# SolarEMS vs YaWatt

SolarEMS and YaWatt are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

SolarEMS ships an update every 3 weeks, YaWatt fortnightly. The most recent releases landed on September 24, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | SolarEMS | YaWatt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/solarems/id6448979521/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 89 MB | 49 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [少神 劳](https://appshunter.io/developer/1687217918) | [Xingxue Chen](https://appshunter.io/developer/1840345077) |

## What reviewers say

### SolarEMS

[App page](https://appshunter.io/ios/app/solarems/id6448979521)

This application provides services for energy storage monitoring and data statistics. It offers a platform to track and analyze energy storage performance. Designed for efficient data management.

**Highlights:** Energy storage monitoring, Data statistics, Performance analysis, Efficient data management

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

**In-app purchases:** none


### YaWatt

[App page](https://appshunter.io/ios/app/yawatt/id6756919027)

**In-app purchases:** none


## Frequently asked questions

### Is SolarEMS free?

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

### Is YaWatt free?

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

### Do SolarEMS or YaWatt have ads?

Neither SolarEMS nor YaWatt shows ads.

### Which is updated more often, SolarEMS or YaWatt?

SolarEMS ships an update every 3 weeks, and YaWatt fortnightly. Most recently, SolarEMS was updated on September 24, 2026 and YaWatt on September 12, 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.*