# Stanislaus Union SD vs Krend

The clearest difference is in-app purchases: Stanislaus Union SD at none against Krend's 3. Stanislaus Union SD also leads on iOS requirement (13.0 vs 15.0). Krend's advantage is update cadence (every 2 months vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. Krend sells 3 in-app purchases, starting at $6.99 per month. Stanislaus Union SD asks for nothing beyond the download.

Stanislaus Union SD ships an update every 8 months, Krend every 2 months. The most recent releases landed on November 11, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Stanislaus Union SD | Krend |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Size | 32 MB | 25 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stanislaus Union School District](https://appshunter.io/developer/1455873377) | [Chanyoung Boo](https://appshunter.io/developer/6803555037) |

## What reviewers say

### Stanislaus Union SD

[App page](https://appshunter.io/ios/app/stanislaus-union-sd/id1455873378)

**Features:** macOS Compatibility

**In-app purchases:** none


### Krend

[App page](https://appshunter.io/ios/app/krend-learn-korean/id6803555035)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Krend Pro: Monthly | $6.99 | per month |
| Krend Pro: Yearly | $39.99 | per year |
| Krend Pro: Lifetime | $69.99 | one-time |


## Frequently asked questions

### Is Stanislaus Union SD free?

Stanislaus Union SD is free to download, with no in-app purchases.

### Is Krend free?

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

### Do Stanislaus Union SD or Krend have ads?

Neither Stanislaus Union SD nor Krend shows ads.

### Which is updated more often, Stanislaus Union SD or Krend?

Stanislaus Union SD ships an update every 8 months, and Krend every 2 months. Most recently, Stanislaus Union SD was updated on November 11, 2026 and Krend on November 10, 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.*