# YOOZI EV vs Spiral Engineering

YOOZI EV and Spiral Engineering are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

YOOZI EV ships an update every 2 months, Spiral Engineering every 5 weeks. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | YOOZI EV | Spiral Engineering |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (5 ratings)](https://appshunter.io/ios/app/spiral-engineering/id1576156198/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | — | Free |
| Size | 43 MB | 32 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Yingli Technology Co., Ltd](https://appshunter.io/developer/1564044034) | [Litetrace Inc](https://appshunter.io/developer/1685148777) |

## What reviewers say

### YOOZI EV

[App page](https://appshunter.io/ios/app/yoozi-ev/id1564044032)

**Features:** macOS Compatibility

**In-app purchases:** none


### Spiral Engineering

[App page](https://appshunter.io/ios/app/spiral-engineering/id1576156198)

This utility app allows for firmware over-the-air updates and professional parameter adjustments for connected devices. Users can fine-tune settings such as PWM, high and low trim, fading time, and auto brightness levels.

**Highlights:** Firmware OTA updates, Professional parameter setting, PWM adjustment, High and low trim control, Fading time configuration, Auto brightness level setting

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is YOOZI EV free?

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

### Is Spiral Engineering free?

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

### Do YOOZI EV or Spiral Engineering have ads?

Neither YOOZI EV nor Spiral Engineering shows ads.

### Which is updated more often, YOOZI EV or Spiral Engineering?

YOOZI EV ships an update every 2 months, and Spiral Engineering every 5 weeks. Most recently, YOOZI EV was updated on October 10, 2026 and Spiral Engineering on October 24, 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.*