Report updated May 19, 2026
Date & Time Interval
For casual planners and professionals requiring quick, precise date and time interval calculations without complex professional-grade toolsets.
Date & Time Interval is an established productivity app that is completely free. With a 4.6/5 rating from 114 reviews, it shows polarized user reception.
What is Date & Time Interval?
Date & Time Interval is a free utility for date arithmetic, age calculation, and time-zone conversion on iOS.
Users hire this app to bypass manual decimal conversions in time-tracking, serving the need for rapid, error-free interval math.
Current Momentum
v2.0 · 46mo ago
Zombie- No feature updates since mid-2022.
- Maintains stable 4.65 rating.
Active Nemesis
Time & Date Calculator
By timeanddate.com
Other Rivals
7-Day Rank Pulse 🇺🇸
ProductivityNo ranking data
Rating Pulse 🇺🇸
What makes this app unique?
What Does It Look Like?
What Are The Key Features?
Performs addition and subtraction of time intervals directly in hours and minutes format.
Calculates weekdays between two dates with toggle options to include or exclude weekends.
How much does it cost?
- Fully free access to all features
The app operates as a free utility with no visible subscription gates, relying on broad user reach.
Who Built It?
SACHIN SABU
Providing utility-focused tools for time and date management. These apps help users perform precise calculations for work, study, and personal scheduling.
Portfolio
3
Apps
What other apps does SACHIN SABU make?
Explore the full SACHIN SABU report
Portfolio breakdown, audience, momentum, and every app published by SACHIN SABU.
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.
What is the competitive landscape for Date & Time Interval?
Where is it available?
Localized markets (1)
How's The Productivity Market?
Market outlook for this category
Available very soon
Which niche is Date & Time Interval in?
to calculate time intervals and dates
Explore the full Time Management Calculators niche
Every app in this space — 1 tracked, the niche's live rankings, and Marlvel's editorial take on the job-to-be-done.
The rivals identified
Nemeses(1)
This app is the dominant market leader, leveraging the massive brand authority and specialized domain expertise of the timeanddate.com platform.
Differentiators
- Leverages a massive, trusted web-based data infrastructure that provides unparalleled accuracy for global time zone conversions.
- Offers a comprehensive suite of astronomical and calendar-based calculations that go far beyond simple date arithmetic.
- Maintains a professional, utility-first interface that appeals to enterprise and power users rather than casual consumers.
Head to head
The target app should focus on superior UX and ease-of-use to capture casual users who find the nemesis platform overly complex.
Contenders(2)
High-velocity development and strong user engagement make this a primary threat for the target app's core functionality.
Differentiators
- Implements a highly responsive, modern UI that prioritizes speed for quick, repetitive time-based mathematical operations.
- Maintains a consistent release cadence that keeps the feature set aligned with the latest iOS design patterns.
A long-standing, stable utility that maintains a large user base through consistent, reliable performance in the productivity category.
Differentiators
- Provides a broad, all-in-one feature set that covers everything from age calculation to complex date interval math.
- Offers a mature, battle-tested codebase that minimizes crashes and performance issues during long-duration calculations.
Same space(3)
Targets a specific sub-niche of the productivity market by focusing exclusively on professional time-tracking and payroll calculations.
Differentiators
- Specializes in payroll-oriented time math, such as calculating overtime and hourly wages, which the target app lacks.
- Optimized for professional users who need to export logs for timesheets rather than just simple interval math.
A legacy utility that continues to hold market share through a simple, no-nonsense approach to date arithmetic.
Differentiators
- Focuses on a minimalist, single-screen design that allows for rapid input without navigating through complex sub-menus.
- Provides a lightweight footprint that is ideal for users with older devices or limited storage capacity.
A niche utility that serves as a direct alternative for users requiring specific time-based arithmetic functionality.
Differentiators
- Features a specialized calculator layout designed specifically for hours and minutes, avoiding standard decimal-based math errors.
- Offers a focused, distraction-free environment that is highly effective for quick, ad-hoc time calculations.
Compare Date & Time Interval against every rival
All rivals in one side-by-side table — identity, store metrics, ratings & sentiment, and strategic intel — plus a head-to-head page for each.
The outtake for Date & Time Interval
Strengths to defend, gaps to attack
Core Strengths
- Focused interface reduces cognitive load for casual users
Critical Frictions
- No feature updates since mid-2022
- Lacks professional-grade payroll export functionality
Growth Levers
- Integration of payroll-specific export features
Market Threats
- Competitors with 2-week release cadences
What are the next best moves?
Audit UI against modern iOS design patterns because the app has not updated since 2022 → maintain competitive parity
Competitors like Time Calculator × are gaining ground through modern, responsive UI updates.
Trade-off: Deprioritize new feature development until the core codebase is verified for current OS compatibility.
A counter-intuitive read
The app's lack of updates is a strategic choice to avoid feature bloat, which actually protects its core value proposition against the complexity of the nemesis platform.
Feature Gaps vs Competitors
- Payroll-oriented time math (available in Work Hours Calculator)
- Modernized UI design patterns (available in Time Calculator ×)
Key Takeaways
The app provides a reliable, focused utility for casual users, but the lack of updates since 2022 risks long-term churn to more active competitors, so the PM should prioritize a UI refresh to defend the current rating baseline.
Where Is It Heading?
Stable
The casual utility market is consolidating around apps with high-velocity release cadences. Without a clear update roadmap, this app will likely see a gradual decline in new-user conversion as competitors modernize their interfaces.
The absence of updates since mid-2022 signals a transition to maintenance mode, which risks losing market share to active competitors.
The 4.65 rating baseline suggests the current feature set satisfies the core user base, providing a stable foundation for potential future pivots.