# TBB Energy Hub vs E3 Connect

The clearest difference is update cadence: E3 Connect at every 3 weeks against TBB Energy Hub's every 2 months. TBB Energy Hub's advantage is iOS requirement (13.0 vs 15.1). 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.

TBB Energy Hub ships an update every 2 months, E3 Connect every 3 weeks. The most recent releases landed on October 22, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | TBB Energy Hub | E3 Connect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tbb-energy-hub/id6443886412/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 64 MB | 37 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TBB Power Co., Ltd](https://appshunter.io/developer/1089239531) | [Solomon Consulting Group, LLC](https://appshunter.io/developer/1850192231) |

## What reviewers say

### TBB Energy Hub

[App page](https://appshunter.io/ios/app/tbb-energy-hub/id6443886412)

Monitor your Energy Hub system devices in real time. Track battery status, voltage, and current for the past 12 hours. Optimize charging based on inverter and generator settings.

**Highlights:** Real-time device status, 12-hour battery SOC history, Battery voltage and current data, Optimized charging settings, Inverter and generator configuration

**Features:** macOS Compatibility

**In-app purchases:** none


### E3 Connect

[App page](https://appshunter.io/ios/app/e3-connect/id6754805901)

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

**In-app purchases:** none


## Frequently asked questions

### Is TBB Energy Hub free?

TBB Energy Hub is free to download, with no in-app purchases.

### Is E3 Connect free?

E3 Connect is free to download, with no in-app purchases.

### Do TBB Energy Hub or E3 Connect have ads?

Neither TBB Energy Hub nor E3 Connect shows ads.

### Which is updated more often, TBB Energy Hub or E3 Connect?

TBB Energy Hub ships an update every 2 months, and E3 Connect every 3 weeks. Most recently, TBB Energy Hub was updated on October 22, 2026 and E3 Connect 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.*