# Ultimate Diesel Builders Guide vs Tinker DIY

The clearest difference is in-app purchases: Tinker DIY at none against Ultimate Diesel Builders Guide's 12. Tinker DIY also leads on ratings volume (2K vs 8) and update cadence (every 3 weeks vs every 3 months). Ultimate Diesel Builders Guide's advantage is iOS requirement (10.0 vs 15.1). On price, rating, ads and device support there is nothing between them.

Both are free to download. Ultimate Diesel Builders Guide sells 12 in-app purchases, starting at $7.99 per 6 months. Tinker DIY asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Ultimate Diesel Builders Guide against 4.7 for Tinker DIY. That said, the two scores are not equally well evidenced: Tinker DIY has 2K ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 33% of Ultimate Diesel Builders Guide's written reviews are positive against 45% of Tinker DIY's.

Ultimate Diesel Builders Guide ships an update every 3 months, Tinker DIY every 3 weeks. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Ultimate Diesel Builders Guide | Tinker DIY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (8 ratings)](https://appshunter.io/ios/app/ultimate-diesel-builders-guide/id633616911/reviews)** | [4.7 (2K ratings)](https://appshunter.io/ios/app/tinker-diy/id6466501155/reviews) |
| Number of ratings | 8 | **2K** |
| Positive reviews | 33.3% of reviews | **45.1% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 39 MB | 116 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Engaged Media Inc.](https://appshunter.io/developer/1456235175) | [Glocal development LLC](https://appshunter.io/developer/1688277654) |

## What reviewers say

### Ultimate Diesel Builders Guide

[App page](https://appshunter.io/ios/app/ultimate-diesel-builders-guide/id633616911)

This digital magazine provides expert tips and tricks for building powerful, fuel-efficient diesel trucks. Discover the latest parts and technology to enhance your vehicle's performance and towing capabilities.

**Highlights:** Diesel truck building tips and tricks, Performance and fuel economy advice, Towing performance enhancement, Truck parts shopping guide, Latest power products and technology, Digital magazine subscription

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ultimate Diesel Builder's Guide | $7.99 | per 6 months |
| Ultimate Diesel Builder's Guide Auto-Renewable Subscription | $12.99 | per year |
| Ultimate Diesel Builder's Guide | $12.99 | per year |
| UDBG 2012 Ultimate Diesel ... | $3.99 | one-time |
| UDBG 2013 Ultimate Diesel ... | $3.99 | one-time |
| FALL 2013 Ultimate Diesel ... | $3.99 | one-time |
| August/September 2014 | $3.99 | one-time |
| February-March 2014 | $3.99 | one-time |
| October/November 2014 | $3.99 | one-time |
| April-May 2014 | $5.99 | one-time |
| December-January 2017 | $5.99 | one-time |
| Ultimate Diesel Builder's Guide 4 Back Issue Bundle | $9.99 | one-time |


### Tinker DIY

[App page](https://appshunter.io/ios/app/tinker-diy/id6466501155)

Instantly connect with certified automotive experts through live video chat for car repair help, pre-purchase inspections, or rideshare vehicle safety checks. Get professional guidance for buying, selling, or maintaining your vehicle.

**Highlights:** Live video chat with experts, Rideshare inspection, Turo annual safety inspection, Used car buying/selling guidance, Real-time car repair assistance, ASE-certified mechanics

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

**In-app purchases:** none

**What reviewers like**

- 👍 Great service
- 🚀 Quick and easy
- 💰 Saved money
- 🔧 Helpful mechanics
- 🤖 Useful for DIY

**What reviewers complain about**

- 🔒 Requires personal information
- 💰 Expensive pricing
- 🐛 App doesn't work
- 🤷‍♂️ Unhelpful mechanics
- 🚫 Limited car support

**Reported bugs**

- Login/signup issues
- App crashes or freezes
- Disconnected calls not refunded

**Requested features**

- Add support for motorcycles
- Allow searching for brand-specific mechanics
- Improve communication with expert applicants


## Frequently asked questions

### Is Ultimate Diesel Builders Guide free?

Ultimate Diesel Builders Guide is free to download, with in-app purchases available.

### Is Tinker DIY free?

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

### Which has better reviews, Ultimate Diesel Builders Guide or Tinker DIY?

Ultimate Diesel Builders Guide is rated higher. Ultimate Diesel Builders Guide averages 4.9 out of 5 from 8 ratings, while Tinker DIY averages 4.7 from 2K ratings.

### Do Ultimate Diesel Builders Guide or Tinker DIY have ads?

Neither Ultimate Diesel Builders Guide nor Tinker DIY shows ads.

### Which is updated more often, Ultimate Diesel Builders Guide or Tinker DIY?

Ultimate Diesel Builders Guide ships an update every 3 months, and Tinker DIY every 3 weeks. Most recently, Ultimate Diesel Builders Guide was updated on October 29, 2026 and Tinker DIY on October 30, 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.*