# Date Calculator vs Biowiz Habit Tracker

The clearest difference is update cadence: Biowiz Habit Tracker at every 6 days against Date Calculator's every 6 weeks. On price, ads, in-app purchases 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 and Biowiz Habit Tracker sells 3 in-app purchases, starting at $4.99 per year. Whichever you choose, the download price is not the number that matters.

Date Calculator ships an update every 6 weeks, Biowiz Habit Tracker every 6 days. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Date Calculator | Biowiz Habit Tracker |
| --- | --- | --- |
| 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 | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 21 MB | 10 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Applorium Ltd](https://appshunter.io/developer/1688522804) | [RITWIZ SWARNKAR](https://appshunter.io/developer/6798378569) |

## 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


### Biowiz Habit Tracker

[App page](https://appshunter.io/ios/app/biowiz-habit-tracker/id6798378567)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Biowiz HabitTracker Pro - Annual | $4.99 | per year |
| Biowiz HabitTracker Pro - Student | $9.99 | one-time |
| Biowiz HabitTracker Pro - LifeTime | $14.99 | one-time |


## Frequently asked questions

### Is Date Calculator free?

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

### Is Biowiz Habit Tracker free?

Biowiz Habit Tracker is free to download, with in-app purchases available.

### Do Date Calculator or Biowiz Habit Tracker have ads?

Neither Date Calculator nor Biowiz Habit Tracker shows ads.

### Which is updated more often, Date Calculator or Biowiz Habit Tracker?

Date Calculator ships an update every 6 weeks, and Biowiz Habit Tracker every 6 days. Most recently, Date Calculator was updated on October 23, 2026 and Biowiz Habit Tracker on October 25, 2026.

---

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