# Solar Controller vs Apparent Water Heater

The clearest difference is iOS requirement: Solar Controller at 13.0 against Apparent Water Heater's 16.4. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Solar Controller ships an update every 9 months, Apparent Water Heater every 5 months. The most recent releases landed on September 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Solar Controller | Apparent Water Heater |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/apparent-water-heater/id6737422939/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 5 months** |
| Monetization | — | Free |
| Size | 23 MB | 50 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [TBB Power Co., Ltd](https://appshunter.io/developer/1089239531) | [Apparent Inc.](https://appshunter.io/developer/1776216635) |

## What reviewers say

### Solar Controller

[App page](https://appshunter.io/ios/app/solar-controller/id1665008052)

**In-app purchases:** none


### Apparent Water Heater

[App page](https://appshunter.io/ios/app/apparent-water-heater/id6737422939)

Monitor your renewable energy system in real-time. Track water temperature, energy consumption, savings, and environmental impact directly from your phone.

**Highlights:** Real-time temperature monitoring, Energy usage tracking, Money saved calculation, Environmental impact tracking, Renewable energy system insights

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

**In-app purchases:** none


## Frequently asked questions

### Is Solar Controller free?

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

### Is Apparent Water Heater free?

Apparent Water Heater is free to download, with no in-app purchases.

### Do Solar Controller or Apparent Water Heater have ads?

Neither Solar Controller nor Apparent Water Heater shows ads.

### Which is updated more often, Solar Controller or Apparent Water Heater?

Solar Controller ships an update every 9 months, and Apparent Water Heater every 5 months. Most recently, Solar Controller was updated on September 25, 2026 and Apparent Water Heater on October 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*