---
title: "Calendar app *DeepBlack — App Overview"
url: https://marlvel.ai/apps/calendar-app-deepblack
category: Productivity
developer: Bakerstreet Co., Ltd.
platforms: ios
rating: 4.5 (2 ratings)
pricing: free
report_level: overview
generated: 2026-05-08
last_verified: "2026-05-08T06:11:22.670Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** DeepBlack is a privacy-focused, offline-only calendar and task manager designed for users who prefer a simple, non-standard scheduling experience.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Productivity |
| Rating | 4.5 ★ (2) |
| Pricing | free |
| Platforms | iOS |
| Latest Version (iOS) | 3.3 |
| Developer | Bakerstreet Co., Ltd. |

<!-- SECTION: Summary -->
## What is Calendar app *DeepBlack?

DeepBlack is a productivity tool that combines calendar scheduling with a daily task list for casual note-taking. It allows users to organize appointments and tasks locally on their device without requiring account registration.

<!-- SECTION: Key Features -->
## Key Features

- **Task and Appointment Management**: Users can add or delete items directly from a daily task list with simple touch interactions.
- **Color-Coded Calendar**: The calendar interface allows for visual organization by applying color bars to specific event days.
- **Local Data Privacy**: All appointments and task lists are saved locally on the user's device, eliminating the need for account registration.
- **Flexible Scheduling**: The app supports custom schedules for users who do not follow standard Saturday and Sunday rest days.

<!-- SECTION: Target Audience -->
## Who is it for?

Individuals seeking a simple, private scheduling tool that supports non-traditional work weeks and customizable event categorization.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/calendar-app-deepblack/id1115009429?uo=4)
- [Full Intelligence Report](https://marlvel.ai/apps/calendar-app-deepblack)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/calendar-app-deepblack).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*