---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "iGanttChart: Gantt Chart App"
developer_entity: "YUKI TANAIKE"
bundle_id: "jp.tanaike.ganttchart"
app_store_id: "1665357828"
category: "Business"
primary_platform: "ios"
primary_monetization: "Freemium"
offline_capable: false
market_region: "US"
platforms: "iOS & Android"
app_last_updated: "2026-06-18"
report_date: "2026-08-06"
last_verified: "2026-08-06T00:00:00.000Z"
report_version: "2.7.23"
total_reviews: 138
overall_rating: 3.7
sentiment: "Mixed"
sentiment_score: 55
confidence: "high"
confidence_score: 0.7
top_praise_theme: "The simple and lightweight interface allows users to organize project timelines quickly while on the go"
top_complaint_theme: "Users report the inability to link task dependencies or sort by date hinders professional project planning"
review_sample_size: 27
total_review_count: 27
analyzed_review_count: 27
data_age_days: 21
momentum_velocity: "maintenance"
intelligence_version: 3
tags: ["business", "freemium", "mixed sentiment", "mobile app", "app review", "app analysis", "individuals", "small", "teams"]
canonical_url: "https://marlvel.ai/apps/iganttchart-gantt-chart-app"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# iGanttChart: Gantt Chart App Intelligence Report

## TL;DR {#tldr}

- **Category**: Business · Freemium
- **Signal**: Rating 3.68 · Sentiment Mixed
- **Recent focus**: Users report the inability to link task dependencies or sort by date hinders professional project planning (top complaint) · The simple and lightweight interface allows users to organize project timelines quickly while on the go (top praise)

> **TL;DR:** iGanttChart: Gantt Chart App is a business app by YUKI TANAIKE, rated 3.68/5 by 138 users, with Mixed user sentiment (55/100), available on iOS & Android.
>
> **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** iGanttChart: Gantt Chart App shows Mixed sentiment (3.68/5 from 138 reviews) - users praise the simple and lightweight interface allows users to organize project timelines quickly while on the go but report issues with users report the inability to link task dependencies or sort by date hinders professional project planning.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 3.68/5 (138 reviews) |
| **User Mood** | Mixed |
| **Category** | Business |
| **Developer** | YUKI TANAIKE |
| **Pricing** | Freemium |
| **Platforms** | iOS & Android |
| **Confidence** | High (0.7/1.0) |
| **Data Age** | 21d |

## Metadata & Market Performance
- **Publisher:** YUKI TANAIKE
- **Category:** Business
- **Target Audience:** Individuals and small teams needing simple, mobile-first project management and task tracking tools.
- **Platforms:** iOS & Android
- **Version Reviewed:** 2.7.24
- **Report Date:** 2026-08-06
- **Signal Count:** 27 reviews analyzed
- **Confidence:** High (0.7/1.0)
- **App Store ID (iOS):** 1665357828
- **Bundle ID:** jp.tanaike.ganttchart
- **Google Play ID:** jp.tanaike.ganttchart
- **Performance Trend:** Declining
- **Data Window:** Analysis based on signals collected up to 2026-08-06

<!-- section:executive-snapshot -->
## Executive Snapshot
**What it is:** iGanttChart is a mobile project management tool for creating Gantt charts on smartphones and tablets.
**Why users hire it:** Users hire this app for quick, low-stakes timeline visualization without the overhead of complex desktop software, so the value hinges on accessibility.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Standard] Gantt Chart Visualization:** Visual project timeline creation with task progress, color coding, and link support. Revenue link: Core utility loop drives daily active usage.
  * *User Intent:* Users are motivated by consistent progression and daily incentives.
- **[Standard] Google Drive Sync:** Multi-device data synchronization via Google Drive integration. Revenue link: Reduces friction for multi-device users, increasing stickiness.
  * *User Intent:* Users expect seamless access across multiple devices.
- **[Differentiator] Data Export and Import:** Export charts to Excel or text formats and import existing data for editing. Revenue link: Acts as a B2B hook for users needing to share data with non-app users.
  * *User Intent:* Users seek social connection and competitive engagement with peers.
- **[Differentiator] No-Registration Access:** Immediate app usage without account creation or sign-up requirements. Revenue link: Lowers barrier to entry, maximizing top-of-funnel acquisition.
<!-- /section:features -->

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

iGanttChart maintains a 4.0-star rating across 138 total ratings, but the lack of major updates in the last 49 days suggests a maintenance-mode posture. This stagnation limits its ability to compete with active project management tools that prioritize feature parity and transparent pricing.
<!-- /section:market-position -->

## Monetization Strategy
- **Model:** Freemium
- **Tiers:** Free version with all features
- **Analysis:** The app operates as a free tool with paywalled core functionality, which reviewers describe as deceptive.

<!-- section:sentiment -->
## 🟡 User Sentiment (High Confidence: 27 of 27 reviews analyzed) {#user-sentiment}
- **Overall Rating:** 3.68/5
- **Platform Split:** iOS 4.0/5 (22 ratings) | Android 3.6/5 (116 ratings)
- **Overall Sentiment:** Mixed

### Top Praises
- **The simple and lightweight interface allows users to organize project timelines quickly while on the go**
- **Visual project tracking provides a clear sequence of tasks that helps users manage their daily priorities**

### Top Complaints (Impact Areas)

- **Users report the inability to link task dependencies or sort by date hinders professional project planning**

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

**Core Strengths:**
- No-registration access maximizes top-of-funnel acquisition
- Lightweight interface enables rapid mobile timeline updates

**Growth Levers:**
- Implementing PDF export addresses the #1 user request
- Adding native cloud-save reduces data-loss complaints


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

The app has transitioned into a maintenance-mode posture with no major updates in 49 days, leading to a more critical assessment of its monetization and long-term competitive viability.

**Overall trend**: Declining
**Compared at**: 2026-08-06

### High-impact changes
- **[Shifted] Maintenance-mode posture** (positioning)
- **[Shifted] Pricing model reclassification** (pricing)

### Medium-impact changes
- **[Added] New SWOT threats and weaknesses** (swot)
- **[Shifted] PM Action Item pivot** (positioning)

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

- **Latest (v2.7.23, 2 months ago):** General bug fix.
- **Last Major (v2.7.24, 1 months ago):** Enabled multi-language support for store listings.
<!-- /section:whats-new -->

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

- Ships minor bug fixes only.
- No major feature updates recently.

> **Cadence:** 2 total versions · 0 majors in last 6 months · 49 days since last update · 26 days avg between updates

<!-- /section:momentum -->

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

iGanttChart: Gantt Chart App is a business app that is free with in-app purchases.
With a 3.68/5 rating from 138 reviews, it shows mixed user reception.

<!-- speakable-start -->
> **Bottom Line:** Users report: iGanttChart secures casual users through low-friction entry, but the deceptive paywall strategy erodes trust and limits long-term retention, so the PM should prioritize transparent pricing and core feature parity to stabilize the user base.
<!-- speakable-end -->

**Best for:** Individuals and small teams needing simple, mobile-first project management and task tracking tools.

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

- [ ] [INVEST] Ship PDF export because it is the top-requested feature → increase document utility and user satisfaction
<!-- /section:pm-actions -->

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

The mobile project management market is consolidating around tools that offer seamless cross-device sync and transparent pricing, leaving iGanttChart exposed. Without a shift toward feature parity and clear monetization, the app will continue to bleed professional users to more active, transparent competitors.

- 🔴 Maintenance-mode release cadence (no major updates in 49 days) signals a lack of investment, which erodes user trust in the app's long-term viability.
- 🔴 Users report: Deceptive monetization complaints in reviews create a churn risk that outweighs the benefits of the no-registration entry model.
<!-- /section:outlook -->

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

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

| Metric | Value |
| :--- | :--- |
| Overall Rating | 3.68/5 |
| Total Reviews | 138 |
| Sentiment | Mixed (55/100) |
| Confidence | High |
| Pricing Model | Freemium |
| Platforms | iOS & Android |
| Key Features | 4 analyzed |
| Trend | Declining |
| Outlook | Mixed |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **iGanttChart: Gantt Chart App** (this app) | 3.68/5 | Mixed | YUKI TANAIKE |
| [Groupon Merchant](https://marlvel.ai/apps/groupon-merchant) | 3.0/5 | n/a | Groupon, Inc. |
| [긱톡 - 재택부업, 프리랜서, 단기알바 정보 플랫폼](https://marlvel.ai/apps/com-gigtalk-gigtalk) | 4.5/5 | N/A | Nextstep Inc. |
| [두란노](https://marlvel.ai/apps/app--971) | N/A/5 | N/A | Duranno |
| [쿠펀치](https://marlvel.ai/apps/coupang-app-coupunch) | 1.0/5 | N/A | Coupang Corp. |
| [아지트 - 함께 소통하는 업무용 커뮤니티](https://marlvel.ai/apps/app--797) | 3.0/5 | N/A | Kakao Corp. |

## Company Profile
- **Developer:** YUKI TANAIKE
- **Website:** [https://tanaike.jp](https://tanaike.jp)
- **Social:** [Facebook](https://www.facebook.com/yuki.tanaike)

## Data Sources & Links
- **App Store:** [View on Apple Store](https://apps.apple.com/us/app/iganttchart-gantt-chart-app/id1665357828?uo=4)
- **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=jp.tanaike.ganttchart&hl=en&gl=us)
- **Dev Site:** [Official Website](https://tanaike.jp)
- **Sources:** Developer website content, About us / company information, App store metadata, User reviews.

## Related Intel Reports
- [*Groupon Merchant*](https://marlvel.ai/apps/groupon-merchant) (Groupon, Inc.) · 3.0/5 Rating
- [*긱톡 - 재택부업, 프리랜서, 단기알바 정보 플랫폼*](https://marlvel.ai/apps/com-gigtalk-gigtalk) (Nextstep Inc.) · 4.5/5 Rating
- [*두란노*](https://marlvel.ai/apps/app--971) (Duranno) · N/A Rating
- [*쿠펀치*](https://marlvel.ai/apps/coupang-app-coupunch) (Coupang Corp.) · 1.0/5 Rating
- [*아지트 - 함께 소통하는 업무용 커뮤니티*](https://marlvel.ai/apps/app--797) (Kakao Corp.) · 3.0/5 Rating
- [*シフオプ*](https://marlvel.ai/apps/shift-management-service-to-support-optimal-placem) (Recruit Co.,Ltd.) · N/A Rating
- [*아임히어 - 모바일 출결 관리 앱*](https://marlvel.ai/apps/com-imhere-client-student) (LFin) · 2.9/5 Rating
- [*카매니저 - 중고차 딜러전용 전국 매물공유 플랫폼*](https://marlvel.ai/apps/kr-co-autocafe-carmanager) (atonmobility appmaster) · 3.0/5 Rating
- [*금호고속 셔틀*](https://marlvel.ai/apps/kr-co-kumhobuslines-shuttle-route-passengernew) (kumhoexpress) · 2.1/5 Rating
- [*쿠팡이츠 배달 파트너*](https://marlvel.ai/apps/coupang-eats-delivery) (Coupang Corp.) · 2.6/5 Rating

## 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:** 0.7/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 27
- **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:** 21 days since last refresh

---
© 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/iganttchart-gantt-chart-app)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.