# QDMS Wiki vs Electrical Tools & Reference

The clearest difference is in-app purchases: QDMS Wiki at none against Electrical Tools & Reference's 2. Electrical Tools & Reference's advantage is update cadence (every 3 weeks vs every 4 months) and iOS requirement (12.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Electrical Tools & Reference sells 2 in-app purchases, starting at $2.99 per month. QDMS Wiki asks for nothing beyond the download.

QDMS Wiki ships an update every 4 months, Electrical Tools & Reference every 3 weeks. Both last shipped on October 30, 2026.

## The numbers

| Metric | QDMS Wiki | Electrical Tools & Reference |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (31 ratings)](https://appshunter.io/ios/app/electrical-tools-and-reference/id6746714702/reviews)** |
| Number of ratings | — | **31** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 35 MB | 88 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [MariApps Marine Solutions Pvt. Ltd.](https://appshunter.io/developer/1040404561) | [Ashvin Kevadiya](https://appshunter.io/developer/1756324971) |

## What reviewers say

### QDMS Wiki

[App page](https://appshunter.io/ios/app/qdms-wiki-hospitality-services/id6470706743)

**In-app purchases:** none


### Electrical Tools & Reference

[App page](https://appshunter.io/ios/app/electrical-tools-and-reference/id6746714702)

Master electrical concepts, circuits, and wiring with this comprehensive app. It offers detailed diagrams, essential tools, and clear explanations for students, apprentices, and professionals. Learn theory, practice with quizzes, and access a symbol library for real-world electrical work.

**Highlights:** Electrical theory basics, Interactive wiring diagrams, Built-in electrical calculators, Schematic symbols library, Quizzes and electrical tests, Real-world explanations

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Lifetime Premium | $3.99 | one-time |


## Frequently asked questions

### Is QDMS Wiki free?

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

### Is Electrical Tools & Reference free?

Electrical Tools & Reference is free to download, with in-app purchases available.

### Do QDMS Wiki or Electrical Tools & Reference have ads?

Neither QDMS Wiki nor Electrical Tools & Reference shows ads.

### Which is updated more often, QDMS Wiki or Electrical Tools & Reference?

QDMS Wiki ships an update every 4 months, and Electrical Tools & Reference every 3 weeks. Most recently, QDMS Wiki was updated on October 30, 2026 and Electrical Tools & Reference on October 30, 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.*