# English for Devs vs Sandbox Relay

The clearest difference is in-app purchases: Sandbox Relay at none against English for Devs's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. English for Devs sells 2 in-app purchases, starting at $1.99 per month. Sandbox Relay asks for nothing beyond the download.

## The numbers

| Metric | English for Devs | Sandbox Relay |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Freemium | — |
| Size | 7 MB | 32 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Joao Victor Flores da Costa](https://appshunter.io/developer/1469303955) | [Eric Boumendil](https://appshunter.io/developer/1116493219) |

## What reviewers say

### English for Devs

[App page](https://appshunter.io/ios/app/english-for-devs-devlingo/id6759974641)

This app provides developers with essential English phrases for remote tech work, covering daily standups, code reviews, and technical discussions. Learn over 3,600 phrases across 12 categories to improve your communication confidence and career prospects.

**Highlights:** Developer-specific phrases, 12 practical categories, 3,600+ phrases, Daily learning (10 phrases), Home screen widget, Streak tracking system, 10 source languages

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Yerly Subscription | $7.99 | per year |


### Sandbox Relay

[App page](https://appshunter.io/ios/app/sandbox-relay/id6791522669)

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

**In-app purchases:** none


## Frequently asked questions

### Is English for Devs free?

English for Devs is free to download, with in-app purchases available.

### Is Sandbox Relay free?

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

### Do English for Devs or Sandbox Relay have ads?

Neither English for Devs nor Sandbox Relay shows ads.

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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.*