# OBD2 Scanner + Engine Sound vs ReminDIY

The clearest difference is rating: ReminDIY at 5.0 against OBD2 Scanner + Engine Sound's 4.0. ReminDIY also leads on in-app purchases (none vs 2) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. OBD2 Scanner + Engine Sound sells 2 one-off in-app purchases. ReminDIY asks for nothing beyond the download.

ReminDIY holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

OBD2 Scanner + Engine Sound ships an update every 9 days, ReminDIY every 3 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OBD2 Scanner + Engine Sound | ReminDIY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/obd2-scanner-plus-engine-sound/id6789023964/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/remindiy/id6816779966/reviews)** |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Every 3 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 6 MB | 43 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sena Takasawa](https://appshunter.io/developer/1887478690) | [Mother Road Innovations, LLC](https://appshunter.io/developer/6816779968) |

## What reviewers say

### OBD2 Scanner + Engine Sound

[App page](https://appshunter.io/ios/app/obd2-scanner-plus-engine-sound/id6789023964)

Monitor your car's engine performance and hear its sound in real-time. Customize your dashboard with various widgets and track your drives with detailed maps and trip data. Offers a demo mode and optional Pro features for an enhanced experience.

**Highlights:** Real-time OBD2 data display, Engine sound simulation based on RPM, Customizable dashboard with widgets, Trip computer and fuel economy tracking, Speed and RPM on map view, HUD mode for windshield projection

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| car_ui Pro (One-Time) | $4.99 | one-time |


### ReminDIY

[App page](https://appshunter.io/ios/app/remindiy/id6816779966)

This app helps you track and manage maintenance for your home, vehicles, and equipment. It calculates needs based on usage like mileage or time, stores service history, and provides reminders. It works offline and offers automatic backups.

**Highlights:** Usage-based maintenance tracking (mileage, hours, time), Stores maintenance history, parts, receipts, and manuals, Fuel log and economy tracking, Customizable maintenance reminders, Offline functionality, Automatic backups and data export

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OBD2 Scanner + Engine Sound free?

OBD2 Scanner + Engine Sound is free to download, with in-app purchases available.

### Is ReminDIY free?

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

### Which has better reviews, OBD2 Scanner + Engine Sound or ReminDIY?

ReminDIY is rated higher. OBD2 Scanner + Engine Sound averages 4.0 out of 5 from 1 ratings, while ReminDIY averages 5.0 from 4 ratings.

### Do OBD2 Scanner + Engine Sound or ReminDIY have ads?

OBD2 Scanner + Engine Sound shows ads; ReminDIY does not.

### Which is updated more often, OBD2 Scanner + Engine Sound or ReminDIY?

OBD2 Scanner + Engine Sound ships an update every 9 days, and ReminDIY every 3 days. Most recently, OBD2 Scanner + Engine Sound was updated on October 28, 2026 and ReminDIY on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*