# Extreme Calendar vs Clock In For Work

The clearest difference is in-app purchases: Clock In For Work at none against Extreme Calendar's 1. Clock In For Work also leads on review sentiment (100% vs 73%) and price ($2.99 vs $7.99). Extreme Calendar's advantage is ratings volume (24 vs 5) and iOS requirement (12.0 vs 16.0). On rating, ads and device support there is nothing between them.

Extreme Calendar costs $7.99 and Clock In For Work $2.99 up front. Extreme Calendar sells 1 one-off in-app purchase. Clock In For Work asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.3 for Extreme Calendar against 4.4 for Clock In For Work. Both are backed by a comparable volume of ratings — 24 and 5 respectively. Written reviews are what separate them: 73% of Extreme Calendar's written reviews are positive against 100% of Clock In For Work's.

Extreme Calendar ships an update every 4 months, Clock In For Work every 5 weeks. Both last shipped on October 29, 2026.

## The numbers

| Metric | Extreme Calendar | Clock In For Work |
| --- | --- | --- |
| Price | $7.99 | **$2.99** |
| Rating | [4.3 (24 ratings)](https://appshunter.io/ios/app/extreme-calendar/id431771565/reviews) | **[4.4 (5 ratings)](https://appshunter.io/ios/app/clock-in-for-work/id1081905332/reviews)** |
| Number of ratings | **24** | 5 |
| Positive reviews | 73.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#101** |
| Size | 30 MB | 3 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Birdsoft LLC](https://appshunter.io/developer/293366061) | [H Hubeek](https://appshunter.io/developer/516080577) |

## What reviewers say

### Extreme Calendar

[App page](https://appshunter.io/ios/app/extreme-calendar/id431771565)

This powerful calendar app offers advanced views and flexible event management for busy individuals. It integrates with native calendar data and provides quick event entry, with options to expand functionality through in-app purchases.

**Highlights:** Advanced calendar views (Year, Month, Week, Day, Agenda), Birthdays and Anniversaries from contacts, Advanced repeating event options, Move/Copy Events, Natural Language Entry, Event Templates, Syncs with native calendar data

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extreme Agenda | $3.99 | one-time |

**What reviewers like**

- 👍 Intuitive and user-friendly interface
- 📅 Multiple view options (day, week, month, agenda)
- 🎨 Customizable icons and visual organization
- 🔄 Reliable syncing across devices
- ⏰ Multiple reminder/alarm options

**What reviewers complain about**

- 🐛 Frequent app crashes and instability
- ⚠️ Data loss and disappearing events
- 🔄 Syncing issues between devices
- ⏱️ Slow app performance and loading times
- 🎨 Limited icon selection in free version

**Reported bugs**

- App crashes on launch or during use
- Events disappearing without explanation
- Bouncy event creation window causing data loss
- Syncing failures between iPhone and iPad
- App becomes unresponsive with large contact lists

**Requested features**

- More diverse icon options
- Better alarm/reminder sound variety
- Ability to display notes in monthly view
- Drag-and-drop appointment editing
- Double-tap to create appointments


### Clock In For Work

[App page](https://appshunter.io/ios/app/clock-in-for-work/id1081905332)

**Currently charting:** #101 Top Paid · Business (US App Store)

Easily track your work hours for projects. This tool allows for simple administration of your time, including adding holidays and sick days. Export and import your working hours data in CSV format.

**Highlights:** Calculate working hours, Project time tracking, Add holidays and sick days, Export/import as CSV, Easy administration

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

**In-app purchases:** none


## Frequently asked questions

### Is Extreme Calendar free?

Extreme Calendar costs $7.99, and also offers in-app purchases.

### Is Clock In For Work free?

Clock In For Work costs $2.99, with no in-app purchases.

### Which has better reviews, Extreme Calendar or Clock In For Work?

Clock In For Work is rated higher. Extreme Calendar averages 4.3 out of 5 from 24 ratings, while Clock In For Work averages 4.4 from 5 ratings.

### Do Extreme Calendar or Clock In For Work have ads?

Neither Extreme Calendar nor Clock In For Work shows ads.

### Which is updated more often, Extreme Calendar or Clock In For Work?

Extreme Calendar ships an update every 4 months, and Clock In For Work every 5 weeks. Most recently, Extreme Calendar was updated on October 29, 2026 and Clock In For Work on October 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.*