# UnitAi vs Wivio

The clearest difference is in-app purchases: UnitAi at none against Wivio's 1. UnitAi also leads on iOS requirement (18.5 vs 26). Wivio's advantage is update cadence (every 3 days vs every 11 months). On price, ads and device support there is nothing between them.

Both are free to download. Wivio sells 1 one-off in-app purchase. UnitAi asks for nothing beyond the download.

UnitAi ships an update every 11 months, Wivio every 3 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | UnitAi | Wivio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 days** |
| Size | 1 MB | 19 MB |
| Requires iOS | **18.5** | 26 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ZERONOON LIMITED](https://appshunter.io/developer/1775736649) | [Jorge Grima](https://appshunter.io/developer/1781073004) |

## What reviewers say

### UnitAi

[App page](https://appshunter.io/ios/app/unitai-storage-unit-converter/id6737280787)

**Features:** macOS Compatibility

**In-app purchases:** none


### Wivio

[App page](https://appshunter.io/ios/app/wivio/id6749204669)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| App Purchase | $2.99 | one-time |


## Frequently asked questions

### Is UnitAi free?

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

### Is Wivio free?

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

### Do UnitAi or Wivio have ads?

Neither UnitAi nor Wivio shows ads.

### Which is updated more often, UnitAi or Wivio?

UnitAi ships an update every 11 months, and Wivio every 3 days. Most recently, UnitAi was updated on October 27, 2026 and Wivio on October 28, 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.*