# GWAC app vs Emerald

The clearest difference is update cadence: Emerald at monthly against GWAC app's every 10 months. GWAC app's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

GWAC app ships an update every 10 months, Emerald monthly. The most recent releases landed on May 17, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | GWAC app | Emerald |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (2 ratings)](https://appshunter.io/ios/app/emerald/id1561759351/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 17.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Monthly** |
| Monetization | — | Free |
| Size | 103 MB | 110 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [St Barnabas Anglican Church Glen Waverley](https://appshunter.io/developer/1467879964) | [EMERALD PLANET ENVIRONMENTAL PTY LTD](https://appshunter.io/developer/1526454239) |

## What reviewers say

### GWAC app

[App page](https://appshunter.io/ios/app/gwac-app/id1332851397)

**Features:** macOS Compatibility

**In-app purchases:** none


### Emerald

[App page](https://appshunter.io/ios/app/emerald/id1561759351)

Monitor and control your home's energy usage, climate, and safety devices. Track electricity consumption in real-time, set budgets, and receive alerts for emergencies. Turn your air-con into a smart device for remote climate control.

**Highlights:** Real-time electricity usage tracking, Electricity budgeting, Smart air-con control, Remote climate adjustment, Smoke alarm monitoring, Emergency notifications

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

**In-app purchases:** none

**What reviewers like**

- 👍 Real-time electricity consumption monitoring
- 💰 Helps identify cost-saving opportunities
- 📊 Basic functionality works for tracking usage
- 🆓 Free or subsidized installation
- ➕ Add household members feature available

**What reviewers complain about**

- 🐛 Frequent app crashes and freezes
- 📡 Bluetooth connectivity issues and limited range
- 🔌 High battery drain on mobile devices
- ⏱️ Slow data syncing and connection times
- 🔐 Persistent login and authentication problems

**Reported bugs**

- App crashes on startup or when opening specific features
- Smart Actions stop working after updates
- Bluetooth connection drops frequently
- Data not syncing or updating after certain dates
- Login failures and forced logouts

**Requested features**

- Support for 3-tier and multi-tier tariff structures
- WiFi connectivity instead of Bluetooth only
- Advanced smart actions with conditional triggers
- Ability to set mode (boost/silent) in smart actions
- Scheduled automation based on water temperature/capacity


## Frequently asked questions

### Is GWAC app free?

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

### Is Emerald free?

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

### Do GWAC app or Emerald have ads?

Neither GWAC app nor Emerald shows ads.

### Which is updated more often, GWAC app or Emerald?

GWAC app ships an update every 10 months, and Emerald monthly. Most recently, GWAC app was updated on May 17, 2026 and Emerald on September 21, 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.*