# Viis vs RalliP Smart phase 2

The clearest difference is iOS requirement: Viis at 13.0 against RalliP Smart phase 2's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Viis ships an update every 5 weeks, RalliP Smart phase 2 every 3 weeks. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Viis | RalliP Smart phase 2 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 86 MB | 35 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thong Ho](https://appshunter.io/developer/1631859461) | [RANG DONG LIGHT SOURCE AND VACUUM FLASK JOINT STOCK COMPANY](https://appshunter.io/developer/1453529637) |

## What reviewers say

### Viis

[App page](https://appshunter.io/ios/app/viis/id1631859459)

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

**In-app purchases:** none


### RalliP Smart phase 2

[App page](https://appshunter.io/ios/app/rallip-smart-phase-2/id6448083195)

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

**In-app purchases:** none


## Frequently asked questions

### Is Viis free?

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

### Is RalliP Smart phase 2 free?

RalliP Smart phase 2 is free to download, with no in-app purchases.

### Do Viis or RalliP Smart phase 2 have ads?

Neither Viis nor RalliP Smart phase 2 shows ads.

### Which is updated more often, Viis or RalliP Smart phase 2?

Viis ships an update every 5 weeks, and RalliP Smart phase 2 every 3 weeks. Most recently, Viis was updated on November 3, 2026 and RalliP Smart phase 2 on October 27, 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.*