# Techno Rainbow vs HedgeCheck

Techno Rainbow and HedgeCheck 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.

Techno Rainbow ships an update every 2 months, HedgeCheck every 5 weeks. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Techno Rainbow | HedgeCheck |
| --- | --- | --- |
| Price | Free | Free |
| 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 | 3 MB | 10 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 9+ |
| Developer | [ShenZhen Lenze Technology Co,.Ltd.](https://appshunter.io/developer/1190864538) | [Anna Diubina](https://appshunter.io/developer/1506918460) |

## What reviewers say

### Techno Rainbow

[App page](https://appshunter.io/ios/app/techno-rainbow/id6453409883)

Control your car's interior lighting and air freshening systems. Customize lighting modes, colors, and brightness, and manage scent intensity and air purification for a personalized driving experience.

**Highlights:** Car interior lighting control, Customizable lighting modes and colors, Rainbow lighting effect, Music synchronization for lighting, Air freshening and ionization control, Adjustable scent intensity

**In-app purchases:** none


### HedgeCheck

[App page](https://appshunter.io/ios/app/hedgecheck/id6480376560)

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

**In-app purchases:** none


## Frequently asked questions

### Is Techno Rainbow free?

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

### Is HedgeCheck free?

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

### Do Techno Rainbow or HedgeCheck have ads?

Neither Techno Rainbow nor HedgeCheck shows ads.

### Which is updated more often, Techno Rainbow or HedgeCheck?

Techno Rainbow ships an update every 2 months, and HedgeCheck every 5 weeks. Most recently, Techno Rainbow was updated on October 1, 2026 and HedgeCheck on October 9, 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.*