Report updated Apr 18, 2026
Calc4Key
For mobile users who frequently perform calculations while working in other applications.
Overview · Full Intel report in progress
Calc4Key is an established utilities app that is a paid app. With a 4.4/5 rating from 936 reviews, it shows polarized user reception.
What is Calc4Key?
Current Momentum
v1.0
No release notes available.
Competition
Rivals identification in progress
7-Day Rank Pulse 🇺🇸
UtilitiesNo ranking data
Rating Pulse 🇺🇸
What makes this app unique?
What Does It Look Like?
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What Are The Key Features?
Provides a functional calculator interface directly within the system keyboard.
Allows users to perform calculations without leaving their current app or switching contexts.
Utilizes the standard iOS keyboard switching mechanism via the globe icon for seamless access.
How much does it cost?
Who Built It?
Khang Le
Providing utility-focused keyboard extensions and casual arcade games for mobile users. Streamlining daily tasks through system-integrated tools.
Portfolio
13
Apps
What other apps does Khang Le make?
Explore the full Khang Le report
Portfolio breakdown, audience, momentum, and every app published by Khang Le.
Analysis in progress, available soon
What do users think recently?
Analysis in progress, available soon
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
Analysis in progress, available soon
What is the competitive landscape for Calc4Key?
How's The Utilities Market?
How does it evolve in the Utilities market?
Rank progression
9 active rankings tracked — 30-day window
Strategic analysis coming soon
SWOT, key takeaways & outlook
The outtake for Calc4Key
Key Takeaways
Calc4Key offers a productivity-focused solution for performing calculations in-place, though it requires specific system-level keyboard configuration to function.
Where Is It Heading?
Trend analysis
Available very soon