# Shellie vs OBDify

The clearest difference is in-app purchases: Shellie at none against OBDify's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. OBDify sells 4 in-app purchases, starting at $4.99 per 7 days. Shellie asks for nothing beyond the download.

Shellie ships an update every 2 days, OBDify every 4 days. The most recent releases landed on September 30, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Shellie | OBDify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shellie/id6753881676/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 days |
| Monetization | Free | — |
| Size | 3 MB | 19 MB |
| Requires iOS | 18.2 | 18.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Peter Walker](https://appshunter.io/developer/1845456015) | [Oleksandr Zhuryk](https://appshunter.io/developer/1892968311) |

## What reviewers say

### Shellie

[App page](https://appshunter.io/ios/app/shellie/id6753881676)

This utility app assists RV owners in leveling their vehicles. It provides a simple interface to ensure your RV is perfectly balanced for comfort and stability.

**Highlights:** RV leveling assistance, Vehicle balancing, Simple interface, Designed for Winnebago Travato

**Features:** macOS Compatibility

**In-app purchases:** none


### OBDify

[App page](https://appshunter.io/ios/app/obdify-obd2-car-scanner/id6762113465)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OBDify Premium | $4.99 | per 7 days |
| OBDify Pro | $9.99 | per month |
| OBDify Premium | $59.99 | per year |
| Lifetime Diagnostics | $19.99 | one-time |


## Frequently asked questions

### Is Shellie free?

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

### Is OBDify free?

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

### Do Shellie or OBDify have ads?

Neither Shellie nor OBDify shows ads.

### Which is updated more often, Shellie or OBDify?

Shellie ships an update every 2 days, and OBDify every 4 days. Most recently, Shellie was updated on September 30, 2026 and OBDify on October 9, 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.*