# Ultra Boost Piezo vs SPARK 3

The clearest difference is rating: SPARK 3 at 4.9 against Ultra Boost Piezo's 3.8. Ultra Boost Piezo's advantage is update cadence (fortnightly vs every 7 months) and review sentiment (80% vs 67%). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

SPARK 3 holds the better App Store score, 4.9 against 3.8. Both are backed by a comparable volume of ratings — 4 and 9 respectively. Written reviews complicate that: 80% of Ultra Boost Piezo's written reviews are positive against 67% of SPARK 3's, so the app with the better star average is not the one people write more warmly about.

Ultra Boost Piezo ships an update fortnightly, SPARK 3 every 7 months. The most recent releases landed on October 20, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Ultra Boost Piezo | SPARK 3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/ultra-boost-piezo/id1579264665/reviews) | **[4.9 (9 ratings)](https://appshunter.io/ios/app/spark-3-alphatech/id1583702864/reviews)** |
| Number of ratings | 4 | **9** |
| Positive reviews | **80.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 7 months |
| Monetization | Free | Free |
| Size | 80 MB | 44 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ECU=SHOP](https://appshunter.io/developer/1389703440) | [Suthipoj tripuwabhrut](https://appshunter.io/developer/1445632800) |

## What reviewers say

### Ultra Boost Piezo

[App page](https://appshunter.io/ios/app/ultra-boost-piezo/id1579264665)

This application allows users to wirelessly adjust fuel supply and monitor engine performance metrics like RPM, boost, and speed via a mobile phone. It features an AI mode for automatic operation adjustments and offers a tangible price point for increased horsepower.

**Highlights:** Wireless fuel adjustment, RPM and boost display, AI automatic operation mode, Monitor oil pressure, GPS speed display, Weather and air pressure data

**Features:** macOS Compatibility

**In-app purchases:** none


### SPARK 3

[App page](https://appshunter.io/ios/app/spark-3-alphatech/id1583702864)

Enhance your vehicle's responsiveness with this utility app. It offers adjustable throttle settings for a more engaging driving experience, compatible with both gasoline and diesel engines. Enjoy features like smoke limit and ramble modes without engine modification.

**Highlights:** Adjustable electric throttle (50 levels), Improved throttle response, No wire cutting required, Compatible with gasoline and diesel, Smoke limit mode, Ramble mode

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

**In-app purchases:** none


## Frequently asked questions

### Is Ultra Boost Piezo free?

Ultra Boost Piezo is free to download, with no in-app purchases.

### Is SPARK 3 free?

SPARK 3 is free to download, with no in-app purchases.

### Which has better reviews, Ultra Boost Piezo or SPARK 3?

SPARK 3 is rated higher. Ultra Boost Piezo averages 3.8 out of 5 from 4 ratings, while SPARK 3 averages 4.9 from 9 ratings.

### Do Ultra Boost Piezo or SPARK 3 have ads?

Neither Ultra Boost Piezo nor SPARK 3 shows ads.

### Which is updated more often, Ultra Boost Piezo or SPARK 3?

Ultra Boost Piezo ships an update fortnightly, and SPARK 3 every 7 months. Most recently, Ultra Boost Piezo was updated on October 20, 2026 and SPARK 3 on October 23, 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.*