# VitaVitro_OPS vs Unit Converter Max

The clearest difference is in-app purchases: VitaVitro_OPS at none against Unit Converter Max's 1. VitaVitro_OPS also leads on iOS requirement (13.0 vs 17.0). Unit Converter Max's advantage is update cadence (every 3 weeks vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. Unit Converter Max sells 1 one-off in-app purchase. VitaVitro_OPS asks for nothing beyond the download.

VitaVitro_OPS ships an update every 5 months, Unit Converter Max every 3 weeks. The most recent releases landed on October 8, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | VitaVitro_OPS | Unit Converter Max |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (26 ratings)](https://appshunter.io/ios/app/unit-converter-max/id6747881604/reviews)** |
| Number of ratings | — | **26** |
| Positive reviews | — | 87.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 84 MB | 36 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen VitaVitro Biotech Co,. Ltd](https://appshunter.io/developer/1519739185) | [Rich Soft Co., Ltd](https://appshunter.io/developer/1499019813) |

## What reviewers say

### VitaVitro_OPS

[App page](https://appshunter.io/ios/app/vitavitro-ops/id1543678929)

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Converter Max

[App page](https://appshunter.io/ios/app/unit-converter-max/id6747881604)

This app offers fast and accurate conversions for over 30 unit categories and 150 world currencies. It features a clean interface, offline functionality, and light/dark modes, designed for travel, work, and everyday calculations.

**Highlights:** 30+ unit categories, 150+ world currencies, Offline unit conversion, Clean, easy-to-read interface, Light and dark mode, Fast and accurate results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Converter Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is VitaVitro_OPS free?

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

### Is Unit Converter Max free?

Unit Converter Max is free to download, with in-app purchases available.

### Do VitaVitro_OPS or Unit Converter Max have ads?

Neither VitaVitro_OPS nor Unit Converter Max shows ads.

### Which is updated more often, VitaVitro_OPS or Unit Converter Max?

VitaVitro_OPS ships an update every 5 months, and Unit Converter Max every 3 weeks. Most recently, VitaVitro_OPS was updated on October 8, 2026 and Unit Converter Max on October 17, 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.*