# Electronics for Engineers vs TRV

The clearest difference is in-app purchases: Electronics for Engineers at none against TRV's 10. TRV's advantage is iOS requirement (13.0 vs 16.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. TRV sells 10 one-off in-app purchases. Electronics for Engineers asks for nothing beyond the download.

Electronics for Engineers ships an update every 10 months, TRV every 13 months. The most recent releases landed on September 6, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Electronics for Engineers | TRV |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 13 months |
| Size | 27 MB | 12 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Datateam Business Media Ltd](https://appshunter.io/developer/531755760) | [Roularta Media Group](https://appshunter.io/developer/398162659) |

## What reviewers say

### Electronics for Engineers

[App page](https://appshunter.io/ios/app/electronics-for-engineers/id883570948)

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

**In-app purchases:** none


### TRV

[App page](https://appshunter.io/ios/app/trv-rps/id1008785200)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TRV-RPS 15-05-2022 | $39.99 | one-time |
| TRV-RPS 01-07-2022 | $39.99 | one-time |
| TRV-RPS 15-05-2023 | $39.99 | one-time |
| TRV-RPS 01-04-2023 | $39.99 | one-time |
| TRV-RPS 15-02-2023 | $39.99 | one-time |
| TRV-RPS 31-12-2023 | $39.99 | one-time |
| TRV-RPS 01-07-2023 | $39.99 | one-time |
| TRV-RPS 15-08-2023 | $39.99 | one-time |
| TRV-RPS 15-11-2023 | $39.99 | one-time |
| TRV-RPS 01-10-2023 | $39.99 | one-time |


## Frequently asked questions

### Is Electronics for Engineers free?

Electronics for Engineers is free to download, with no in-app purchases.

### Is TRV free?

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

### Do Electronics for Engineers or TRV have ads?

Neither Electronics for Engineers nor TRV shows ads.

### Which is updated more often, Electronics for Engineers or TRV?

Electronics for Engineers ships an update every 10 months, and TRV every 13 months. Most recently, Electronics for Engineers was updated on September 6, 2026 and TRV on May 17, 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.*