# ECCOTEMP vs FlyHJ Sync

The clearest difference is update cadence: FlyHJ Sync at weekly against ECCOTEMP's every 19 months. ECCOTEMP's advantage is iOS requirement (13.0 vs 17.6). 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.

ECCOTEMP ships an update every 19 months, FlyHJ Sync weekly. The most recent releases landed on September 23, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | ECCOTEMP | FlyHJ Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (18 ratings)](https://appshunter.io/ios/app/eccotemp/id1507808674/reviews)** | — |
| Number of ratings | **18** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Weekly** |
| Monetization | Free | — |
| Size | 212 MB | 5 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eccotemp Systems, LLC](https://appshunter.io/developer/1507808673) | [Carson Lee](https://appshunter.io/developer/1828022160) |

## What reviewers say

### ECCOTEMP

[App page](https://appshunter.io/ios/app/eccotemp/id1507808674)

Control your smart water heater remotely to adjust temperature, monitor energy usage, and set schedules. Integrate with voice assistants for hands-free operation and manage multiple units from one app.

**Highlights:** Remote temperature adjustment, Energy usage monitoring, Scheduling and timers, Voice command integration (Alexa, Google), Management of multiple units, Monetary value of consumption

**Features:** macOS Compatibility

**In-app purchases:** none


### FlyHJ Sync

[App page](https://appshunter.io/ios/app/flyhj-sync/id6748925501)

**In-app purchases:** none


## Frequently asked questions

### Is ECCOTEMP free?

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

### Is FlyHJ Sync free?

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

### Do ECCOTEMP or FlyHJ Sync have ads?

Neither ECCOTEMP nor FlyHJ Sync shows ads.

### Which is updated more often, ECCOTEMP or FlyHJ Sync?

ECCOTEMP ships an update every 19 months, and FlyHJ Sync weekly. Most recently, ECCOTEMP was updated on September 23, 2026 and FlyHJ Sync on September 29, 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.*