# Electrical Calculations vs DBT Timer

The clearest difference is in-app purchases: DBT Timer at none against Electrical Calculations's 3. DBT Timer also leads on ads (none vs shown). Electrical Calculations's advantage is update cadence (every 3 weeks vs every 5 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Electrical Calculations sells 3 in-app purchases, starting at $3.99 per 3 months. DBT Timer asks for nothing beyond the download.

Electrical Calculations ships an update every 3 weeks, DBT Timer every 5 months. The most recent releases landed on September 25, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Electrical Calculations | DBT Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (126 ratings)](https://appshunter.io/ios/app/electrical-calculations/id993232048/reviews)** | — |
| Number of ratings | **126** | — |
| Positive reviews | 86.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 56 MB | 39 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Egal Net di Ettore Gallina](https://appshunter.io/developer/993232047) | [ABB Information Systems AG](https://appshunter.io/developer/1026885389) |

## What reviewers say

### Electrical Calculations

[App page](https://appshunter.io/ios/app/electrical-calculations/id993232048)

This app provides a comprehensive suite of electrical calculations for professionals. It supports various international standards and offers detailed reports in PDF format. The tool covers wiring, power, motor, and electronic calculations, along with extensive conversion tables and resources.

**Highlights:** Wire size and voltage drop calculations, Power, current, and resistance calculations, Motor performance and connection diagrams, Electronic component calculations, Extensive unit conversions, PDF report generation, Support for IEC, CEI, NEC, CEC standards

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Version (3 months) | $3.99 | per 3 months |
| PRO Version (1 year) | $7.49 | per year |
| PRO Version (Lifetime) | $89.99 | one-time |


### DBT Timer

[App page](https://appshunter.io/ios/app/dbt-timer/id1510733700)

**In-app purchases:** none


## Frequently asked questions

### Is Electrical Calculations free?

Electrical Calculations is free to download, with in-app purchases available.

### Is DBT Timer free?

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

### Do Electrical Calculations or DBT Timer have ads?

Electrical Calculations shows ads; DBT Timer does not.

### Which is updated more often, Electrical Calculations or DBT Timer?

Electrical Calculations ships an update every 3 weeks, and DBT Timer every 5 months. Most recently, Electrical Calculations was updated on September 25, 2026 and DBT Timer on September 9, 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.*