# Rinnai Central vs EC Tool Pro

The clearest difference is review sentiment: EC Tool Pro at 100% against Rinnai Central's 9%. EC Tool Pro also leads on rating (5.0 vs 1.6). Rinnai Central's advantage is ratings volume (396 vs 1) and update cadence (monthly vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

EC Tool Pro holds the better App Store score, 5.0 against 1.6. That said, the two scores are not equally well evidenced: Rinnai Central has 396 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 9% of Rinnai Central's written reviews are positive against 100% of EC Tool Pro's.

Rinnai Central ships an update monthly, EC Tool Pro every 3 months. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Rinnai Central | EC Tool Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (396 ratings)](https://appshunter.io/ios/app/rinnai-central/id6444321202/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ec-tool-pro/id6447510541/reviews)** |
| Number of ratings | **396** | 1 |
| Positive reviews | 9.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free | Free |
| Size | 79 MB | 25 MB |
| Requires iOS | **15.4.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rinnai America Corp](https://appshunter.io/developer/1045235922) | [VTech Telecommunications Limited](https://appshunter.io/developer/1069233460) |

## What reviewers say

### Rinnai Central

[App page](https://appshunter.io/ios/app/rinnai-central/id6444321202)

This app connects Rinnai tankless water heater owners to their devices for temperature control and scheduling. Professional installers can use it to register appliances, perform service, access documentation, and order parts.

**Highlights:** Adjust water temperature, Schedule hot water, Activate recirculation, Register appliances, Perform remote service, Access documentation, Order replacement parts

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Works great
- 🚀 Much improved
- 🚀 Fantastic
- 🚀 Working perfectly now

**What reviewers complain about**

- 🐛 Doesn't work at all
- 🐛 Bug in 4.3.0
- 🐛 Awful. Just terrible
- 🐛 Lousy App
- 🐛 Rinnai does not care

**Reported bugs**

- Control failed is still happening in latest version
- Login screen freezes
- Incompatible with older devices

**Requested features**

- Add device through Bluetooth missing
- Dark mode option
- Advanced analytics dashboard


### EC Tool Pro

[App page](https://appshunter.io/ios/app/ec-tool-pro/id6447510541)

This app simplifies the configuration of the E-Smart T961 thermostat. It allows users to easily create and edit profiles for guestroom comfort directly from their mobile device.

**Highlights:** Thermostat configuration, Profile editing, Profile creation, Guestroom comfort settings, Easy installation support

**In-app purchases:** none


## Frequently asked questions

### Is Rinnai Central free?

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

### Is EC Tool Pro free?

EC Tool Pro is free to download, with no in-app purchases.

### Which has better reviews, Rinnai Central or EC Tool Pro?

EC Tool Pro is rated higher. Rinnai Central averages 1.6 out of 5 from 396 ratings, while EC Tool Pro averages 5.0 from 1 ratings.

### Do Rinnai Central or EC Tool Pro have ads?

Neither Rinnai Central nor EC Tool Pro shows ads.

### Which is updated more often, Rinnai Central or EC Tool Pro?

Rinnai Central ships an update monthly, and EC Tool Pro every 3 months. Most recently, Rinnai Central was updated on October 27, 2026 and EC Tool Pro on October 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.*