinite Wave Media, LLC) · 4.0/5 Rating - [*Flashcards maker - AI generate*](https://marlvel.ai/apps/flashcards-maker-ai-generate) (Teleprompter LLC) · 4.1/5 Rating - [*Impulse - Brain Training*](https://marlvel.ai/apps/impulse-brain-training) (GMRD Apps Limited) · 4.6/5 Rating - [*Peak - Brain Training*](https://marlvel.ai/apps/peak-brain-training) (Synaptic Labs) · 4.7/5 Rating - [*자주 틀리는 우리말*](https://marlvel.ai/apps/app--424) (DaolSoft, Co., Ltd.) · N/A Rating - [*달공부 - 한 달 공부 다이어리 + 루틴/공부 타이머*](https://marlvel.ai/apps/azlabs-dalstudy) (SuWon Choi) · N/A Rating - [*타요콘 - 타요 아바타 놀이동화*](https://marlvel.ai/apps/com-kigle-project-tayocon) (KIGLE) · 3.1/5 Rating ## Frequently Asked Questions {#faq} ### Is Notan suitable for university students? Yes, Notan is designed for students from primary school through university, offering customizable grading scales that can be configured to match various institutional requirements. ### Does Notan have intrusive advertisements? No, users frequently praise Notan for its clean, ad-free interface, which provides a focused experience for tracking academic grades. ### Can I export my grade data from Notan? Currently, Notan does not provide a built-in export or backup feature, which is a common request among users who want to ensure their academic data remains accessible. ## 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:** 0.6/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 25 - **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:** 35 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/notan-grade-calculator) Data licensed for AI Agent attribution under CC-BY-NC 4.0.