# DDTSB vs FieldHelper

The clearest difference is price: DDTSB at Free against FieldHelper's $2.99. DDTSB also leads on in-app purchases (none vs 2) and device support (3 vs 1). FieldHelper's advantage is update cadence (fortnightly vs every 7 months). On ads and iOS requirement there is nothing between them.

DDTSB is free to download; FieldHelper costs $2.99 up front. FieldHelper sells 2 in-app purchases, starting at $2.99 per month. DDTSB asks for nothing beyond the download.

DDTSB ships an update every 7 months, FieldHelper fortnightly. The most recent releases landed on September 30, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | DDTSB | FieldHelper |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ddtsb/id6740241315/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 14 MB | 35 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Elektro Partner ApS](https://appshunter.io/developer/1789123561) | [Rtfix ltd](https://appshunter.io/developer/1636109530) |

## What reviewers say

### DDTSB

[App page](https://appshunter.io/ios/app/ddtsb/id6740241315)

Access a vast database of automotive service bulletins and troubleshooting guides. Avoid common errors by leveraging solutions already found by other workshops globally. This tool provides detailed information on over 10,000 service bulletins and 400,000 error codes.

**Highlights:** 10,000+ service bulletins, 400,000+ error codes, Model-specific troubleshooting, Global mechanic community, Error explanations and experiences

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

**In-app purchases:** none


### FieldHelper

[App page](https://appshunter.io/ios/app/fieldhelper/id6755612663)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FieldHelperLevel 1–2 | $2.99 | per month |
| FieldHelper Level 3–4 | $5.99 | per month |


## Frequently asked questions

### Is DDTSB free?

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

### Is FieldHelper free?

FieldHelper costs $2.99, and also offers in-app purchases.

### Do DDTSB or FieldHelper have ads?

Neither DDTSB nor FieldHelper shows ads.

### Which is updated more often, DDTSB or FieldHelper?

DDTSB ships an update every 7 months, and FieldHelper fortnightly. Most recently, DDTSB was updated on September 30, 2026 and FieldHelper on October 5, 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.*