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Sleep Diary App

Sleep Diary App

By Alexander Ivanov

Sleep Diary App is a manual sleep-tracking utility for iOS that integrates with Apple Health to record sleep duration.

The App DNA

What makes this app unique?

The app removes the requirement for wearable hardware, allowing users to log sleep patterns manually through a simple interface.

For Health-conscious individuals using Apple devices who want to track sleep duration without purchasing dedicated sleep-tracking hardware.

What does it look like?

Key features

Apple Health Integrationstandard

Synchronizes sleep duration logs with the system-level Health app for centralized data tracking.

Manual Sleep Loggingbasic

Provides a manual interface to record sleep duration without requiring external wearable hardware.

Atmospheric Pressure Monitoringedge

Tracks changes in barometric pressure during sleep cycles for iPhone 6 users.

How much does it cost?

freeFree

The app operates as a free utility with no visible subscription or in-app purchase gates.

Velocity

Dormant developmentopaqueShow more...

Sleep Diary App has been inactive for 2,320 days, indicating a complete cessation of development. No new features, bug fixes, or updates have been deployed in over six years. The project shows no signs of active maintenance or support.

See all version history

Who built it?

Alexander Ivanov

3 apps tracked · Health & Fitness

Bescored - football statsBescored - football statsUseless Streak: Tap ChallengeUseless Streak: Tap Challenge
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User Sentiment

What do users think recently?

The recent review mood reads mixed. Users appreciate simple and elegant interface design allows users to track sleep duration without complex setup steps and integration with health services provides users with detailed insights into sleep patterns and heart rate.

How are ratings & reviews evolving?

App Store
3.54 · 24

What users say, by theme

What Users Love
  • Simple and elegant interface design allows users to track sleep duration without complex setup steps
  • Integration with health services provides users with detailed insights into sleep patterns and heart rate
  • Manual tracking functionality provides a reliable alternative for users who prefer not to wear watches
What Frustrates Users
  • Users report: Frequent application crashes and recording failures prevent users from capturing accurate sleep data overnight
+ 2 more themes
What Users Want 1 request inside

31 of 31 recent reviews analyzed · high confidence · Mixed overall

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Unlock 2 more frustration themes and 1 user request, each backed by review evidence.

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Competition

Competitive landscape for Sleep Diary App

How's the Health & Fitness market?

Sleep Diary App occupies a legacy utility position in the Health & Fitness category, maintaining a 3.5-star rating across 24 reviews. The absence of updates for over 2,300 days signals a maintenance-mode posture that leaves the app vulnerable to modern, automated competitors.

Read the market outlook

The rivals identified

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The Analyst's Read

Key takeaways for Sleep Diary App

Where is it heading?

The health-tracking market has consolidated around automated, sensor-driven solutions, leaving manual-entry utilities like Sleep Diary App increasingly obsolete. Without a shift to active development or a pivot to a niche manual-tracking audience, the app will continue to lose relevance as its technical debt compounds.

  • The six-year development gap indicates the app is in maintenance mode, which prevents it from addressing modern user expectations for automated tracking.
  • Persistent crash reports and recording inaccuracies in the latest version erode user trust, leading to a declining sentiment trend.

The SWOT

Core Strengths
  • Manual logging interface provides a low-friction entry point for users avoiding wearable hardware
Critical Frictions 2 weaknesses inside
Growth Levers
  • Developing a home screen widget would address the top-requested feature for nightly convenience
Market Threats 1 threat identified

Next best moves

1 Maintain

Audit crash logs and ship stability patches because frequent crashes are the top complaint → stabilize the core tracking habit

The counter-intuitive read

The app's lack of automation is its primary retention risk…

Read the full take

Since the last report: The app remains in a state of total development inactivity, with no material changes to features, pricing, or user sentiment observed between reports. The core product experience remains defined by the same technical debt and maintenance-mode status identified previously.

Bottom line

Sleep Diary App serves as a basic manual utility, but the lack of development since 2020 leaves it unable to compete with automated alternatives. The PM should prioritize stability fixes to address the crash-prone user experience, which currently erodes the core tracking habit.

Unlock 2 critical frictions, 1 market threat and the analyst’s take.

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Sources

  1. [1] App Store, source

Report last updated

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Sleep Diary App, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Sleep Diary App Intelligence Report.” Updated Sep 1, 2026. https://marlvel.ai/apps/sleep-diary-app

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