# TA Hours vs OBD Quest

The clearest difference is rating: OBD Quest at 5.0 against TA Hours's 3.5. OBD Quest also leads on update cadence (every 3 weeks vs every 41 months). TA Hours's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, ratings volume, device support and iOS requirement there is nothing between them.

Both are free to download. OBD Quest sells 3 in-app purchases, starting at $9.99 per month. TA Hours asks for nothing beyond the download.

OBD Quest holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

TA Hours ships an update every 41 months, OBD Quest every 3 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | TA Hours | OBD Quest |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (2 ratings)](https://appshunter.io/ios/app/ta-hours/id1586371397/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/obd-quest/id6496854120/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 41 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 54 MB |
| Requires iOS | 15.6 | **14.0.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Artem Karpovych](https://appshunter.io/developer/1469350974) | [Shop Booster Ltd](https://appshunter.io/developer/1741157179) |

## What reviewers say

### TA Hours

[App page](https://appshunter.io/ios/app/ta-hours/id1586371397)

Easily track your TA hours for each class and submit them directly to your professor for approval. This app helps teaching assistants manage their work time, ensuring accurate payment for their efforts.

**Highlights:** Track TA hours per class, Submit hours to professor, Manage work time, Ensure accurate payment, University TA support

**Features:** macOS Compatibility

**In-app purchases:** none


### OBD Quest

[App page](https://appshunter.io/ios/app/obd-quest/id6496854120)

Decode and understand car diagnostic trouble codes with this comprehensive interpreter. It provides detailed insights into fault codes, potential causes, and repair recommendations, complementing your existing OBD2 scanning tools. Access a vast database of codes across multiple languages and car brands to diagnose issues with confidence.

**Highlights:** Interpretation of over 85,000 OBD2 codes, Multilingual support (English, French, Italian, German, Portuguese, Spanish), Extensive coverage across auto makes and brands, Detailed insights for each code search, Unlimited code searches, AI-powered code interpretation

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro Plan | $9.99 | per month |
| Yearly Pro Plan | $99.99 | per year |
| Pro Plan for 3 days only | $0.99 | one-time |


## Frequently asked questions

### Is TA Hours free?

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

### Is OBD Quest free?

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

### Which has better reviews, TA Hours or OBD Quest?

OBD Quest is rated higher. TA Hours averages 3.5 out of 5 from 2 ratings, while OBD Quest averages 5.0 from 1 ratings.

### Do TA Hours or OBD Quest have ads?

OBD Quest shows ads; TA Hours does not.

### Which is updated more often, TA Hours or OBD Quest?

TA Hours ships an update every 41 months, and OBD Quest every 3 weeks. Most recently, TA Hours was updated on November 3, 2026 and OBD Quest on November 4, 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.*