# PostalCal vs KARR Security

The clearest difference is price: KARR Security at Free against PostalCal's $5.99. KARR Security also leads on in-app purchases (none vs 2) and ratings volume (190 vs 1). PostalCal's advantage is rating (5.0 vs 2.9) and review sentiment (72% vs 44%). On ads and device support there is nothing between them.

KARR Security is free to download; PostalCal costs $5.99 up front. PostalCal sells 2 one-off in-app purchases. KARR Security asks for nothing beyond the download.

PostalCal holds the better App Store score, 5.0 against 2.9. That said, the two scores are not equally well evidenced: KARR Security has 190 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 72% of PostalCal's written reviews are positive against 44% of KARR Security's.

PostalCal ships an update every 9 months, KARR Security every 2 months. Both last shipped on October 15, 2026.

## The numbers

| Metric | PostalCal | KARR Security |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/postalcal/id555893957/reviews)** | [2.9 (190 ratings)](https://appshunter.io/ios/app/karr-security/id6443616063/reviews) |
| Number of ratings | 1 | **190** |
| Positive reviews | **72.2% of reviews** | 44.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#120** | — |
| Size | 1 MB | 189 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Franco](https://appshunter.io/developer/540639752) | [WEBHOUSE SOFTWARE SOLUTIONS PTY LTD](https://appshunter.io/developer/1036168238) |

## What reviewers say

### PostalCal

[App page](https://appshunter.io/ios/app/postalcal/id555893957)

**Currently charting:** #120 Top Paid · Utilities (US App Store)

This calendar app is designed for postal employees with rotating days off. It displays paydays and postal holidays, eliminating the need for annual paper calendars. Optional in-app purchases allow for color customization and adding personal events.

**Highlights:** Rotating days off calendar, Payday display, Postal observed holidays, Customizable color rotations, Add personal events

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Custom Calendar Colors | $3.99 | one-time |
| Calendar Events | $4.99 | one-time |

**What reviewers like**

- 👍 Easy to use calendar
- 🗓️ Helpful for planning
- 👨‍👩‍👧‍👦 Simplifies family scheduling
- 🎨 Customizable colors
- ✅ Great functionality

**What reviewers complain about**

- 🐛 Crashing issues
- 📅 Outdated information
- ⏳ Lacks future year updates
- ❌ Re-purchase required
- 🐛 App not opening

**Reported bugs**

- Re-purchase required after payment
- No dates after 11th day
- No 10 shows up
- Last weeks of months have dots instead of dates
- Month & Year not displayed

**Requested features**

- Sync with other calendars (iCal)
- Add custom events option
- Ability to add notes
- Integrate weather
- Add mail volumes manually


### KARR Security

[App page](https://appshunter.io/ios/app/karr-security/id6443616063)

This app enhances KARR Security systems, offering theft prevention and GPS-based vehicle recovery. It provides convenient, selectable features for seamless integration with the security products.

**Highlights:** Seamless integration with KARR Security products, Theft prevention features, GPS-based vehicle recovery, Convenient and selectable features

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Efficient tracking and notifications
- 🔒 Helpful security features
- 👍 User-friendly app interface
- 💡 Convenient vehicle management

**What reviewers complain about**

- 🐛 Connectivity and reliability issues
- 🔍 Inaccurate location tracking
- 💤 Limited remote functionality
- 🤔 Confusing setup and onboarding

**Reported bugs**

- App crashes and freezes frequently
- Notifications not working as expected
- Inconsistent connectivity with vehicle
- Incorrect vehicle location reporting

**Requested features**

- Improve remote lock/unlock capabilities
- Provide more detailed location tracking
- Add support for smartwatch integration
- Enhance customization options


## Frequently asked questions

### Is PostalCal free?

PostalCal costs $5.99, and also offers in-app purchases.

### Is KARR Security free?

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

### Which has better reviews, PostalCal or KARR Security?

PostalCal is rated higher. PostalCal averages 5.0 out of 5 from 1 ratings, while KARR Security averages 2.9 from 190 ratings.

### Do PostalCal or KARR Security have ads?

Neither PostalCal nor KARR Security shows ads.

### Which is updated more often, PostalCal or KARR Security?

PostalCal ships an update every 9 months, and KARR Security every 2 months. Most recently, PostalCal was updated on October 15, 2026 and KARR Security on October 15, 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.*