Spark NZ vs Serenity Bookings App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spark NZ
Manage all your mobile, broadband, and wearable plans in one convenient app. Easily top up, pay bills, track data usage, and discover the latest offers and content.
- Manage all accounts in one place
- Quick bill payments
- Track data usage by hour, day, month
- Top up plans and add data/minutes
- Discover latest offers and content
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The new Spark App has been completely rebuilt from the ground up to put everything you need right at your fingertips. Clear graphics and navigation make it simple to find what you’re after. All your accounts in one place. Manage all your mobile, broadband and wearable plans as well as family and shared data accounts in one place – easily top up, pay bills, add data and minutes, change plans, and more. Pay bills quickly and securely. Pay the way that works for you – with internet banking or one of your cards stored in app. Track data usage. Know what you need and when you’re going to need it with a quick tap. And check out your habits with usage history by the hour, day or month. What’s new? Like to keep up with what’s going on? We bring you a selection of the latest and greatest, whether that’s music, movies, sport, the latest tech, helpful tips, great offers, and more.
Serenity Bookings App
Easily manage appointments, class bookings, and memberships for your studio, club, or salon. Stay updated with real-time timetables, receive reminders, and track your progress towards fitness goals. Requires your facility to use the Serenity management system.
- View real-time class timetables
- Manage appointments and bookings
- Receive booking reminders
- Update personal profile information
- Track activity statistics and progress
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The Serenity app brings you closer to your studio, club or salon with an easy-to-use interface which makes managing appointments, class bookings and your memberships a breeze. View Class Timetables: View your club’s class timetable in real-time. See who’s running the class, how many available seats are left and quickly secure your seat with the push of a button. Manage Bookings: Make and manage bookings with classes, instructors, stylists and other resources offered by the facility. Keep in The Loop and Never Forget an Appointment: Receive push notifications reminding you of upcoming bookings and important notices from staff. Update Your Profile: Keep all your contact information and personal details with the facility up-to-date without having to ring the receptionist to do it for you. Track progress & keep motivated: View plans, routines or workout regimes set by instructors, your activity statistics, visitation history and also progression towards your body goals. Please note that your club must use the Serenity club & studio management system to be able to use this app.
Screenshots
Verdict
The clearest difference is rating: Spark NZ at 3.5 against Serenity Bookings App's 2.3. Spark NZ also leads on ratings volume (88 vs 3). Serenity Bookings App's advantage is ads (none vs shown) and review sentiment (33% vs 8%). On price, update cadence, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Spark NZ holds the better App Store score, 3.5 against 2.3. That said, the two scores are not equally well evidenced: Spark NZ has 88 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 8% of Spark NZ's written reviews are positive against 33% of Serenity Bookings App's, so the app with the better star average is not the one people write more warmly about.
Spark NZ ships an update every 5 weeks, Serenity Bookings App every 3 weeks. The most recent releases landed on September 21, 2026 and August 19, 2026 respectively.
| Parameter | Spark NZ | Serenity Bookings App |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (88 ratings) — better | 2.3 (3 ratings) |
| Positive reviews | 7.8% of reviews | 33.3% of reviews — better |
| Number of ratings | 88 — better | 3 |
| Update frequency | Every 5 weeks | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 193 MB | 88 MB |
| Age rating | 4+ | 4+ |
| Developer | Spark New Zealand Trading Limited | Treshna Enterprises |
Customer experience
Spark NZ
Serenity Bookings App
Bugs and requests
Spark NZ
Reported bugs
4 issues- Login and password reset issues
- Unreliable data tracking and usage information
- Compatibility problems with newer OS versions
- Transactions failing or not reflecting properly
Requested features
4 requests- Improve payment and top-up functionality
- Add more self-service options
- Provide better visibility into account details
- Integrate with other Spark services
Serenity Bookings App
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Spark NZ
No in-app purchases
Serenity Bookings App
No in-app purchases








