# iOBD2 vs One Time Password

The clearest difference is rating: iOBD2 at 4.0 against One Time Password's 2.0. iOBD2 also leads on in-app purchases (none vs 3) and update cadence (every 3 months vs every 118 months). On price, ads and device support there is nothing between them.

Both are free to download. One Time Password sells 3 in-app purchases, starting at $14.99 per year. iOBD2 asks for nothing beyond the download.

iOBD2 holds the better App Store score, 4.0 against 2.0. Both are backed by a comparable volume of ratings — 19 and 4 respectively. Written reviews point the same way: 29% of iOBD2's written reviews are positive against 0% of One Time Password's.

iOBD2 ships an update every 3 months, One Time Password every 118 months. The most recent releases landed on October 20, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | iOBD2 | One Time Password |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (19 ratings)](https://appshunter.io/ios/app/iobd2-dtc/id710380105/reviews)** | [2.0 (4 ratings)](https://appshunter.io/ios/app/one-time-password-2fa-vault/id1150502006/reviews) |
| Number of ratings | **19** | 4 |
| Positive reviews | **28.6% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 118 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 44 MB | 12 MB |
| Requires iOS | **4.3** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [翔宇 金](https://appshunter.io/developer/528881861) | [Nattapon Kittisuphat](https://appshunter.io/developer/1112583260) |

## What reviewers say

### iOBD2

[App page](https://appshunter.io/ios/app/iobd2-dtc/id710380105)

This app serves as a reference for standard Diagnostic Trouble Codes (DTCs) found in vehicles. It helps users understand fault codes generated by a car's onboard computer, aiding in problem diagnosis.

**Highlights:** Diagnostic Trouble Code reference, Fault code lookup, Vehicle system diagnostics, Problem identification

**Features:** macOS Compatibility

**In-app purchases:** none


### One Time Password

[App page](https://appshunter.io/ios/app/one-time-password-2fa-vault/id1150502006)

This app provides a secure and simple way to store confidential login information for websites and email platforms. It utilizes Touch ID or a passcode for device owner validation, ensuring your data is protected.

**Highlights:** Securely stores login credentials, Uses Touch ID for validation, Passcode as an alternative to Touch ID, Simple and nice design, Protects confidential information

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Pro | $14.99 | per year |
| Remove Banner | $2.99 | one-time |
| Lifetime Pro | $29.99 | one-time |


## Frequently asked questions

### Is iOBD2 free?

iOBD2 is free to download, with no in-app purchases.

### Is One Time Password free?

One Time Password is free to download, with in-app purchases available.

### Which has better reviews, iOBD2 or One Time Password?

iOBD2 is rated higher. iOBD2 averages 4.0 out of 5 from 19 ratings, while One Time Password averages 2.0 from 4 ratings.

### Do iOBD2 or One Time Password have ads?

Neither iOBD2 nor One Time Password shows ads.

### Which is updated more often, iOBD2 or One Time Password?

iOBD2 ships an update every 3 months, and One Time Password every 118 months. Most recently, iOBD2 was updated on October 20, 2026 and One Time Password on October 9, 2026.

---

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