# Energy Meter vs E

The clearest difference is review sentiment: Energy Meter at 86% against E's 25%. E's advantage is price (Free vs $3.99). On update cadence, ads, in-app purchases and device support there is nothing between them.

E is free to download; Energy Meter costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Energy Meter ships an update every 6 months, E every 8 months. The most recent releases landed on September 25, 2026 and July 8, 2026 respectively.

## The numbers

| Metric | Energy Meter | E |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/e-14-20/id6469003886/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **86.3% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 8 months |
| Monetization | Paid | **Free** |
| Size | 7 MB | 14 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Heiko Pruessing](https://appshunter.io/developer/989638671) | [Rohloff AG](https://appshunter.io/developer/1711238879) |

## What reviewers say

### Energy Meter

[App page](https://appshunter.io/ios/app/energy-meter/id989638672)

Monitor your SMA solar plant and identify energy wasters with real-time data. Connect locally to your PV system for instant insights into power grid performance and individual device readings.

**Highlights:** Monitor SMA Energy Meter real-time data, Supports SMA inverters via MODBUS, Automatic local network device detection, Energy flow display, Consumption measurement, Individual phase view, Collect values into charts

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

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-14-20/id6469003886)

Control your e-bike's electronic shifting system with this app. It synchronizes drive and shifting for fast, efficient gear changes, offering features like auto-downshift and multi-shift. Customize settings and access service functions for your e-bike.

**Highlights:** eShift with Bosch Smart System, Synchronized drive and shifting, Auto-Downshift customization, Invertable shifting direction, Multishift control, Service functions (calibration, diagnostics, updates)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Energy Meter free?

Energy Meter costs $3.99, with no in-app purchases.

### Is E free?

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

### Do Energy Meter or E have ads?

Neither Energy Meter nor E shows ads.

### Which is updated more often, Energy Meter or E?

Energy Meter ships an update every 6 months, and E every 8 months. Most recently, Energy Meter was updated on September 25, 2026 and E on July 8, 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.*