---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "Kyoku Flashcards"
developer_entity: "David Cordero"
bundle_id: "me.dcordero.kyoku"
app_store_id: "1484406208"
category: "Education"
primary_platform: "ios"
primary_monetization: "Paid"
offline_capable: false
market_region: "US"
platforms: "iOS"
app_last_updated: "2023-02-19"
report_date: "2026-05-11"
report_version: "2.6.2"
total_reviews: 105
overall_rating: 4.08
confidence: "low"
confidence_score: 0.25
data_age_days: 51
momentum_velocity: "zombie"
intelligence_version: 2
tags: ["education", "paid", "mobile app", "app review", "app analysis", "students", "lifelong", "learners"]
canonical_url: "https://marlvel.ai/intel-report/education/me-dcordero-kyoku"
license: "CC-BY-NC 4.0"
content_version: "v2"
last_verified: "2026-05-11T07:12:52.466Z"
---

# Kyoku Flashcards App Audit

## TL;DR {#tldr}

- **Category**: Education · Paid
- **Signal**: Rating 4.08

> **TL;DR:** Kyoku Flashcards is a education app by David Cordero, rated 4.08/5 by 105 users, available on iOS.
>
> **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** Kyoku Flashcards is a education app by David Cordero.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 4.08/5 (105 reviews) |
| **Category** | Education |
| **Developer** | David Cordero |
| **Pricing** | Paid |
| **Platforms** | iOS |
| **Confidence** | Low (0.25/1.0) |
| **Data Age** | 0d |

## Metadata & Market Performance
- **Publisher:** David Cordero
- **Category:** Education
- **Target Audience:** Students and lifelong learners who prefer handwriting or drawing their study materials on iPad.
- **Platforms:** iOS
- **Version Audited:** 2.6.2
- **Audit Date:** 2026-05-11
- **Signal Count:** 5 reviews analyzed
- **Confidence:** Low (0.25/1.0)
- **App Store ID (iOS):** 1484406208
- **Bundle ID:** me.dcordero.kyoku
- **Data Window:** Analysis based on signals collected up to 2026-05-11

<!-- section:executive-snapshot -->
## Executive Snapshot
Kyoku Flashcards is an education app designed for Apple Pencil users to create, organize, and study digital flashcards. It utilizes the Leitner System for spaced repetition and offers customizable templates to replicate the experience of physical paper cards.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Standard] Handwriting Support:** Allows users to create flashcards by writing or drawing directly on the front and back sides using an Apple Pencil.
- **[Standard] Spaced Repetition:** Implements the Leitner System to optimize study sessions and improve long-term concept retention.
  * *User Intent:* Users seek enhanced value through premium features.
- **[Standard] Customizable Templates:** Provides a variety of visual layouts including dotted, ruled, squared, music, and blank styles.
  * *User Intent:* Users value self-expression and personalized experiences.
- **[Standard] Export and Backup:** Enables users to secure their data or share decks with others by exporting them as files.
  * *User Intent:* Users seek social connection and competitive engagement with peers.
<!-- /section:features -->

## Monetization Strategy
- **Model:** Paid
- **Price:** iOS: $3.99

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

Last updated 1176d ago. 5 versions tracked.

> **Cadence:** 5 total versions · 0 majors in last 6 months · 1176 days since last update

<!-- /section:momentum -->

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

Kyoku Flashcards is an established education app that is a paid app.
With a 4.08/5 rating from 105 reviews, it shows polarized user reception.

<!-- speakable-start -->
> **Bottom Line:** While highly regarded for its handwriting-first approach, the app currently lacks a text-input tool and search functionality, which are common user pain points.
<!-- speakable-end -->

**Best for:** Students and lifelong learners who prefer handwriting or drawing their study materials on iPad.

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

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

| Metric | Value |
| :--- | :--- |
| Overall Rating | 4.08/5 |
| Total Reviews | 105 |
| Confidence | Low |
| Pricing Model | Paid |
| Platforms | iOS |
| Key Features | 4 analyzed |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **Kyoku Flashcards** (this app) | 4.08/5 | N/A | David Cordero |
| [Flashcards Deluxe](https://marlvel.ai/intel-report/education/flashcards-deluxe) | 4.5/5 | Thrilled | OrangeOrApple.com |
| [AlgoApp - Flashcards](https://marlvel.ai/intel-report/education/algoapp-flashcards) | 4.6/5 | Mixed | AlgoApp Inc |
| [Flash Cards Flashcards Maker](https://marlvel.ai/intel-report/education/flash-cards-flashcards-maker) | 4.0/5 | Mixed | Infinite Wave Media, LLC |
| [Elevate - Brain Training Games](https://marlvel.ai/intel-report/education/elevate-brain-training-games) | 4.7/5 | Mixed | The Mind Company |
| [Peak - Brain Training](https://marlvel.ai/intel-report/education/peak-brain-training) | 4.7/5 | Mixed | Synaptic Labs |

## Company Profile
- **Developer:** David Cordero
- **Website:** [https://kyoku.app](https://kyoku.app)

## Data Sources & Links
- **App Store:** [View on Apple Store](https://apps.apple.com/us/app/kyoku-flashcards/id1484406208?uo=2)
- **Dev Site:** [Official Website](https://kyoku.app)
- **Sources:** App store metadata, User reviews.

## Related Intel Reports
- [*Flashcards Deluxe*](https://marlvel.ai/intel-report/education/flashcards-deluxe) (OrangeOrApple.com) — 4.5/5 Rating | Excellent Sentiment
- [*AlgoApp - Flashcards*](https://marlvel.ai/intel-report/education/algoapp-flashcards) (AlgoApp Inc) — 4.6/5 Rating | Mixed 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
- [*Elevate - Brain Training Games*](https://marlvel.ai/intel-report/education/elevate-brain-training-games) (The Mind Company) — 4.7/5 Rating | Mixed Sentiment
- [*Peak - Brain Training*](https://marlvel.ai/intel-report/education/peak-brain-training) (Synaptic Labs) — 4.7/5 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
- [*Cornell CG*](https://marlvel.ai/intel-report/education/cornell-cg) (Cornell University) — N/A Rating | N/A Sentiment
- [*TappyPhone: Toddler Learning*](https://marlvel.ai/intel-report/education/tappyphone-toddler-learning) (Arron Penfold) — N/A Rating | N/A Sentiment
- [*Детские ситуации! LITE!*](https://marlvel.ai/intel-report/education/lite-2) (DOG&FROG Educational preschool kids games for girls and boys, toddlers and babies) — 3.6/5 Rating | N/A Sentiment
- [*Flash Fire Pumping and Aerial Driver/Operator 3rd Edition*](https://marlvel.ai/intel-report/education/com-flashfire-pumpaerial3) (Code 3 Apps) — 2.2/5 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:** 0.25/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 5
- **Data Sources:** user reviews, 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/me-dcordero-kyoku)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.