# Stem PowerTrack vs Unity by Power Factors

The clearest difference is rating: Unity by Power Factors at 5.0 against Stem PowerTrack's 3.1. Unity by Power Factors also leads on update cadence (every 3 weeks vs every 3 months). Stem PowerTrack's advantage is ratings volume (42 vs 1) and device support (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Unity by Power Factors holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Stem PowerTrack has 42 ratings behind it against 1, so its average is the more settled of the two.

Stem PowerTrack ships an update every 3 months, Unity by Power Factors every 3 weeks. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Stem PowerTrack | Unity by Power Factors |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (42 ratings)](https://appshunter.io/ios/app/stem-powertrack/id1187980669/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/unity-by-power-factors/id6762287120/reviews)** |
| Number of ratings | **42** | 1 |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 6 MB | 118 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Also Energy, Inc.](https://appshunter.io/developer/464697387) | [Power Factors LLC](https://appshunter.io/developer/1460037851) |

## What reviewers say

### Stem PowerTrack

[App page](https://appshunter.io/ios/app/stem-powertrack/id1187980669)

Monitor and analyze solar PV projects and energy systems remotely. Site owners can view data and forecasts, while technicians can diagnose and fix issues on-site using their mobile devices.

**Highlights:** Site overview with easy-to-read data, In-depth site data analysis via charts, Current weather and forecast for sites, Detailed hardware technical information, Fast hardware alerts and error detection

**Features:** macOS Compatibility

**In-app purchases:** none


### Unity by Power Factors

[App page](https://appshunter.io/ios/app/unity-by-power-factors/id6762287120)

Monitor and manage renewable energy assets like solar, wind, and BESS portfolios from your mobile device. Quickly assess fleet health, triage events, and receive AI-generated site summaries for efficient performance management.

**Highlights:** Fleet health overview, Drill down to site and device, Event triage by energy loss, AI-generated site summaries, Weather and operational data comparison, Secure SSO login

**In-app purchases:** none


## Frequently asked questions

### Is Stem PowerTrack free?

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

### Is Unity by Power Factors free?

Unity by Power Factors is free to download, with no in-app purchases.

### Which has better reviews, Stem PowerTrack or Unity by Power Factors?

Unity by Power Factors is rated higher. Stem PowerTrack averages 3.1 out of 5 from 42 ratings, while Unity by Power Factors averages 5.0 from 1 ratings.

### Do Stem PowerTrack or Unity by Power Factors have ads?

Neither Stem PowerTrack nor Unity by Power Factors shows ads.

### Which is updated more often, Stem PowerTrack or Unity by Power Factors?

Stem PowerTrack ships an update every 3 months, and Unity by Power Factors every 3 weeks. Most recently, Stem PowerTrack was updated on November 2, 2026 and Unity by Power Factors on October 31, 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.*