---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "Fraction Calculator-Decimal RA"
developer_entity: "智菲 杨"
bundle_id: "com.fract.lator"
app_store_id: "6752008457"
category: "Utilities"
primary_platform: "ios"
primary_monetization: "Free"
offline_capable: false
market_region: "US"
platforms: "iOS"
app_last_updated: "2026-04-16"
report_date: "2026-08-13"
last_verified: "2026-08-13T00:00:00.000Z"
report_version: "1.4"
total_reviews: 13
overall_rating: 4.1
sentiment: "Upset"
sentiment_score: 10
confidence: "medium"
confidence_score: 0.45
top_complaint_theme: "Aggressive ad placement interrupts core feature navigation, preventing users from accessing basic app functionality"
review_sample_size: 1
total_review_count: 1
analyzed_review_count: 1
data_age_days: 3
momentum_velocity: "maintenance"
intelligence_version: 3
tags: ["utilities", "free", "upset sentiment", "mobile app", "app review", "app analysis", "students,", "teachers,", "professionals"]
canonical_url: "https://marlvel.ai/apps/fraction-calculator-decimal-ra"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# Fraction Calculator-Decimal RA Intelligence Report

## TL;DR {#tldr}

- **Category**: Utilities · Free
- **Signal**: Rating 4.08 · Sentiment Upset
- **Recent focus**: Aggressive ad placement interrupts core feature navigation, preventing users from accessing basic app functionality (top complaint)

> **TL;DR:** Fraction Calculator-Decimal RA is a utilities app by 智菲 杨, rated 4.08/5 by 13 users, with Upset user sentiment (10/100), available on iOS.
>
> **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** Fraction Calculator-Decimal RA faces Upset user sentiment (4.08/5 from 13 reviews), with users reporting aggressive ad placement interrupts core feature navigation, preventing users from accessing basic app functionality as the primary concern.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 4.08/5 (13 reviews) |
| **User Mood** | Upset |
| **Category** | Utilities |
| **Developer** | 智菲 杨 |
| **Pricing** | Free |
| **Platforms** | iOS |
| **Confidence** | Medium (0.45/1.0) |
| **Data Age** | 3d |

## Metadata & Market Performance
- **Publisher:** 智菲 杨
- **Category:** Utilities
- **Target Audience:** Students, teachers, and professionals requiring a tool for fraction-based mathematical operations.
- **Platforms:** iOS
- **Version Reviewed:** 1.4
- **Report Date:** 2026-08-13
- **Signal Count:** 1 review analyzed
- **Confidence:** Medium (0.45/1.0)
- **App Store ID (iOS):** 6752008457
- **Bundle ID:** com.fract.lator
- **Performance Trend:** Declining
- **Data Window:** Analysis based on signals collected up to 2026-08-13

<!-- section:executive-snapshot -->
## Executive Snapshot
**What it is:** Fraction Calculator-Decimal RA is a utility app for students and professionals that performs fraction arithmetic and decimal conversion on iOS.
**Why users hire it:** Users hire this app to automate fraction-based math and track learning errors, but the current ad-heavy experience forces users to seek more stable alternatives.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Standard] Fraction Calculation Engine:** Supports addition, subtraction, multiplication, and division of fractions.
- **[Differentiator] Practice Mode:** Interactive exercises for reinforcing fraction knowledge; increases session frequency.
- **[Differentiator] Wrong Answer Book:** Tracks user mistakes and provides detailed explanations; increases switching cost via personalized error history.
  * *User Intent:* Users value self-expression and personalized experiences.
<!-- /section:features -->

<!-- section:market-position -->
## Market Position {#market-position}

The app maintains a 4.08 rating across 13 total ratings, but the lack of updates for 118 days suggests a maintenance-mode posture.
<!-- /section:market-position -->

## Monetization Strategy
- **Model:** Free
- **Tiers:** Free
- **Analysis:** The app is currently offered as a free utility with no visible in-app purchase or subscription gates.

<!-- section:sentiment -->
## 🔴 User Sentiment (Medium Confidence: 1 of 1 review analyzed) {#user-sentiment}
- **Overall Rating:** 4.08/5
- **Platform Split:** iOS 4.1/5 (13 ratings)
- **Overall Sentiment:** Upset
- **Note:** The 4.08/5 store rating reflects cumulative history, while the Upset sentiment reflects recent user reviews analyzed by our AI pipeline.

### Top Complaints (Impact Areas)

- **Aggressive ad placement interrupts core feature navigation, preventing users from accessing basic app functionality**

<!-- /section:sentiment -->
<!-- section:swot -->
## SWOT Analysis {#swot}

**Core Strengths:**
- Wrong-answer book creates personalized error history

**Growth Levers:**
- Education partnerships offer B2B distribution potential


<!-- /section:swot -->
## Recent Changes (v2 → v3) {#recent-changes}

The app's competitive position has declined due to a prolonged 118-day update gap, which is now explicitly identified as a strategic vulnerability in the SWOT analysis and outlook.

**Overall trend**: Declining
**Compared at**: 2026-08-13

### Medium-impact changes
- **[Added] Update gap identified as threat** (swot)
- **[Shifted] Maintenance-mode visibility** (positioning)

### Low-impact changes
- **[Shifted] Contrarian take pivot** (positioning)

<!-- section:whats-new -->
## What's New

- **Latest (v1.4, 3 months ago):** General bug fixes.
<!-- /section:whats-new -->

<!-- section:momentum -->
## App Momentum (Maintenance) {#momentum}

- Ships only minor bug fixes.
- Last major release 3 months ago.

> **Cadence:** 1 total versions · 0 majors in last 6 months · 118 days since last update

<!-- /section:momentum -->

<!-- section:so-what -->
## The "So What?" (Strategic Takeaway) {#so-what}

Fraction Calculator-Decimal RA is an utilities app that is completely free.
It holds a 4.08/5 rating from 13 reviews.

<!-- speakable-start -->
> **Bottom Line:** Fraction Calculator-Decimal RA provides a functional tool for fraction operations, but the aggressive ad-triggering during navigation creates a high churn risk, so the team must prioritize stabilizing the user experience before the current sentiment drag erodes the install base.
<!-- speakable-end -->

**Best for:** Students, teachers, and professionals requiring a tool for fraction-based mathematical operations.

<!-- section:pm-actions -->
### PM Action Plan (Next Best Moves)

- [ ] [PIVOT] Pivot ad-trigger logic because current ad-frequency prevents feature navigation → reduce churn rate
<!-- /section:pm-actions -->

<!-- section:outlook -->
### Outlook: Declining

The educational utility market is consolidating around ad-free or subscription-based models that prioritize user flow. Continued reliance on aggressive ad-interruption will accelerate churn as users migrate to more stable alternatives, so the team must pivot to a less intrusive monetization model to protect the remaining user base.

- 🔴 Aggressive ad-triggering during feature navigation erodes the daily active habit, which compounds the sentiment drag already visible in user reviews.
- 🔴 The 118-day update gap signals a maintenance-only posture, leaving the app exposed to competitors with faster feature-release cycles.
<!-- /section:outlook -->

<!-- /section:so-what -->

<!-- section:metrics -->
## Key Metrics Summary

| Metric | Value |
| :--- | :--- |
| Overall Rating | 4.08/5 |
| Total Reviews | 13 |
| Sentiment | Upset (10/100) |
| Confidence | Medium |
| Pricing Model | Free |
| Platforms | iOS |
| Key Features | 3 analyzed |
| Trend | Declining |
| Outlook | Declining |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **Fraction Calculator-Decimal RA** (this app) | 4.08/5 | Upset | 智菲 杨 |
| [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 |
| [Quantumult X](https://marlvel.ai/apps/quantumult-x) | 3.8/5 | N/A | Cross Utility Ltd |

## Company Profile
- **Developer:** 智菲 杨
- **Website:** [https://foxc.ijoftyg.cn](https://foxc.ijoftyg.cn)

## Data Sources & Links
- **App Store:** [View on Apple Store](https://apps.apple.com/us/app/fraction-calculator-decimal-ra/id6752008457?uo=4)
- **Dev Site:** [Official Website](https://foxc.ijoftyg.cn)
- **Sources:** Developer website content, App store metadata, User reviews.

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- [*Potatso*](https://marlvel.ai/apps/potatso) (Potatso Lab LTD) · 4.4/5 Rating
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## 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:** 1
- **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:** 3 days since last refresh

---
© 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/fraction-calculator-decimal-ra)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.