# Smart Brush Timer vs TeethStory

The clearest difference is in-app purchases: Smart Brush Timer at none against TeethStory's 4. Smart Brush Timer also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.4). TeethStory's advantage is update cadence (every 3 weeks vs every 2 months). On price and ads there is nothing between them.

Both are free to download. TeethStory sells 4 in-app purchases, starting at $1.99 per year. Smart Brush Timer asks for nothing beyond the download.

Smart Brush Timer ships an update every 2 months, TeethStory every 3 weeks. The most recent releases landed on September 19, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Smart Brush Timer | TeethStory |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 32 MB | 29 MB |
| Requires iOS | **15.1** | 17.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shintae Park](https://appshunter.io/developer/1829258738) | [冬晓 陈](https://appshunter.io/developer/1778902357) |

## What reviewers say

### Smart Brush Timer

[App page](https://appshunter.io/ios/app/smart-brush-timer/id6752644788)

**Features:** macOS Compatibility

**In-app purchases:** none


### TeethStory

[App page](https://appshunter.io/ios/app/teethstory/id6757392911)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TeethStory Yearly | $1.99 | per year |
| TeethStory Yearly Discount | $2.99 | per year |
| TeethStory Lifetime Discount | $3.99 | one-time |
| TeethStory Lifetime | $7.99 | one-time |


## Frequently asked questions

### Is Smart Brush Timer free?

Smart Brush Timer is free to download, with no in-app purchases.

### Is TeethStory free?

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

### Do Smart Brush Timer or TeethStory have ads?

Neither Smart Brush Timer nor TeethStory shows ads.

### Which is updated more often, Smart Brush Timer or TeethStory?

Smart Brush Timer ships an update every 2 months, and TeethStory every 3 weeks. Most recently, Smart Brush Timer was updated on September 19, 2026 and TeethStory on September 13, 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.*