# SEM vs Viewer for Frigate

The clearest difference is review sentiment: Viewer for Frigate at 100% against SEM's 38%. Viewer for Frigate also leads on rating (4.3 vs 3.4). SEM's advantage is in-app purchases (none vs 5) and update cadence (every 2 weeks vs monthly). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Viewer for Frigate sells 5 one-off in-app purchases. SEM asks for nothing beyond the download.

Viewer for Frigate holds the better App Store score, 4.3 against 3.4. Both are backed by a comparable volume of ratings — 11 and 9 respectively. Written reviews point the same way: 38% of SEM's written reviews are positive against 100% of Viewer for Frigate's.

SEM ships an update every 2 weeks, Viewer for Frigate monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | SEM | Viewer for Frigate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (11 ratings)](https://appshunter.io/ios/app/sem-meter/id6468902139/reviews) | **[4.3 (9 ratings)](https://appshunter.io/ios/app/viewer-for-frigate/id6760414150/reviews)** |
| Number of ratings | **11** | 9 |
| Positive reviews | 37.5% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 31 MB | 37 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Dashi Wisdom Technology Co., Ltd.](https://appshunter.io/developer/1822219570) | [Szymon Piwowarczyk](https://appshunter.io/developer/1884342494) |

## What reviewers say

### SEM

[App page](https://appshunter.io/ios/app/sem-meter/id6468902139)

This utility app monitors your household power consumption in real-time, providing historical data and comparisons to help you save on electricity bills. It supports managing multiple devices and customizing electricity fee calculations.

**Highlights:** Real-time power usage monitoring, Historical energy use tracking, Second-to-second, day-to-day, week-to-week, month-to-month, and year-to-year comparisons, Electricity fee gradient calculation, Customizable fee templates, Multiple device management

**In-app purchases:** none


### Viewer for Frigate

[App page](https://appshunter.io/ios/app/viewer-for-frigate/id6760414150)

This unofficial app allows Frigate NVR server owners to easily browse, view, and manage camera event clips. It offers live previews, event filtering, clip management, and integration with Home Assistant for advanced notifications.

**Highlights:** Live camera previews, Event list with filters, Snapshot and clip viewing, Event deletion and retention, Multiple server support, Home Assistant integration

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A coffee for the app creator | $2.99 | one-time |
| A medium coffee for the app creator | $5.99 | one-time |
| Multiple Server Support | $6.99 | one-time |
| Unlimited Automations | $6.99 | one-time |
| A large coffee for the app creator | $12.99 | one-time |


## Frequently asked questions

### Is SEM free?

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

### Is Viewer for Frigate free?

Viewer for Frigate is free to download, with in-app purchases available.

### Which has better reviews, SEM or Viewer for Frigate?

Viewer for Frigate is rated higher. SEM averages 3.4 out of 5 from 11 ratings, while Viewer for Frigate averages 4.3 from 9 ratings.

### Do SEM or Viewer for Frigate have ads?

Neither SEM nor Viewer for Frigate shows ads.

### Which is updated more often, SEM or Viewer for Frigate?

SEM ships an update every 2 weeks, and Viewer for Frigate monthly. Most recently, SEM was updated on October 24, 2026 and Viewer for Frigate on October 24, 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.*