Comparison

Spark NZ vs Serenity Bookings App

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Read full description

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.

About

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.

Highlights
  • View real-time class timetables
  • Manage appointments and bookings
  • Receive booking reminders
  • Update personal profile information
  • Track activity statistics and progress
Features
Read full description

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

Spark NZ4 screens
Serenity Bookings App3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
Spark NZ versus Serenity Bookings App: the parameters behind the verdict, then further details
ParameterSpark NZSerenity Bookings App
PriceFreeFree
Rating3.5 (88 ratings) — better2.3 (3 ratings)
Positive reviews7.8% of reviews33.3% of reviews — better
Number of ratings88 — better3
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.613.0 — better
Further details — not scored
Size193 MB88 MB
Age rating4+4+
DeveloperSpark New Zealand Trading LimitedTreshna Enterprises

Customer experience

Spark NZ

All ratings86 ratings
Positive62.8%
Neutral8.1%
Negative29.1%
Written reviews166 reviews
Positive7.8%
Neutral6.0%
Negative86.1%

Serenity Bookings App

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

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

None

Spark NZ

No in-app purchases

None

Serenity Bookings App

No in-app purchases

Questions

Is Spark NZ free?
Spark NZ is free to download, with no in-app purchases.
Is Serenity Bookings App free?
Serenity Bookings App is free to download, with no in-app purchases.
Which has better reviews, Spark NZ or Serenity Bookings App?
Spark NZ is rated higher. Spark NZ averages 3.5 out of 5 from 88 ratings, while Serenity Bookings App averages 2.3 from 3 ratings.
Do Spark NZ or Serenity Bookings App have ads?
Spark NZ shows ads; Serenity Bookings App does not.
Which is updated more often, Spark NZ or Serenity Bookings App?
Spark NZ ships an update every 5 weeks, and Serenity Bookings App every 3 weeks. Most recently, Spark NZ was updated on September 21, 2026 and Serenity Bookings App on August 19, 2026.

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