# Length Mass Speed Converter vs E

The clearest difference is in-app purchases: E at none against Length Mass Speed Converter's 1. E also leads on ads (none vs shown) and update cadence (every 8 days vs every 4 months). Length Mass Speed Converter's advantage is iOS requirement (12.0 vs 16.0). On price and device support there is nothing between them.

Both are free to download. Length Mass Speed Converter sells 1 in-app purchase, starting at $14.99 per month. E asks for nothing beyond the download.

Length Mass Speed Converter ships an update every 4 months, E every 8 days. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Length Mass Speed Converter | E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (14 ratings)](https://appshunter.io/ios/app/length-mass-speed-converter/id1421135749/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 30 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AR Code Pte. Ltd.](https://appshunter.io/developer/1761134422) | [NGUYEN THI PHUONG](https://appshunter.io/developer/1697274598) |

## What reviewers say

### Length Mass Speed Converter

[App page](https://appshunter.io/ios/app/length-mass-speed-converter/id1421135749)

Easily convert between various units of measurement across 15 categories, including length, mass, volume, speed, and temperature. Offers a premium subscription for advanced features and an ad-free experience.

**Highlights:** Distance/length conversions, Area conversions, Volume conversions, Mass conversions, Speed conversions, Temperature conversions, 15 measurement categories

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Converter Premium | $14.99 | per month |


### E

[App page](https://appshunter.io/ios/app/e-bill-40/id6736357149)

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

**In-app purchases:** none


## Frequently asked questions

### Is Length Mass Speed Converter free?

Length Mass Speed Converter is free to download, with in-app purchases available.

### Is E free?

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

### Do Length Mass Speed Converter or E have ads?

Length Mass Speed Converter shows ads; E does not.

### Which is updated more often, Length Mass Speed Converter or E?

Length Mass Speed Converter ships an update every 4 months, and E every 8 days. Most recently, Length Mass Speed Converter was updated on October 24, 2026 and E 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.*