# Fi Exhaust vs Tinker DIY

The clearest difference is review sentiment: Tinker DIY at 45% against Fi Exhaust's 0%. Tinker DIY also leads on rating (4.7 vs 2.5) and ratings volume (2K vs 2). Fi Exhaust's advantage is monetization model (free vs ad-supported) and iOS requirement (8.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Tinker DIY holds the better App Store score, 4.7 against 2.5. That said, the two scores are not equally well evidenced: Tinker DIY has 2K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Fi Exhaust's written reviews are positive against 45% of Tinker DIY's.

Fi Exhaust ships an update every 2 months, Tinker DIY every 3 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Fi Exhaust | Tinker DIY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (2 ratings)](https://appshunter.io/ios/app/fi-exhaust/id1179987177/reviews) | **[4.7 (2K ratings)](https://appshunter.io/ios/app/tinker-diy/id6466501155/reviews)** |
| Number of ratings | 2 | **2K** |
| Positive reviews | 0.0% of reviews | **45.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 21 MB | 116 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Frequency Intelligent Exhaust Co. LTD](https://appshunter.io/developer/1191737344) | [Glocal development LLC](https://appshunter.io/developer/1688277654) |

## What reviewers say

### Fi Exhaust

[App page](https://appshunter.io/ios/app/fi-exhaust/id1179987177)

Control your premium automobile's exhaust system with this app. Adjust valve settings, experience different exhaust sounds, and monitor your car's status. Requires a specific OBD2 controller module.

**Highlights:** Wireless valve control (Open/Close), Adjust exhaust sound and velocity, Valvetronic exhaust system function control, Intelligent switch button control (RPM, Speed, Turbo), Monitor car status, Access Fi Exhaust information

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

**In-app purchases:** none


### 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 Fi Exhaust free?

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

### Is Tinker DIY free?

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

### Which has better reviews, Fi Exhaust or Tinker DIY?

Tinker DIY is rated higher. Fi Exhaust averages 2.5 out of 5 from 2 ratings, while Tinker DIY averages 4.7 from 2K ratings.

### Do Fi Exhaust or Tinker DIY have ads?

Neither Fi Exhaust nor Tinker DIY shows ads.

### Which is updated more often, Fi Exhaust or Tinker DIY?

Fi Exhaust ships an update every 2 months, and Tinker DIY every 3 weeks. Most recently, Fi Exhaust was updated on November 2, 2026 and Tinker DIY on November 3, 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.*