# Date Calculator vs SiteSummit

The clearest difference is in-app purchases: SiteSummit at none against Date Calculator's 4. SiteSummit also leads on update cadence (every 2 days vs every 5 weeks) and iOS requirement (16.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Date Calculator sells 4 in-app purchases, starting at $3.99 per month. SiteSummit asks for nothing beyond the download.

Date Calculator ships an update every 5 weeks, SiteSummit every 2 days. The most recent releases landed on October 14, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Date Calculator | SiteSummit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (198 ratings)](https://appshunter.io/ios/app/date-calculator-timerange/id424582307/reviews)** | — |
| Number of ratings | **198** | — |
| Positive reviews | 64.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 142 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Applorium Ltd](https://appshunter.io/developer/1688522804) | [Site News Inc.](https://appshunter.io/developer/1896778110) |

## What reviewers say

### Date Calculator

[App page](https://appshunter.io/ios/app/date-calculator-timerange/id424582307)

Easily calculate the difference between dates, add or subtract days, and create custom countdowns. Personalize your workweek and skip specific dates for accurate workday calculations. Track events with home screen widgets and receive timely notifications.

**Highlights:** Add/subtract days, weeks, months, years, Customizable workweek calculations, Skip specific dates, Calculate intervals between dates, Create customizable countdowns, Home screen widgets, Countdown notifications

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Timerange Plus Monthly | $3.99 | per month |
| Timerange Plus Annual | $9.99 | per year |
| Timerange Plus | $6.99 | one-time |
| Date Calculator Plus | $19.99 | one-time |

**What reviewers like**

- ✅ Simple and intuitive interface
- ⚡ Quick date calculations
- 📱 Useful widget functionality
- 🎯 Does exactly what it promises
- 💼 Practical for professional use (legal, pharmacy, food industry, travel)

**What reviewers complain about**

- 🐛 Widget crashes and fails to load
- 😕 Confusing user interface for new users
- ❌ Limited functionality in free version
- 💰 Premium features feel overpriced
- 🔧 Frequent bugs after updates

**Reported bugs**

- Premium interval exclusion feature not working despite payment
- Widget displays incorrect values (e.g., '0 days old')
- App crashes when swiping to secondary function
- Date selection doesn't persist when clicking away
- Calculations intermittently off by one day

**Requested features**

- Ability to exclude/include specific holidays and dates
- Support for calculating days between two dates (not just from a date)
- Business days only calculation (exclude weekends)
- Multiple interval tracking simultaneously
- Save custom holiday periods


### SiteSummit

[App page](https://appshunter.io/ios/app/sitesummit/id6771318296)

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Date Calculator free?

Date Calculator is free to download, with in-app purchases available.

### Is SiteSummit free?

SiteSummit is free to download, with no in-app purchases.

### Do Date Calculator or SiteSummit have ads?

Neither Date Calculator nor SiteSummit shows ads.

### Which is updated more often, Date Calculator or SiteSummit?

Date Calculator ships an update every 5 weeks, and SiteSummit every 2 days. Most recently, Date Calculator was updated on October 14, 2026 and SiteSummit on September 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*