# SECTRON WiFi Key vs Appliance Unit Meter

The clearest difference is update cadence: SECTRON WiFi Key at every 8 days against Appliance Unit Meter's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

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

SECTRON WiFi Key ships an update every 8 days, Appliance Unit Meter every 4 months. The most recent releases landed on October 27, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | SECTRON WiFi Key | Appliance Unit Meter |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 4 months |
| Monetization | — | Free |
| Size | 2 MB | 5 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SECTRON s.r.o.](https://appshunter.io/developer/1448669971) | [Ihsan Ullah](https://appshunter.io/developer/1488089071) |

## What reviewers say

### SECTRON WiFi Key

[App page](https://appshunter.io/ios/app/sectron-wifi-key/id1597735336)

**Features:** macOS Compatibility

**In-app purchases:** none


### Appliance Unit Meter

[App page](https://appshunter.io/ios/app/appliance-unit-meter/id1613668653)

Calculate your monthly electricity bill by inputting appliance wattage, quantity, and usage time. Set your per-unit electricity price and GST to get an accurate estimate.

**Highlights:** Calculate electricity bills, Input appliance wattage, Set usage time, Configure per-unit price, Add GST, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is SECTRON WiFi Key free?

SECTRON WiFi Key is free to download, with no in-app purchases.

### Is Appliance Unit Meter free?

Appliance Unit Meter is free to download, with no in-app purchases.

### Do SECTRON WiFi Key or Appliance Unit Meter have ads?

Neither SECTRON WiFi Key nor Appliance Unit Meter shows ads.

### Which is updated more often, SECTRON WiFi Key or Appliance Unit Meter?

SECTRON WiFi Key ships an update every 8 days, and Appliance Unit Meter every 4 months. Most recently, SECTRON WiFi Key was updated on October 27, 2026 and Appliance Unit Meter on October 20, 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.*