# DPU vs ESS Online

The clearest difference is update cadence: DPU at every 2 weeks against ESS Online's monthly. ESS Online's advantage is iOS requirement (13.0 vs 15.6). 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.

DPU ships an update every 2 weeks, ESS Online monthly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | DPU | ESS Online |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Size | 38 MB | 61 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Hoai Nam Bui](https://appshunter.io/developer/1787188300) | [Vanhak Sreng](https://appshunter.io/developer/1626768007) |

## What reviewers say

### DPU

[App page](https://appshunter.io/ios/app/dpu-checkin/id6747793236)

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

**In-app purchases:** none


### ESS Online

[App page](https://appshunter.io/ios/app/ess-online/id6748372603)

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

**In-app purchases:** none


## Frequently asked questions

### Is DPU free?

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

### Is ESS Online free?

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

### Do DPU or ESS Online have ads?

Neither DPU nor ESS Online shows ads.

### Which is updated more often, DPU or ESS Online?

DPU ships an update every 2 weeks, and ESS Online monthly. Most recently, DPU was updated on October 28, 2026 and ESS Online on October 25, 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.*