# Electrical Calculation Tools vs Rust Spy Smart Alarm & Tracker

The clearest difference is price: Rust Spy Smart Alarm & Tracker at Free against Electrical Calculation Tools's $1.99. Rust Spy Smart Alarm & Tracker also leads on update cadence (every 2 months vs every 5 months). Electrical Calculation Tools's advantage is in-app purchases (none vs 4) and iOS requirement (13.0 vs 18). On ads and device support there is nothing between them.

Rust Spy Smart Alarm & Tracker is free to download; Electrical Calculation Tools costs $1.99 up front. Rust Spy Smart Alarm & Tracker sells 4 in-app purchases, starting at $2.99 per 7 days. Electrical Calculation Tools asks for nothing beyond the download.

Electrical Calculation Tools ships an update every 5 months, Rust Spy Smart Alarm & Tracker every 2 months. The most recent releases landed on September 30, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Electrical Calculation Tools | Rust Spy Smart Alarm & Tracker |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.0 (2 ratings)](https://appshunter.io/ios/app/rust-spy-smart-alarm-and-tracker/id6745633599/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | — | Freemium |
| Size | 37 MB | 123 MB |
| Requires iOS | **13.0** | 18 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) | [Abdelkarime Achtaou](https://appshunter.io/developer/1861126997) |

## What reviewers say

### Electrical Calculation Tools

[App page](https://appshunter.io/ios/app/electrical-calculation-tools/id6446797237)

**Features:** macOS Compatibility

**In-app purchases:** none


### Rust Spy Smart Alarm & Tracker

[App page](https://appshunter.io/ios/app/rust-spy-smart-alarm-and-tracker/id6745633599)

This app provides player tracking and raid planning tools for the game Rust. Monitor enemy activity, predict raid windows, and manage in-game devices like alarms and turrets. It offers a free tier with basic features and a Pro subscription for advanced capabilities.

**Highlights:** Player online/offline tracking, Raid cost calculator, Clan activity monitoring, Smart base device control, Instant status alerts, Force wipe countdown

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RustSpy Pro - Weekly | $2.99 | per 7 days |
| RustSpy Pro - Monthly | $4.99 | per month |
| Raid Calculator | $1.99 | one-time |
| Smart Base Pro | $9.99 | one-time |


## Frequently asked questions

### Is Electrical Calculation Tools free?

Electrical Calculation Tools costs $1.99, with no in-app purchases.

### Is Rust Spy Smart Alarm & Tracker free?

Rust Spy Smart Alarm & Tracker is free to download, with in-app purchases available.

### Do Electrical Calculation Tools or Rust Spy Smart Alarm & Tracker have ads?

Neither Electrical Calculation Tools nor Rust Spy Smart Alarm & Tracker shows ads.

### Which is updated more often, Electrical Calculation Tools or Rust Spy Smart Alarm & Tracker?

Electrical Calculation Tools ships an update every 5 months, and Rust Spy Smart Alarm & Tracker every 2 months. Most recently, Electrical Calculation Tools was updated on September 30, 2026 and Rust Spy Smart Alarm & Tracker on October 4, 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.*