Spark NZ vs Smart Water Tech
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.
Smart Water Tech
Monitor and manage multiple water tanks wirelessly with advanced features like leak detection and pump control. This app offers real-time data, time-to-empty calculations, and weather forecasts for efficient water management.
- Wireless tank level monitoring
- Leak detection
- Pump control
- Time to empty calculation
- Weather forecasting
- Manage up to 12 tanks
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Smart Water designs and manufactures the ultimate tank management system. An all new release of hardware and software provides a significant technology and performance upgrade. Incorporating state of the art long range wireless connectivity, increased water measurement accuracy and reliability coupled to a suite of features including tank level, time to empty, leak detection, pump control and even weather forecasting. Now offered with the convenience of a fully featured mobile app allowing you to manage up to twelve tanks and twelve pump controllers from any iOS device. Choose a system with a convenient WiFi LCD Keypad or alternatively our app only system utilising our new WiFi Gateway device.
Screenshots
Verdict
The clearest difference is rating: Spark NZ at 3.5 against Smart Water Tech's 2.3. Spark NZ also leads on in-app purchases (none vs 1) and ratings volume (88 vs 3). Smart Water Tech's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 5 weeks). On price, review sentiment, monetization model 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. Smart Water Tech sells 1 in-app purchase, starting at $15.49 per year. Spark NZ asks for nothing beyond the download.
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 13% of Smart Water Tech'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, Smart Water Tech every 2 weeks. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.
| Parameter | Spark NZ | Smart Water Tech |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (88 ratings) — better | 2.3 (3 ratings) |
| Positive reviews | 7.8% of reviews | 12.5% of reviews — better |
| Number of ratings | 88 — better | 3 |
| Update frequency | Every 5 weeks | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.6 | 16.6 |
| Further details — not scored | ||
| Size | 193 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Spark New Zealand Trading Limited | Ivent Solutions Limited |
Customer experience
Spark NZ
Smart Water Tech
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
Smart Water Tech
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Spark NZ
No in-app purchases
Smart Water Tech
- Smart Water Premium$15.491 Year
