# R+ ENGINEER vs Let’s MODI

The clearest difference is update cadence: Let’s MODI at monthly against R+ ENGINEER's every 4 months. R+ ENGINEER's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

R+ ENGINEER ships an update every 4 months, Let’s MODI monthly. The most recent releases landed on June 1, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | R+ ENGINEER | Let’s MODI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/r-plus-engineer/id1475713920/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | — |
| Size | 116 MB | 68 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ROBOTIS CO., LTD.](https://appshunter.io/developer/948481761) | [LUXROBO Co., Ltd.](https://appshunter.io/developer/1234957400) |

## What reviewers say

### R+ ENGINEER

[App page](https://appshunter.io/ios/app/r-plus-engineer/id1475713920)

This application connects to a smart device kit, enabling the use of sensors, video, and audio processing. It offers simple programming to control and manipulate the connected hardware, making it an interactive educational tool.

**Highlights:** Connects to ROBOTIS ENGINEER Kit, Utilizes smart device sensors, Supports video/image processing, Enables audio input/output, Intuitive programming interface, Control and manipulate hardware

**Features:** macOS Compatibility

**In-app purchases:** none


### Let’s MODI

[App page](https://appshunter.io/ios/app/lets-modi/id6443715792)

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

**In-app purchases:** none


## Frequently asked questions

### Is R+ ENGINEER free?

R+ ENGINEER is free to download, with no in-app purchases.

### Is Let’s MODI free?

Let’s MODI is free to download, with no in-app purchases.

### Do R+ ENGINEER or Let’s MODI have ads?

Neither R+ ENGINEER nor Let’s MODI shows ads.

### Which is updated more often, R+ ENGINEER or Let’s MODI?

R+ ENGINEER ships an update every 4 months, and Let’s MODI monthly. Most recently, R+ ENGINEER was updated on June 1, 2026 and Let’s MODI on September 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.*