# Colfax Elementary SD vs ESU 6

The clearest difference is update cadence: ESU 6 at every 3 months against Colfax Elementary SD's every 7 months. 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.

Colfax Elementary SD ships an update every 7 months, ESU 6 every 3 months. The most recent releases landed on May 16, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Colfax Elementary SD | ESU 6 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Size | 30 MB | 142 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Colfax Elementary School District](https://appshunter.io/developer/1683952864) | [ESU 6, NE](https://appshunter.io/developer/1785917101) |

## What reviewers say

### Colfax Elementary SD

[App page](https://appshunter.io/ios/app/colfax-elementary-sd/id6448200823)

**In-app purchases:** none


### ESU 6

[App page](https://appshunter.io/ios/app/esu-6/id6739540990)

**In-app purchases:** none


## Frequently asked questions

### Is Colfax Elementary SD free?

Colfax Elementary SD is free to download, with no in-app purchases.

### Is ESU 6 free?

ESU 6 is free to download, with no in-app purchases.

### Do Colfax Elementary SD or ESU 6 have ads?

Neither Colfax Elementary SD nor ESU 6 shows ads.

### Which is updated more often, Colfax Elementary SD or ESU 6?

Colfax Elementary SD ships an update every 7 months, and ESU 6 every 3 months. Most recently, Colfax Elementary SD was updated on May 16, 2026 and ESU 6 on September 21, 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.*