# DPC vs RIO

The clearest difference is update cadence: RIO at every 3 months against DPC's every 10 months. DPC's advantage is iOS requirement (11.0 vs 15.0). 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.

DPC ships an update every 10 months, RIO every 3 months. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | DPC | RIO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 months** |
| Size | 11 MB | 56 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Evak Pump Technology Corp.](https://appshunter.io/developer/1582745014) | [Rio-Trans](https://appshunter.io/developer/1525178600) |

## What reviewers say

### DPC

[App page](https://appshunter.io/ios/app/dpc-ii/id1582745012)

**Features:** macOS Compatibility

**In-app purchases:** none


### RIO

[App page](https://appshunter.io/ios/app/rio-trans/id6743072329)

**In-app purchases:** none


## Frequently asked questions

### Is DPC free?

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

### Is RIO free?

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

### Do DPC or RIO have ads?

Neither DPC nor RIO shows ads.

### Which is updated more often, DPC or RIO?

DPC ships an update every 10 months, and RIO every 3 months. Most recently, DPC was updated on October 7, 2026 and RIO on October 12, 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.*