NSP Security vs Holler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NSP Security
Unlock doors using your smartphone via Bluetooth. Securely manage access rights for users and track entry events in real-time. This system integrates with existing RFID readers for comprehensive control.
- Unlock doors with smartphone
- Bluetooth Low Energy (BLE) access
- Securely issue and revoke access rights
- Real-time event logging and transmission
- Integrates with RFID readers
- User-friendly mobile application
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NSP’s Mobile Access, using Bluetooth Low Energy (BLE) allows doors to be opened with a smartphone, potentially removing the need for a card or fob. NSP’s Mobile Access securely issues, revokes the access rights you grant your users, and the access can be delegated across NSP range of RFID control readers throughout your accommodation facility or commercial premises in the same way a traditional Access Control System would be managed. The NSP App will collect data from each Electronic Lockset that logs each ‘event’ from each door, which is transmitted from the User’s phone to the server – safely and securely updating the controlling PC in real time. The NSP Mobile Access System is controlled by each user / Resident via the NSP Mobile App (Application) which is user friendly, intuitive, and can be incorporated in to an existing App if where required.
Holler
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Holler connects customers with trusted local professionals through a simple, secure booking platform. Whether you need a regular, deep or end of tenancy clean, or your oven or windows done, Holler makes discovering, booking and paying for local services effortless. Why Holler? • Discover trusted professionals nearby • Browse verified profiles and services • Book appointments instantly • Secure online payments • Real-time booking management • Receive booking confirmations and reminders • Built-in messaging between customers and providers • Easy cancellation and rescheduling Holler is designed to make finding great local services simple, reliable and stress-free. Key Features • Find trusted local professionals • Instant online booking • Secure payments • Verified service providers • Appointment reminders • Built-in messaging • Booking history • Easy cancellations • Business profile management • Customer reviews & ratings CLEANING YOU CAN BOOK ON HOLLER Book a cleaner near you in a few taps. Holler lists local cleaners for regular cleaning, deep cleaning, end of tenancy cleaning, oven cleaning and window cleaning. Looking for cleaners near me? Enter your postcode, choose a time, see the full price before you book and pay securely in the app. On the day you can follow your cleaner on the map and message them in the app, and reviews come only from completed bookings. FOR SELF-EMPLOYED CLEANERS Run your cleaning business from your phone, full time or as a side hustle. List your cleaning service free, with no subscription and no lead fees. Set your own prices, hours and the area you cover, bring your own clients, and get paid in the app to your UK bank account. Holler takes an 8% commission only when a booking is completed, plus Stripe's standard card fee. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.hollerapp.co.uk/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: NSP Security at none against Holler's 3. NSP Security also leads on iOS requirement (11.0 vs 15.1). Holler's advantage is update cadence (weekly vs every 6 weeks). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Holler sells 3 in-app purchases, starting at $19.99 per month. NSP Security asks for nothing beyond the download.
NSP Security ships an update every 6 weeks, Holler weekly. Both last shipped on October 24, 2026.
| Parameter | NSP Security | Holler |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (3 ratings) — better | — |
| Positive reviews | 8.6% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 6 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 34 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | NSP Europe Ltd | HollerApp Limited |
In-app purchases
NSP Security
No in-app purchases
Holler
- Holler Services$19.991 Month
- Holler Services$29.993 Months
- Holler Services$49.996 Months









