Comparison

Tempus Calc vs Date Calculation Assistant

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Tempus Calc

Features
Read full description

FEATURES DURATION CALCULATOR • Calculate the exact time between any two dates • See results in years, months, and total days • Perfect for age calculations, anniversary tracking, and project timelines • Instant results as you select dates ADD/SUBTRACT DAYS • Find future dates by adding days • Calculate past dates by subtracting days • Support for negative values up to 100 years • Ideal for deadline planning and scheduling SAVED CALCULATIONS • Save frequently used calculations for quick access • Search and filter your saved items • Swipe to delete individual calculations • Clear all with confirmation protection • Perfect for recurring date calculations BEAUTIFUL DESIGN • Elegant, modern interface • Full Dark Mode support • Smooth animations and haptic feedback • Color-coded results for clarity • Optimized for all iPhone sizes PERFECT FOR • Project Managers - Track milestones and deadlines • Event Planners - Calculate dates for weddings, parties, conferences • Business Professionals - Plan delivery dates and schedules • Students - Track assignment due dates and semester planning • Travelers - Plan trips and calculate vacation lengths • Parents - Track child development milestones • Anyone who works with dates regularly WHY CHOOSE TEMPUS CALC? PRIVACY FIRST All calculations are stored locally on your device. No data collection, no tracking, no cloud sync required. Your dates are yours alone. LIGHTNING FAST Calculations happen instantly as you interact. No waiting, no loading screens. Just immediate results. OFFLINE CAPABLE Works perfectly without internet connection. Calculate dates anywhere, anytime. NO ADS Focus on your calculations without distractions. No advertisements, ever. HOW IT WORKS Duration Mode: 1. Select a start date 2. Select an end date 3. See instant results in multiple formats 4. Save for later if needed Add Days Mode: 1. Choose a starting date 2. Enter number of days (positive or negative) 3. See the resulting date immediately 4. Save your calculation for future reference

About

Date Calculation Assistant

Features
Read full description

Date Calculation Assistant helps you perform date calculations quickly and easily. Key Features: • Date Difference: Calculate the number of days between two dates. Select a date range and instantly see the result. • Date After: Calculate the date N days after a given date. Pick a base date, enter the number of days, and get the target date. • Date Before: Calculate the date N days before a given date. Pick a base date, enter the number of days, and get the target date. • Calculation History: All calculations are saved automatically. Browse, review, and reuse your past results in the History tab of each feature. Use Cases: - Plan project timelines and deadlines - Count days until or since important events - Calculate ages and durations - Plan travel or event dates - Track days between appointments or milestones Date Calculation Assistant features an intuitive interface with Calculator and History tabs for each tool, making date math simple and efficient. Terms of Use: https://date-calculator-2cf52.web.app/#/eula

Screenshots

Tempus Calc4 screens
Date Calculation Assistant4 screens

Verdict

The call

The clearest difference is in-app purchases: Tempus Calc at none against Date Calculation Assistant's 2. Date Calculation Assistant's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, update cadence and ads there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Date Calculation Assistant sells 2 in-app purchases, starting at $0.99 per month. Tempus Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Tempus Calc ships an update every 8 days, Date Calculation Assistant every 5 days. The most recent releases landed on September 19, 2026 and September 13, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Tempus Calc versus Date Calculation Assistant: the parameters behind the verdict, then further details
ParameterTempus CalcDate Calculation Assistant
PriceFreeFree
Update frequencyEvery 8 daysEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size3 MB35 MB
Age rating4+4+
Developerommar alquisiēŽ‰č¾‰ 黄

In-app purchases

None

Tempus Calc

No in-app purchases

2 purchases

Date Calculation Assistant

Subscriptions2
  • Monthly Subscription$0.991 Month
  • Yearly Subscription$5.991 Year

Questions

Is Tempus Calc free?
Tempus Calc is free to download, with no in-app purchases.
Is Date Calculation Assistant free?
Date Calculation Assistant is free to download, with in-app purchases available.
Do Tempus Calc or Date Calculation Assistant have ads?
Neither Tempus Calc nor Date Calculation Assistant shows ads.
Which is updated more often, Tempus Calc or Date Calculation Assistant?
Tempus Calc ships an update every 8 days, and Date Calculation Assistant every 5 days. Most recently, Tempus Calc was updated on September 19, 2026 and Date Calculation Assistant on September 13, 2026.

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