# GUM SMART vs セルフホワイトニング～幸 Sachi～

The clearest difference is in-app purchases: セルフホワイトニング～幸 Sachi～ at none against GUM SMART's 1. セルフホワイトニング～幸 Sachi～ also leads on iOS requirement (13.4 vs 15.0). GUM SMART's advantage is device support. On price there is nothing between them.

Both are free to download. GUM SMART sells 1 in-app purchase, starting at $27.49 per year. セルフホワイトニング～幸 Sachi～ asks for nothing beyond the download.

## The numbers

| Metric | GUM SMART | セルフホワイトニング～幸 Sachi～ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/gum-smart/id1473619600/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 40.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 192 MB | 36 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [PLAYBRUSH LTD](https://appshunter.io/developer/959404938) | [株式会社EPARKリラク&エステ](https://appshunter.io/developer/1096509136) |

## What reviewers say

### GUM SMART

[App page](https://appshunter.io/ios/app/gum-smart/id1473619600)

This app helps you build healthier brushing habits with personalized support and real-time coaching. It offers insights into your brushing coverage, frequency, duration, and pressure, and provides tailored advice. It works with any toothbrush and offers full functionality when paired with a compatible electric model.

**Highlights:** Personalized brushing support, Real-time brushing coach, Brushing insights and stats, Tailored oral hygiene advice, Brushing session logging, Customizable reminders

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Playbrush Subscription | $27.49 | per year |


### セルフホワイトニング～幸 Sachi～

[App page](https://appshunter.io/ios/app/sachi/id6504311963)

**In-app purchases:** none


## Frequently asked questions

### Is GUM SMART free?

GUM SMART is free to download, with in-app purchases available.

### Is セルフホワイトニング～幸 Sachi～ free?

セルフホワイトニング～幸 Sachi～ is free to download, with no in-app purchases.

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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.*