# Date Calculator vs WFM OBU

The clearest difference is review sentiment: Date Calculator at 63% against WFM OBU's 14%. Date Calculator also leads on update cadence (every 6 weeks vs every 13 months). WFM OBU's advantage is in-app purchases (none vs 4) and iOS requirement (14.2 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. WFM OBU asks for nothing beyond the download.

Date Calculator ships an update every 6 weeks, WFM OBU every 13 months. The most recent releases landed on October 19, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Date Calculator | WFM OBU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (200 ratings)](https://appshunter.io/ios/app/date-calculator-timerange/id424582307/reviews)** | — |
| Number of ratings | **200** | — |
| Positive reviews | **63.1% of reviews** | 14.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 13 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 21 MB | 92 MB |
| Requires iOS | 18.0 | **14.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Applorium Ltd](https://appshunter.io/developer/1688522804) | [E - CONSULTING, Dochirne Pidpryemstvo](https://appshunter.io/developer/1171002376) |

## 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


### WFM OBU

[App page](https://appshunter.io/ios/app/wfm-obu/id1451749995)

This application allows call center employees to view their work schedules based on Workforce Management (WFM) data. It provides a convenient way to access personal work plans directly on a mobile device.

**Highlights:** View work schedules, Access WFM data, Mobile convenience, Employee focused

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Date Calculator free?

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

### Is WFM OBU free?

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

### Do Date Calculator or WFM OBU have ads?

Neither Date Calculator nor WFM OBU shows ads.

### Which is updated more often, Date Calculator or WFM OBU?

Date Calculator ships an update every 6 weeks, and WFM OBU every 13 months. Most recently, Date Calculator was updated on October 19, 2026 and WFM OBU on October 10, 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.*