---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "DeadLineTodo - DDL Management"
developer_entity: "Si Yi Lyu"
bundle_id: "andy.DeadLineTodo"
app_store_id: "6477158822"
category: "Productivity"
primary_platform: "ios"
primary_monetization: "Free"
offline_capable: false
market_region: "US"
platforms: "iOS"
app_last_updated: "2025-07-18"
report_date: "2026-10-04"
last_verified: "2026-10-04T00:00:00.000Z"
report_version: "3.1.10"
total_reviews: 2
overall_rating: 4.5
confidence: "low"
confidence_score: 0.05
data_age_days: 41
momentum_velocity: "zombie"
intelligence_version: 2
tags: ["productivity", "free", "mobile app", "app review", "app analysis", "individuals,", "specifically", "procrastinators,"]
canonical_url: "https://marlvel.ai/apps/deadlinetodo-ddl-management"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# DeadLineTodo - DDL Management Intelligence Report

## TL;DR {#tldr}

- **Category**: Productivity · Free
- **Signal**: Rating 4.5

> **TL;DR:** DeadLineTodo - DDL Management is a productivity app by Si Yi Lyu, rated 4.5/5 by 2 users, available on iOS.
>
> **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** DeadLineTodo - DDL Management is a productivity app by Si Yi Lyu.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 4.5/5 (2 reviews) |
| **Category** | Productivity |
| **Developer** | Si Yi Lyu |
| **Pricing** | Free |
| **Platforms** | iOS |
| **Confidence** | Low (0.05/1.0) |
| **Data Age** | 41d |

## Metadata & Market Performance
- **Publisher:** Si Yi Lyu
- **Category:** Productivity
- **Target Audience:** Individuals, specifically procrastinators, who require visual time-tracking tools to manage deadlines.
- **Platforms:** iOS
- **Version Reviewed:** 3.1.10
- **Report Date:** 2026-10-04
- **Signal Count:** 0 reviews analyzed
- **Confidence:** Low (0.05/1.0)
- **App Store ID (iOS):** 6477158822
- **Bundle ID:** andy.DeadLineTodo
- **Data Window:** Analysis based on signals collected up to 2026-10-04

<!-- section:executive-snapshot -->
## Executive Snapshot
**What it is:** DeadLineTodo is a task management app for iOS that uses visual progress blocks and heat maps to help users track deadlines.
**Why users hire it:** It removes the cognitive friction of manual time estimation by mapping task duration directly to visual block widths on the home screen.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Differentiator] Progress Block Tracking:** Visualizes task duration by adjusting the width of task blocks in the interface.
  * *User Intent:* Users seek enhanced value through premium features.
- **[Differentiator] Efficiency Statistics:** Aggregates performance data including heat maps and time spent.
- **[Standard] Task Widget:** Displays daily tasks on the home screen for quick access.
  * *User Intent:* Users are motivated by consistent progression and daily incentives.
<!-- /section:features -->

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

DeadLineTodo holds a 4.5-star rating on the App Store, though this is based on a limited sample of 2 ratings. The lack of updates for 443 days places it outside the active competitive set in the productivity category.
<!-- /section:market-position -->

## Monetization Strategy
- **Model:** Free
- **Tiers:** Free version with all listed features
- **Analysis:** DeadLineTodo is currently free with no visible subscription or IAP gates, limiting its long-term sustainability.

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

**Core Strengths:**
- Visual progress blocks provide immediate time-management feedback

**Growth Levers:**
- Introduce premium analytics tier to monetize power users


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

- **Latest (v3.1.10, 1 years ago):** Introduced a home screen widget for tracking task progress.
<!-- /section:whats-new -->

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

- No updates in 443 days.
- Last release introduced home screen widget.

> **Cadence:** 1 total versions · 1 majors in last 6 months · 443 days since last update

<!-- /section:momentum -->

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

DeadLineTodo - DDL Management is a productivity app that is completely free.
It holds a 4.5/5 rating from 2 reviews.

<!-- speakable-start -->
> **Bottom Line:** DeadLineTodo's visual tracking mechanism offers a unique hook, but the 443-day update gap prevents it from scaling. A pivot to a sustainable monetization model is required to justify further development investment.
<!-- speakable-end -->

**Best for:** Individuals, specifically procrastinators, who require visual time-tracking tools to manage deadlines.

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

- [ ] [PIVOT] Audit user retention data because the app has been silent for 443 days → determine if a pivot is viable
<!-- /section:pm-actions -->

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

The productivity market is consolidating around apps with frequent live-ops and cross-platform sync. DeadLineTodo remains in maintenance mode, which leaves it vulnerable to churn as users migrate to more actively supported alternatives.

- 🔴 The 443-day update gap indicates a lack of active development, which erodes user trust and long-term retention potential.
<!-- /section:outlook -->

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

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

| Metric | Value |
| :--- | :--- |
| Overall Rating | 4.5/5 |
| Total Reviews | 2 |
| Confidence | Low |
| Pricing Model | Free |
| Platforms | iOS |
| Key Features | 3 analyzed |
| Outlook | Stable |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **DeadLineTodo - DDL Management** (this app) | 4.5/5 | N/A | Si Yi Lyu |
| [HitWave](https://marlvel.ai/apps/ciendor-applications-hitwave) | 2.5/5 | Mixed | Ciendor Holdings Corp. LTD |
| [VPN 360: Fast & Secure Proxy](https://marlvel.ai/apps/co-infinitysoft-vpn360) | 4.5/5 | Mixed | Pango GmbH |
| [ChatGPT](https://marlvel.ai/apps/chatgpt) | 4.8/5 | n/a | OpenAI OpCo, LLC |
| [Clean Swell](https://marlvel.ai/apps/clean-swell) | 3.9/5 | n/a | Ocean Conservancy |
| [Data Tree Manager](https://marlvel.ai/apps/data-tree-manager) | N/A/5 | N/A | Vsevolod Migdisov |

## Company Profile
- **Developer:** Si Yi Lyu

## Data Sources & Links
- **App Store ID:** 6477158822
- **Sources:** App store metadata.

## Related Intel Reports
- [*HitWave*](https://marlvel.ai/apps/ciendor-applications-hitwave) (Ciendor Holdings Corp. LTD) · 2.5/5 Rating
- [*VPN 360: Fast & Secure Proxy*](https://marlvel.ai/apps/co-infinitysoft-vpn360) (Pango GmbH) · 4.5/5 Rating
- [*ChatGPT*](https://marlvel.ai/apps/chatgpt) (OpenAI OpCo, LLC) · 4.8/5 Rating
- [*Clean Swell*](https://marlvel.ai/apps/clean-swell) (Ocean Conservancy) · 3.9/5 Rating
- [*Data Tree Manager*](https://marlvel.ai/apps/data-tree-manager) (Vsevolod Migdisov) · N/A Rating
- [*DoughLab - Baking Recipe Lab*](https://marlvel.ai/apps/doughlab-baking-recipe-lab) (Jeong-soo Park) · N/A Rating
- [*Infomaniak Euria*](https://marlvel.ai/apps/infomaniak-euria) (Infomaniak Network SA) · 4.8/5 Rating
- [*Inuvika OVD Mobile Client*](https://marlvel.ai/apps/inuvika-ovd-mobile-client) (Inuvika) · 5.0/5 Rating | Excellent Sentiment
- [*Lumo AI by Proton*](https://marlvel.ai/apps/lumo-ai-by-proton) (Proton AG) · 3.9/5 Rating
- [*Paper: Sketch, Draw & Create*](https://marlvel.ai/apps/paper-sketch-draw-create) (Evernote Corporation) · 4.6/5 Rating

## Frequently Asked Questions {#faq}

### Is DeadLineTodo free to use?

Yes, DeadLineTodo is currently offered as a free app with no visible subscription or in-app purchase gates.

### Does DeadLineTodo support multi-device syncing?

Yes, DeadLineTodo includes iCloud multi-device sync to keep task data consistent across your Apple devices.

### Is DeadLineTodo still being updated?

DeadLineTodo has not received a major update in over 443 days, suggesting it is currently in maintenance mode.

## 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:** 0.05/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 0
- **Data Sources:** 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:** 41 days since last refresh

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