# KastlePresence vs ML Systems

KastlePresence and ML Systems are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | KastlePresence | ML Systems |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (314 ratings)](https://appshunter.io/ios/app/kastlepresence/id1061078659/reviews)** | — |
| Number of ratings | **314** | — |
| Positive reviews | 20.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 302 MB | 86 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Kastle Systems](https://appshunter.io/developer/1061078658) | [Sal Parvez](https://appshunter.io/developer/6799697173) |

## What reviewers say

### KastlePresence

[App page](https://appshunter.io/ios/app/kastlepresence/id1061078659)

This app offers secure and convenient access control for workplaces using mobile technology. It enables hands-free entry, remote unlocking, and touchless elevator control, integrating IoT for enhanced building management and personalized security.

**Highlights:** Touchless mobile access, Remote door unlocking, Hands-free entry, Real-time occupancy monitoring, Location-based services, Mass notification capabilities

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Hands-free touchless access when working properly
- 👍 Intuitive and easy to use interface
- 🔒 Convenient mobile credential replacement for physical badges
- ✨ Works seamlessly for some users without taking phone out
- 🌟 Great for pandemic safety with contactless door/elevator access

**What reviewers complain about**

- 🐛 Unreliable and inconsistent functionality - works only 10-30% of the time
- 📱 Requires app to be open despite claims of background operation
- 🔋 Severe battery drain and excessive power consumption
- ⚠️ Constantly triggers Apple Pay instead of scanning properly
- 💥 Frequent crashes and freezing, often requiring reinstall

**Reported bugs**

- App crashes on launch or during use
- Login screen freezes and won't proceed
- Incompatibility with iOS 11, 12, and newer versions
- App closes immediately after launching
- Bluetooth connectivity issues

**Requested features**

- Apple Watch companion app (most frequently requested)
- Apple Wallet integration
- Background operation without opening app
- Improved range and sensitivity settings
- Option to disable wallet access prompts


### ML Systems

[App page](https://appshunter.io/ios/app/ml-systems/id6799697171)

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

**In-app purchases:** none


## Frequently asked questions

### Is KastlePresence free?

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

### Is ML Systems free?

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

### Do KastlePresence or ML Systems have ads?

Neither KastlePresence nor ML Systems shows ads.

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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.*