# tec2SKILL Smart Maintenance vs 18th Edition Wiring Regs Prep

The clearest difference is in-app purchases: tec2SKILL Smart Maintenance at none against 18th Edition Wiring Regs Prep's 3. tec2SKILL Smart Maintenance also leads on iOS requirement (15.0 vs 17.0). 18th Edition Wiring Regs Prep's advantage is update cadence (every 3 months vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. 18th Edition Wiring Regs Prep sells 3 in-app purchases, starting at $4.99 per month. tec2SKILL Smart Maintenance asks for nothing beyond the download.

tec2SKILL Smart Maintenance ships an update every 8 months, 18th Edition Wiring Regs Prep every 3 months. The most recent releases landed on October 29, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | tec2SKILL Smart Maintenance | 18th Edition Wiring Regs Prep |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 months** |
| Size | 524 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [ETS DIDACTIC GMBH](https://appshunter.io/developer/1209946511) | [MD Shahariar Nazim Joy](https://appshunter.io/developer/1893961943) |

## What reviewers say

### tec2SKILL Smart Maintenance

[App page](https://appshunter.io/ios/app/tec2skill-smart-maintenance/id1542007569)

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

**In-app purchases:** none


### 18th Edition Wiring Regs Prep

[App page](https://appshunter.io/ios/app/18th-edition-wiring-regs-prep/id6791223196)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $4.99 | per month |
| Yearly Pro | $14.99 | per year |
| Lifetime Access | $24.99 | one-time |


## Frequently asked questions

### Is tec2SKILL Smart Maintenance free?

tec2SKILL Smart Maintenance is free to download, with no in-app purchases.

### Is 18th Edition Wiring Regs Prep free?

18th Edition Wiring Regs Prep is free to download, with in-app purchases available.

### Do tec2SKILL Smart Maintenance or 18th Edition Wiring Regs Prep have ads?

Neither tec2SKILL Smart Maintenance nor 18th Edition Wiring Regs Prep shows ads.

### Which is updated more often, tec2SKILL Smart Maintenance or 18th Edition Wiring Regs Prep?

tec2SKILL Smart Maintenance ships an update every 8 months, and 18th Edition Wiring Regs Prep every 3 months. Most recently, tec2SKILL Smart Maintenance was updated on October 29, 2026 and 18th Edition Wiring Regs Prep on November 7, 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.*