# Netzero for Powerwall vs Wave Spa

The clearest difference is review sentiment: Netzero for Powerwall at 90% against Wave Spa's 39%. Netzero for Powerwall also leads on rating (4.8 vs 2.0) and update cadence (weekly vs every 3 months). Wave Spa's advantage is in-app purchases (none vs 2) and iOS requirement (12.4 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Netzero for Powerwall sells 2 in-app purchases, starting at $6.99 per month. Wave Spa asks for nothing beyond the download.

Netzero for Powerwall holds the better App Store score, 4.8 against 2.0. That said, the two scores are not equally well evidenced: Netzero for Powerwall has 768 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 90% of Netzero for Powerwall's written reviews are positive against 39% of Wave Spa's.

Netzero for Powerwall ships an update weekly, Wave Spa every 3 months. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Netzero for Powerwall | Wave Spa |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (768 ratings)](https://appshunter.io/ios/app/netzero-for-powerwall/id6453293821/reviews)** | [2.0 (8 ratings)](https://appshunter.io/ios/app/wave-spa/id6477339416/reviews) |
| Number of ratings | **768** | 8 |
| Positive reviews | **90.3% of reviews** | 39.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 months |
| Monetization | Freemium | **Free** |
| Size | 60 MB | 50 MB |
| Requires iOS | 16.4 | **12.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Netzero Labs, Inc](https://appshunter.io/developer/1725678179) | [Wave Direct Limited](https://appshunter.io/developer/1729041395) |

## What reviewers say

### Netzero for Powerwall

[App page](https://appshunter.io/ios/app/netzero-for-powerwall/id6453293821)

Automate your home energy system to maximize savings and monitor your Powerwall's health. Integrate with utility providers for dynamic pricing and receive alerts for solar or battery issues. Gain insights into energy production and use your device as a home energy dashboard.

**Highlights:** Powerwall automation and scheduling, Utility tariff integration, Solar production monitoring, Powerwall health alerts, Home energy dashboard, Advanced diagnostics

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Netzero Pro - Monthly | $6.99 | per month |
| Netzero Pro - Annual | $69.99 | per year |

**What reviewers like**

- 🚀 Indispensable for home energy nerds
- 🚀 Amazing Diagnostic Tool
- 🚀 Awesome app to extend Tesla capabilities
- 🚀 Outstanding
- 🚀 Great App + Great Support

**What reviewers complain about**

- 🐛 Something changed?
- 🔧 Good but needs more tariff options
- 🐛 May not be compatible with PW3
- 🐛 Difficult

**Reported bugs**

- May not be compatible with PW3
- Diagnostic screen stays black

**Requested features**

- stop battery charging?
- AND function on the conditionality


### Wave Spa

[App page](https://appshunter.io/ios/app/wave-spa/id6477339416)

Manage your Wi-Fi enabled hot tub remotely. Schedule heating, set up maintenance routines, and optimize energy usage by maintaining idle temperatures. Enjoy a perfectly prepared spa experience anytime, anywhere.

**Highlights:** Remote Wi-Fi spa management, Heating and maintenance scheduling, Energy saving idle temperature, Customizable heating programs, Seamless integration with Wi-Fi spas

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

**In-app purchases:** none


## Frequently asked questions

### Is Netzero for Powerwall free?

Netzero for Powerwall is free to download, with in-app purchases available.

### Is Wave Spa free?

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

### Which has better reviews, Netzero for Powerwall or Wave Spa?

Netzero for Powerwall is rated higher. Netzero for Powerwall averages 4.8 out of 5 from 768 ratings, while Wave Spa averages 2.0 from 8 ratings.

### Do Netzero for Powerwall or Wave Spa have ads?

Neither Netzero for Powerwall nor Wave Spa shows ads.

### Which is updated more often, Netzero for Powerwall or Wave Spa?

Netzero for Powerwall ships an update weekly, and Wave Spa every 3 months. Most recently, Netzero for Powerwall was updated on October 1, 2026 and Wave Spa on September 30, 2026.

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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.*