# BOSI vs String Art Designer

The clearest difference is in-app purchases: BOSI at none against String Art Designer's 2. BOSI also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (9.1 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. String Art Designer sells 2 one-off in-app purchases. BOSI asks for nothing beyond the download.

BOSI ships an update fortnightly, String Art Designer every 2 months. The most recent releases landed on October 6, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | BOSI | String Art Designer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/string-art-designer/id1571012274/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 44 MB | 23 MB |
| Requires iOS | **9.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Heaton Technology Co., Ltd.](https://appshunter.io/developer/1076063818) | [Tomoaki Yagishita](https://appshunter.io/developer/387622096) |

## What reviewers say

### BOSI

[App page](https://appshunter.io/ios/app/bosi/id1490808579)

**Features:** macOS Compatibility

**In-app purchases:** none


### String Art Designer

[App page](https://appshunter.io/ios/app/string-art-designer/id1571012274)

Create intricate string art designs with various string types and modes. Transform photos into unique string art pieces. Offers in-app purchases for expanded features and unlimited string options.

**Highlights:** Math-String mode, Cyclic string type, Step string type, Custom string type, Portrait mode for photo art, In-app purchases for advanced features

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited  String | $5.99 | one-time |
| PortraitArt | $19.99 | one-time |


## Frequently asked questions

### Is BOSI free?

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

### Is String Art Designer free?

String Art Designer is free to download, with in-app purchases available.

### Do BOSI or String Art Designer have ads?

Neither BOSI nor String Art Designer shows ads.

### Which is updated more often, BOSI or String Art Designer?

BOSI ships an update fortnightly, and String Art Designer every 2 months. Most recently, BOSI was updated on October 6, 2026 and String Art Designer on October 2, 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.*