## ⚠ Content Warning

This report covers topics classified as sensitive (health). Information is aggregated from public sources for informational purposes only. This is not medical advice. Consult a qualified professional before acting on any information here.

---
last_verified: "2026-05-13T22:48:46.162Z"
---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "Color Blindness Test Ishihara"
developer_entity: "Rina Katrina"
bundle_id: "com.colorblind.ishiharatest"
app_store_id: "1527379118"
google_play_id: "com.ishihara.colorblind"
category: "Medical"
primary_platform: "ios"
primary_monetization: "Free"
offline_capable: false
market_region: "US"
platforms: "iOS & Android"
app_last_updated: "2025-04-21"
report_date: "2026-05-13"
last_verified: "2026-05-13"
report_version: "1.1.0"
total_reviews: 1
overall_rating: 3
confidence: "low"
confidence_score: 0.5
data_age_days: 0
momentum_velocity: "maintenance"
intelligence_version: 3
nemesis: "Color Blind Pal"
competitor_count: 1
tags: ["medical", "free", "mobile app", "app review", "app analysis", "individuals", "seeking", "personal"]
canonical_url: "https://marlvel.ai/intel-report/medical/color-blindness-test-ishihara"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# Color Blindness Test Ishihara App Audit

## TL;DR {#tldr}

- **Category**: Medical · Free
- **Signal**: Rating 3

> **TL;DR:** Color Blindness Test Ishihara is a medical app by Rina Katrina, rated 3/5 by 1 users, available on iOS & Android.
>
> **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** Color Blindness Test Ishihara is a medical app by Rina Katrina.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 3/5 (1 reviews) |
| **Category** | Medical |
| **Developer** | Rina Katrina |
| **Pricing** | Free |
| **Platforms** | iOS & Android |
| **Confidence** | Low (0.5/1.0) |
| **Data Age** | 0d |

## Metadata & Market Performance
- **Publisher:** Rina Katrina
- **Category:** Medical
- **Target Audience:** Individuals seeking personal color vision assessment and professionals requiring a screening tool for color blindness.
- **Platforms:** iOS & Android
- **Version Audited:** 1.1.0
- **Audit Date:** 2026-05-13
- **Signal Count:** 8 reviews analyzed
- **Confidence:** Low (0.5/1.0)
- **App Store ID (iOS):** 1527379118
- **Bundle ID:** com.colorblind.ishiharatest
- **Google Play ID:** com.ishihara.colorblind
- **Performance Trend:** Declining
- **Data Window:** Analysis based on signals collected up to 2026-05-13

<!-- section:executive-snapshot -->
## Executive Snapshot
**What it is:** Color Blindness Test Ishihara is a diagnostic tool for color vision deficiency using standard Ishihara plates on iOS and Android.
**Why users hire it:** Users hire this app for a quick, low-friction assessment of their color vision status, but the lack of ongoing assistive utility means they churn immediately after the first test.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Standard] Ishihara Test Method:** Standardized color vision assessment using Ishihara plates to identify deficiency types and severity
- **[Standard] Personalized Vision Status Report:** Aggregates test results to provide a summary of the user's color vision deficiency status
  * *User Intent:* Users value self-expression and personalized experiences.
- **[Differentiator] Professional Screening Mode:** Configured for clinical or professional use cases to assess color distinction capabilities
  * *User Intent:* Users seek enhanced value through premium features.
<!-- /section:features -->

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

The app maintains a basic diagnostic presence on iOS with a 3-star rating, but the lack of Android traction (zero ratings) signals a failure to establish a cross-platform footprint.
<!-- /section:market-position -->

## Monetization Strategy
- **Model:** Free
- **Tiers:** Free access to all test features
- **Analysis:** The app operates on a free-to-use model with no visible in-app purchases or subscription tiers.

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

**Core Strengths:**
- Professional screening mode provides specialized clinical utility
- Free-to-use model removes friction for initial acquisition

**Critical Frictions:**
- Static testing utility lacks daily-use retention loops
- No monetization strategy limits development capacity
- Zero Android rating count indicates poor visibility

**Growth Levers:**
- Integration of real-time assistive color correction filters
- B2B partnerships with clinical or educational institutions

**Market Threats:**
- Established rivals with multi-year engagement records
- Lack of feature updates invites disruption by active competitors

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

The app's competitive narrative shifted from a critique of ad-monetization to a focus on the lack of assistive utility and long-term retention loops.

**Overall trend**: Declining
**Compared at**: 2026-05-13

### High-impact changes
- **[Shifted] Competitive Landscape Re-anchoring** (positioning) — The primary nemesis changed from Virtual Vision Test (clinical brand authority) to Color Blind Pal (assistive daily-use utility).
- **[Shifted] Monetization Strategy Assessment** (swot) — Monetization status shifted from an opportunity (introduce premium tier) to a terminal weakness (lack of revenue limits development capacity).

### Medium-impact changes
- **[Added] Android Visibility Gap** (swot) — New weakness identified: zero Android rating count indicates poor cross-platform visibility.
- **[Shifted] Strategic Retention Focus** (positioning) — PM action items shifted from reducing ad frequency to prioritizing real-time color correction features.

<!-- section:rivals -->
## Rivals Landscape {#rivals}

> Competitive positioning identified by AI analysis of app features, category, and market signals.

### Color Blindness Test Ishihara vs Color Blind Pal — Head to Head
- **[Color Blind Pal](https://marlvel.ai/intel-report/utilities/color-blind-pal)** by Vincent Fiorentini: With over 800 reviews and a long-standing presence since 2016, this app serves as the primary market benchmark for color vision deficiency tools.
  - **Key differences:**
    - Offers real-time color correction filters that actively assist users in identifying colors in their environment.
    - Provides a comprehensive suite of color blindness tests beyond the standard Ishihara plates for broader diagnostic utility.
    - Maintains a multi-year track record of user engagement, establishing it as the default choice for the category.
  - **Where Color Blindness Test Ishihara wins:**
    - ✅ Focuses on a simplified, singular Ishihara-based testing experience which may appeal to users seeking a quick, no-frills diagnosis.
    - ✅ Maintains a more modern update cadence compared to the rival's recent lack of feature releases.
  - **Where Color Blind Pal wins:**
    - ❌ Delivers high-utility assistive features like real-time color correction that transform the app from a test into a daily tool.
    - ❌ Leverages a massive historical user base to refine its testing accuracy and build significant brand trust.
  - **Verdict:** The target app must pivot from being a static testing tool to providing assistive utility to compete with the rival's daily-use feature set.

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

- **Latest (v1.1.0, 1 years ago):** Updated test questions and improved test results alongside general performance enhancements.
<!-- /section:whats-new -->

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

- No major feature releases recently.
- Maintains static diagnostic toolset.

> **Cadence:** 2 total versions · 0 majors in last 6 months · 387 days since last update · 287 days avg between updates

<!-- /section:momentum -->

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

Color Blindness Test Ishihara is an established medical app that is completely free.
With a 3/5 rating from 1 reviews, it shows polarized user reception.

<!-- speakable-start -->
> **Bottom Line:** The app functions as a static diagnostic tool, but it lacks the assistive utility required to compete with established rivals, so the PM must prioritize real-time color correction features to prevent total churn.
<!-- speakable-end -->

**Best for:** Individuals seeking personal color vision assessment and professionals requiring a screening tool for color blindness.

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

- [ ] [PIVOT] [HIGH IMPACT] Pivot to assistive utility by shipping real-time color correction because static tests lack retention → increase daily active usage — *Competitor analysis shows rivals with real-time filters dominate the category* _(trade-off: deprioritize Deprioritize further Ishihara plate additions — existing set is sufficient for diagnosis.)_
<!-- /section:pm-actions -->

<!-- section:feature-gaps -->
### Feature Gaps vs Competitors

- Real-time color correction filters (available in Color Blind Pal but absent here)
- Comprehensive suite of non-Ishihara tests (available in Color Blind Pal but absent here)
<!-- /section:feature-gaps -->

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

The color vision deficiency market is consolidating around assistive tools that provide daily value beyond simple diagnosis. This app remains exposed to churn because it offers no reason for users to return after the initial test.

- 🔴 The lack of feature updates relative to the nemesis's established utility suggests the app is in maintenance mode, which will lead to gradual user attrition.
<!-- /section:outlook -->

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

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

| Metric | Value |
| :--- | :--- |
| Overall Rating | 3/5 |
| Total Reviews | 1 |
| Confidence | Low |
| Pricing Model | Free |
| Platforms | iOS & Android |
| Key Features | 3 analyzed |
| Trend | Declining |
| Outlook | Stable |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **Color Blindness Test Ishihara** (this app) | 3/5 | N/A | Rina Katrina |
| [Color Blind Pal](https://marlvel.ai/intel-report/utilities/color-blind-pal) | 3.9/5 | Mixed | Vincent Fiorentini |
| [Beat Social Phobia with AJ](https://marlvel.ai/intel-report/medical/beat-social-phobia-with-aj) | 3.9/5 | Thrilled | Universal Relaxation Ltd |
| [Move On with AJ](https://marlvel.ai/intel-report/medical/move-on-with-aj) | 4.3/5 | Excited | Universal Relaxation Ltd |
| [NYC Employees PPO Plan](https://marlvel.ai/intel-report/medical/com-uhg-mobile-nyce) | 4.6/5 | N/A | United HealthCare Services, Inc. |
| [DeepScribe](https://marlvel.ai/intel-report/medical/deepscribe) | 4.0/5 | N/A | DeepScribe |

## Company Profile
- **Developer:** Rina Katrina
- **Website:** [https://genta-group.com](https://genta-group.com)
- **Social:** [Instagram](https://www.instagram.com/ancora_themes) · [Facebook](https://www.facebook.com/AncoraThemes) · [X/Twitter](https://twitter.com/themes_ancora)

## Data Sources & Links
- **App Store:** [View on Apple Store](https://apps.apple.com/us/app/color-blindness-test-ishihara/id1527379118?uo=4)
- **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=com.ishihara.colorblind&hl=en&gl=us)
- **Dev Site:** [Official Website](https://genta-group.com)
- **Sources:** Developer website content, About us / company information, App store metadata, User reviews.

## Related Intel Reports
- [*Color Blind Pal*](https://marlvel.ai/intel-report/utilities/color-blind-pal) (Vincent Fiorentini) — 3.9/5 Rating | Mixed Sentiment
- [*Beat Social Phobia with AJ*](https://marlvel.ai/intel-report/medical/beat-social-phobia-with-aj) (Universal Relaxation Ltd) — 3.9/5 Rating | Excellent Sentiment
- [*Move On with AJ*](https://marlvel.ai/intel-report/medical/move-on-with-aj) (Universal Relaxation Ltd) — 4.3/5 Rating | Positive Sentiment
- [*NYC Employees PPO Plan*](https://marlvel.ai/intel-report/medical/com-uhg-mobile-nyce) (United HealthCare Services, Inc.) — 4.6/5 Rating | N/A Sentiment
- [*DeepScribe*](https://marlvel.ai/intel-report/medical/deepscribe) (DeepScribe) — 4.0/5 Rating | N/A Sentiment
- [*Dario Health*](https://marlvel.ai/intel-report/medical/dario-health) (LabStyle Innovation Ltd) — 4.8/5 Rating | Negative Sentiment
- [*Access - by McGraw Hill*](https://marlvel.ai/intel-report/medical/access-by-mcgraw-hill) (McGraw-Hill) — 3.9/5 Rating | N/A Sentiment
- [*Meu SUS Digital*](https://marlvel.ai/intel-report/medical/meu-sus-digital) (Servicos e Informacoes do Brasil) — 3.7/5 Rating | N/A Sentiment
- [*CRNA Nurse Anesthesia Review*](https://marlvel.ai/intel-report/medical/crna-nurse-anesthesia-review) (Higher Learning Technologies) — 4.7/5 Rating | N/A Sentiment
- [*FHO+ Calc*](https://marlvel.ai/intel-report/medical/ca-fhocalc-app) (Manu Kaushik) — N/A 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:** 0.5/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 8
- **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:** 0 days since last refresh

---
© 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/intel-report/medical/color-blindness-test-ishihara)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.