Time : Calculator++ is a productivity utility for iOS and Android that performs arithmetic on time durations.
The App DNA
What makes this app unique?
Users need to calculate irregular work hours and travel times without the manual conversion errors inherent in standard decimal-based calculators.
For Professionals and individuals tracking work hours, travel time, or daily errands who require specialized time-based arithmetic.
What does it look like?
Key features
Arithmetic operations for hours and minutes with automatic colon insertion.
User-defined buttons for one-touch addition of frequently used time intervals.
Dedicated button for cross-midnight calculations.
How much does it cost?
Ad-supported model with no IAP or subscription gates, monetizing 500,000+ Android installs via ad inventory.
Velocity
Maintenance developmentopaqueperformanceShow more...
The app is currently in a maintenance phase, with the latest release occurring 113 days ago. Development activity is limited to generic maintenance and stability improvements, with no evidence of new features or live operations. The release cadence is infrequent, averaging less than one update every three months. The publisher provides no specific details regarding the nature of these updates, relying on opaque release notes.
Who built it?
Yutaka Kenjo
5 apps tracked · Productivity
Calculator+
Time calculator+
Time : Calculator++P
Calculator++PUser Sentiment
What do users think recently?
Fresh user feedback skews excited. Users appreciate time calculation convenience allows users to avoid manual arithmetic when managing fluctuating work schedules and simple and intuitive interface design makes time math accessible for users across various professional roles, but report privacy settings fail to persist user choices, leading to concerns about data handling and vendor tracking.
How are ratings & reviews evolving?
What users say, by theme
- Time calculation convenience allows users to avoid manual arithmetic when managing fluctuating work schedules
- Simple and intuitive interface design makes time math accessible for users across various professional roles
- Versatile support for both twelve and twenty-four hour time formats accommodates diverse scheduling needs
- Privacy settings fail to persist user choices, leading to concerns about data handling and vendor tracking
50 of 50 recent reviews analyzed · high confidence · Excited overall
Read the full review analysisUnlock 1 more frustration theme and 1 user request, each backed by review evidence.
Access the full report for freeCompetition
Competitive landscape for Time : Calculator++
How's the Productivity market?
Time : Calculator++ maintains a 4.6-star rating across 1,853 total ratings, signaling high satisfaction with its core utility. The lack of updates for 113 days suggests a mature product lifecycle focused on ad-revenue maintenance rather than market-share expansion.
The rivals identified
The Analyst's Read
Key takeaways for Time : Calculator++
Where is it heading?
Time : Calculator++ remains a stable utility for time-tracking, but the lack of feature expansion leaves it vulnerable to rivals that offer more flexible time-format displays. The PM should prioritize stability and privacy-setting fixes to maintain the current user base, as the app is not currently positioned for aggressive growth.
- Privacy settings failing to persist after saving creates a recurring trust barrier that limits potential conversion to paid-ad engagement.
- The 113-day update gap confirms a maintenance-only lifecycle, which is sufficient for a static utility but prevents competitive differentiation.
The SWOT
- Preset keys create functional switching costs
- 12/24-hour display toggle captures broader audience
Next best moves
Fix privacy-setting persistence because users report settings reset after saving → increase user trust
The counter-intuitive read
The app's maintenance-mode status is a feature, not a bug…
Read the full takeBottom line
Fixing the privacy-setting persistence would address the primary friction point driving user hesitation, securing the app's position as a reliable utility for its core professional audience.
Unlock 2 critical frictions, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Is Time : Calculator++ safe to use for work tracking?
Does Time : Calculator++ support 12-hour AM/PM formats?
What is the difference between Time : Calculator++ and a standard calculator?
Sources
- [1] Play Store listing, source
Report last updated