# Sonnen Buddy vs E

The clearest difference is review sentiment: Sonnen Buddy at 100% against E's 0%. Sonnen Buddy also leads on rating (5.0 vs 1.0). E's advantage is in-app purchases (none vs 2) and iOS requirement (14.0 vs 16.4). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Sonnen Buddy sells 2 in-app purchases, starting at $2.99 per month. E asks for nothing beyond the download.

Sonnen Buddy holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 100% of Sonnen Buddy's written reviews are positive against 0% of E's.

Sonnen Buddy ships an update every 10 days, E every 2 weeks. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Sonnen Buddy | E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sonnen-buddy/id1627198189/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/e-power-go/id6444183900/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 weeks |
| Monetization | Freemium | **Free** |
| Size | 58 MB | 76 MB |
| Requires iOS | 16.4 | **14.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Andersen](https://appshunter.io/developer/1627198191) | [Shenzhen Topband Battery Co., Ltd](https://appshunter.io/developer/1652857769) |

## What reviewers say

### Sonnen Buddy

[App page](https://appshunter.io/ios/app/sonnen-buddy/id1627198189)

Monitor your home energy system in real-time, including PV panels, battery, and inverter utilization. Easily adjust system configurations like charge events and operating modes directly from your mobile device.

**Highlights:** Real-time energy flow view, PV panel, battery, and inverter utilization, System configuration adjustments, Charge event scheduling, Operating mode changes, Weather forecast charge management

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sonnen Buddy Premium | $2.99 | per month |
| Sonnen Buddy Premium | $22.99 | per year |


### E

[App page](https://appshunter.io/ios/app/e-power-go/id6444183900)

Manage your power station's storage system with this app. Monitor equipment, view operational data, and handle faults remotely. Connect via Bluetooth or Wi-Fi for real-time insights and efficient management.

**Highlights:** Power station monitoring, Equipment information, Operation data inquiry, Alarm management, Bluetooth and Wi-Fi connection, Remote firmware upgrade

**In-app purchases:** none


## Frequently asked questions

### Is Sonnen Buddy free?

Sonnen Buddy is free to download, with in-app purchases available.

### Is E free?

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

### Which has better reviews, Sonnen Buddy or E?

Sonnen Buddy is rated higher. Sonnen Buddy averages 5.0 out of 5 from 1 ratings, while E averages 1.0 from 2 ratings.

### Do Sonnen Buddy or E have ads?

Neither Sonnen Buddy nor E shows ads.

### Which is updated more often, Sonnen Buddy or E?

Sonnen Buddy ships an update every 10 days, and E every 2 weeks. Most recently, Sonnen Buddy was updated on October 24, 2026 and E on October 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.*