---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "Attic Calendar"
developer_entity: "Thomas Lee"
bundle_id: "com.atticcalendar.AtticCalendar"
app_store_id: "6504639335"
google_play_id: "com.atticcalendar"
category: "Lifestyle"
primary_platform: "ios"
primary_monetization: "Freemium"
offline_capable: false
market_region: "US"
platforms: "iOS & Android"
app_last_updated: "2026-09-18"
report_date: "2026-09-22"
last_verified: "2026-09-22T00:00:00.000Z"
report_version: "1.14.2"
total_reviews: 6
overall_rating: 5
confidence: "low"
confidence_score: 0.3
data_age_days: 32
momentum_velocity: "maintenance"
intelligence_version: 2
tags: ["lifestyle", "freemium", "mobile app", "app review", "app analysis", "individuals", "interested", "hellenic"]
canonical_url: "https://marlvel.ai/apps/attic-calendar"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# Attic Calendar Intelligence Report

## TL;DR {#tldr}

- **Category**: Lifestyle · Freemium
- **Signal**: Rating 5

> **TL;DR:** Attic Calendar is a lifestyle app by Thomas Lee, rated 5/5 by 6 users, available on iOS & Android.
>
> **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** Attic Calendar is a lifestyle app by Thomas Lee.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 5/5 (6 reviews) |
| **Category** | Lifestyle |
| **Developer** | Thomas Lee |
| **Pricing** | Freemium |
| **Platforms** | iOS & Android |
| **Confidence** | Low (0.3/1.0) |
| **Data Age** | 32d |

## Metadata & Market Performance
- **Publisher:** Thomas Lee
- **Category:** Lifestyle
- **Target Audience:** Individuals interested in Hellenic polytheism, ancient Greek history, and practitioners of the Attic calendar.
- **Platforms:** iOS & Android
- **Version Reviewed:** 1.14.2
- **Report Date:** 2026-09-22
- **Signal Count:** 0 reviews analyzed
- **Confidence:** Low (0.3/1.0)
- **App Store ID (iOS):** 6504639335
- **Bundle ID:** com.atticcalendar.AtticCalendar
- **Google Play ID:** com.atticcalendar
- **Data Window:** Analysis based on signals collected up to 2026-09-22

<!-- section:executive-snapshot -->
## Executive Snapshot
**What it is:** Attic Calendar is a specialized utility for tracking ancient Athenian dates and festivals on iOS and Android.
**Why users hire it:** The app removes the manual friction of calculating sunset-based day transitions and lunar-month starts for Hellenic practitioners.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Differentiator] Attic Calendar Calculation:** Calculates dates based on ancient Athenian rules, including Olympiad cycles and sunset-based day transitions.
- **[Differentiator] Hellenion Festival Integration:** Displays ancient Greek festivals and related events as recorded by Hellenion.
- **[Standard] Home and Lock Screen Widgets:** Provides at-a-glance access to current dates and festival information.
  * *User Intent:* Users seek enhanced value through premium features.
<!-- /section:features -->

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

Attic Calendar holds a unique position as a niche utility, with 6 ratings on iOS and a recent Android launch. The lack of direct competitors in the Hellenic calendar space allows the app to serve as the primary tool for its target audience.
<!-- /section:market-position -->

## Monetization Strategy
- **Model:** Freemium
- **Tiers:** Free on iOS, Ad-supported on Android
- **Analysis:** The app uses an ad-supported model on Android to monetize the free utility while maintaining a free-to-use status on iOS.

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

**Core Strengths:**
- Rule-based calculation engine automates complex lunar scheduling
- Widget integration increases session frequency without app launches
- Niche content curation builds community authority

**Growth Levers:**
- Educational partnerships could expand the user base
- Community-driven event submissions could deepen festival data


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

- **Latest (v1.14.2, 4 months ago):** Updated URLs for terms of service and privacy policy.
<!-- /section:whats-new -->

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

- Ships minor maintenance updates quarterly.
- Last major update four months ago.

> **Cadence:** 2 total versions · 0 majors in last 6 months · 3 days since last update · 120 days avg between updates

<!-- /section:momentum -->

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

Attic Calendar is a lifestyle app that is free with in-app purchases.
It holds a 5/5 rating from 6 reviews.

<!-- speakable-start -->
> **Bottom Line:** Attic Calendar maintains its position by serving a specific, underserved community with high-utility, rule-based calculations. Defending this position requires ensuring the festival data remains the most accurate source for Hellenic practitioners, as the niche nature of the app limits broader growth.
<!-- speakable-end -->

**Best for:** Individuals interested in Hellenic polytheism, ancient Greek history, and practitioners of the Attic calendar.

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

- [ ] [MAINTAIN] Audit festival data accuracy because user trust is the primary retention lever → maintain authority
<!-- /section:pm-actions -->

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

The market for niche historical calendars remains stable and underserved, positioning Attic Calendar as the default tool for its target audience. Continued stability in the festival database will sustain the app's authority, though the lack of feature expansion limits its ability to capture broader historical-interest segments.

- ⚪ The maintenance-only release cadence (one update every 4 months) indicates the app is a stable utility rather than a growth-focused product.
<!-- /section:outlook -->

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

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

| Metric | Value |
| :--- | :--- |
| Overall Rating | 5/5 |
| Total Reviews | 6 |
| Confidence | Low |
| Pricing Model | Freemium |
| Platforms | iOS & Android |
| Key Features | 3 analyzed |
| Outlook | Stable |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **Attic Calendar** (this app) | 5/5 | N/A | Thomas Lee |
| [Amora: A Hint of Your Soulmate](https://marlvel.ai/apps/amora-a-hint-of-your-soulmate) | 4.6/5 | N/A | Lit Apps LLC (Mobile) |
| [Find My Location: Tracker](https://marlvel.ai/apps/com-friendslocator) | 4.2/5 | n/a | DIGITS LTD |
| [Journey - Diary, Journal](https://marlvel.ai/apps/com-journey-ios-app) | 4.6/5 | Excited | Two App Studio Pte. Ltd. |
| [Spirit Talker ®](https://marlvel.ai/apps/spirit-talker) | 2.8/5 | n/a | Spotted Ghosts |
| [마주](https://marlvel.ai/apps/an-offline-network-where-you-meet-through-qr-codes) | N/A/5 | N/A | lvher |

## Company Profile
- **Developer:** Thomas Lee
- **Website:** [https://www.atticcalendar.com](https://www.atticcalendar.com)

## Data Sources & Links
- **App Store ID:** 6504639335
- **Google Play ID:** com.atticcalendar
- **Dev Site:** [Official Website](https://www.atticcalendar.com)
- **Sources:** Developer website content, About us / company information, App store metadata.

## Related Intel Reports
- [*Amora: A Hint of Your Soulmate*](https://marlvel.ai/apps/amora-a-hint-of-your-soulmate) (Lit Apps LLC (Mobile)) · 4.6/5 Rating
- [*Find My Location: Tracker*](https://marlvel.ai/apps/com-friendslocator) (DIGITS LTD) · 4.2/5 Rating
- [*Journey - Diary, Journal*](https://marlvel.ai/apps/com-journey-ios-app) (Two App Studio Pte. Ltd.) · 4.6/5 Rating | Positive Sentiment
- [*Spirit Talker ®*](https://marlvel.ai/apps/spirit-talker) (Spotted Ghosts) · 2.8/5 Rating
- [*마주*](https://marlvel.ai/apps/an-offline-network-where-you-meet-through-qr-codes) (lvher) · N/A Rating
- [*모앗*](https://marlvel.ai/apps/moat-moatapp) (JUNSEOK LEE) · N/A Rating
- [*야기*](https://marlvel.ai/apps/tistory-88yhtserof-yagi) (Yunhwi Lim) · N/A Rating
- [*책력*](https://marlvel.ai/apps/ryubi-chaengnyeok) (jeongrim oh) · N/A Rating
- [*케챱*](https://marlvel.ai/apps/o2a-ketchup) (EUNHYE LEE) · N/A Rating
- [*풋셀*](https://marlvel.ai/apps/app--635) (Pic&Go) · N/A Rating

## Frequently Asked Questions {#faq}

### Is Attic Calendar accurate for historical research?

The app uses specific rule-based calculations for the Attic calendar, but it does not account for historical variations in intercalated months, making it better suited for modern religious practice than academic research.

### Does Attic Calendar work offline?

The app calculates dates based on internal rules, allowing it to function without a constant internet connection for standard calendar tracking.

### Are there free alternatives to Attic Calendar?

There are no direct competitors offering the same combination of Hellenion-recorded festivals and custom Attic calendar calculations, making Attic Calendar a unique utility in its category.

## 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:** 0.3/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 0
- **Data Sources:** 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:** 32 days since last refresh

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