Report updated Apr 19, 2026

Overview · Full Intel report in progress

DayCalc - Note Calculator is an established utilities app that is completely free. With a 4.7/5 rating from 124 reviews, it shows polarized user reception.

What is DayCalc - Note Calculator?

DayCalc is a multi-functional utility app for iOS and watchOS that combines a scientific calculator with a customizable unit converter. It distinguishes itself by allowing users to annotate calculation history and create custom unit data categories.

Current Momentum

v13.2 · 1mo ago

Active

Last updated 37d ago. 5 versions tracked.

AI-powered deep analysis surfacing high-signal insights. Still in beta, accuracy improves daily. For informational purposes only.

Competition

Rivals identification in progress

7-Day Rank Pulse 🇺🇸

Utilities

No ranking data

ProductivityGrossing

Rating Pulse 🇺🇸

What makes this app unique?

What Does It Look Like?

How Is The App's Momentum Right Now?

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What Are The Key Features?

Calculation History & NotesStandard

Users can add notes to calculation history, share results, and lock entries to prevent accidental modification.

Scientific & Basic ModesStandard

Offers a dual-mode interface with over 30 scientific operations and support for portrait, landscape, and split-screen layouts.

Customizable Unit ConverterStandard

Includes over 600 units across 20 categories with the ability for users to input their own custom unit data.

Cross-Platform IntegrationStandard

Provides native support for iPhone, iPad, and Apple Watch, including integration with iOS Spotlight search.

How much does it cost?

Free

Who Built It?

良峰 侯

(640.3K)

Equipping mobile users with high-utility calculation and finance tools designed for daily efficiency and cross-device accessibility.

Portfolio

13

Apps

Free 11Paid 1
Utilities42%
Finance33%
Business8%

Who is 良峰 侯?

Operating under the 'Room HC' brand, this publisher maintains an established presence in the high-frequency utility segment by focusing on essential daily tools like calculators and currency converters. Their strategic advantage is built on a decade-long market tenure and an exceptionally high update cadence that ensures real-time data accuracy and hardware compatibility. The portfolio demonstrates a successful long-term maintenance strategy, transitioning legacy utility apps into modern, cross-platform tools with Apple Watch support.

Who is 良峰 侯 for?

  • General mobile users
  • International travelers requiring reliable
  • Offline-capable calculation
  • Conversion tools
Intense

Portfolio momentum

The publisher released 51 updates across 18 active apps in the last 6 months, indicating a highly aggressive maintenance and feature-rollout schedule.

Last release · 3d agoActive apps · 18Abandoned · 1

Analysis in progress, available soon

What do users think recently?

Analysis in progress, available soon

Analysis in progress, available soon

What is the competitive landscape for DayCalc - Note Calculator?

How's The Utilities Market?

Market outlook for this category

Available very soon

Strategic analysis coming soon

SWOT, key takeaways & outlook

The outtake for DayCalc - Note Calculator

Key Takeaways

DayCalc provides a comprehensive, highly customizable calculation and conversion suite that emphasizes user-defined data and history management.

Where Is It Heading?

Trend analysis

Available very soon

Disclosure

Independent intel to help builders create better apps.

AI-powered analysis with editorial review, built from publicly available sources. See methodology.

Marlvel.ai is not affiliated with, endorsed by, or sponsored by DayCalc - Note Calculator, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

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Cite this report

Marlvel.ai. “DayCalc - Note Calculator Intelligence Report.” Updated Apr 19, 2026. https://marlvel.ai/intel-report/utilities/daycalc-note-calculator

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