# SiennaBC vs Grom Unique

The clearest difference is update cadence: Grom Unique at every 8 days against SiennaBC's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

SiennaBC ships an update every 2 weeks, Grom Unique every 8 days. The most recent releases landed on October 6, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | SiennaBC | Grom Unique |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Size | 26 MB | 33 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Milos Pavlovic](https://appshunter.io/developer/1763287004) | [ADRIATEC DOO KRAGUJEVAC](https://appshunter.io/developer/1570629996) |

## What reviewers say

### SiennaBC

[App page](https://appshunter.io/ios/app/siennabc/id6733246953)

**In-app purchases:** none


### Grom Unique

[App page](https://appshunter.io/ios/app/grom-unique/id6752949362)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SiennaBC free?

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

### Is Grom Unique free?

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

### Do SiennaBC or Grom Unique have ads?

Neither SiennaBC nor Grom Unique shows ads.

### Which is updated more often, SiennaBC or Grom Unique?

SiennaBC ships an update every 2 weeks, and Grom Unique every 8 days. Most recently, SiennaBC was updated on October 6, 2026 and Grom Unique on September 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.*