# E vs Fimpl

The clearest difference is in-app purchases: E at none against Fimpl's 3. E also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.6). Fimpl's advantage is update cadence (every 4 months vs every 18 months). On price and device support there is nothing between them.

Both are free to download. Fimpl sells 3 one-off in-app purchases. E asks for nothing beyond the download.

E ships an update every 18 months, Fimpl every 4 months. The most recent releases landed on September 12, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | E | Fimpl |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/e-wire-calc/id885429495/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 18 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 26 MB | 20 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ELEKTRISOLA](https://appshunter.io/developer/885429498) | [Daniel Zielinski](https://appshunter.io/developer/921365382) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-wire-calc/id885429495)

This tool helps determine technical characteristics of enamelled copper wire based on industry standards. It offers functions for diameter conversion, resistance calculations, and breakdown voltage.

**Highlights:** Diameter conversion (mm, inch, AWG), Resistance calculation, Metal wire diameter calculation, Resistance tolerance, Enamelled copper quantity and length, Breakdown voltage, Winding tension calculation, Overall diameter tolerance

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

**In-app purchases:** none


### Fimpl

[App page](https://appshunter.io/ios/app/fimpl/id921365383)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kl. Bier | $0.99 | one-time |
| Gr. Bier | $2.99 | one-time |
| Kiste Bier | $19.99 | one-time |


## Frequently asked questions

### Is E free?

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

### Is Fimpl free?

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

### Do E or Fimpl have ads?

Fimpl shows ads; E does not.

### Which is updated more often, E or Fimpl?

E ships an update every 18 months, and Fimpl every 4 months. Most recently, E was updated on September 12, 2026 and Fimpl on September 13, 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.*