# IAMMETER vs S

The clearest difference is review sentiment: IAMMETER at 100% against S's 66%. On price, update cadence, ads and in-app purchases there is nothing between them.

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

IAMMETER ships an update every 6 weeks, S monthly. The most recent releases landed on October 14, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | IAMMETER | S |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (15 ratings)](https://appshunter.io/ios/app/s-miles-installer/id1544207772/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | **100.0% of reviews** | 65.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free | Free |
| Size | 12 MB | 224 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Lewei IoT Technologies Co.,Ltd.](https://appshunter.io/developer/877984904) | [Hoymiles Power Electronics Inc.](https://appshunter.io/developer/1219594358) |

## What reviewers say

### IAMMETER

[App page](https://appshunter.io/ios/app/iammeter/id1414075406)

Monitor your home's electricity consumption in real-time. Track energy flow, grid import/export, and solar PV production. Integrate with popular home automation systems.

**Highlights:** Real-time electricity usage tracking, Monitor energy flow, Solar PV system production monitoring, Grid import/export tracking, Home automation integration

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

**In-app purchases:** none


### S

[App page](https://appshunter.io/ios/app/s-miles-installer/id1544207772)

This app helps installers of distributed PV power plants manage accounts and provides visual guides for microinverter installation. It offers rapid configuration, power generation data, and detailed alarm information for commissioning and diagnostics.

**Highlights:** Account monitoring, Visual installation guide, Microinverter configuration, Power generation data, Module-level data, Alarm information, Commissioning & diagnostics

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IAMMETER free?

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

### Is S free?

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

### Do IAMMETER or S have ads?

Neither IAMMETER nor S shows ads.

### Which is updated more often, IAMMETER or S?

IAMMETER ships an update every 6 weeks, and S monthly. Most recently, IAMMETER was updated on October 14, 2026 and S 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.*