# Metso Dynamic Service Key vs NuField

The clearest difference is iOS requirement: NuField at 11.0 against Metso Dynamic Service Key'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.

Both ship on a similar rhythm, roughly every 21 months. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Metso Dynamic Service Key | NuField |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | Every 21 months |
| Size | 14 MB | 56 MB |
| Requires iOS | 15.1 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Metso Finland Oy](https://appshunter.io/developer/1311427391) | [Nuvista Technologies Pte Ltd](https://appshunter.io/developer/1370801327) |

## What reviewers say

### Metso Dynamic Service Key

[App page](https://appshunter.io/ios/app/metso-dynamic-service-key/id1556642990)

**Features:** macOS Compatibility

**In-app purchases:** none


### NuField

[App page](https://appshunter.io/ios/app/nufield/id1644328489)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Metso Dynamic Service Key free?

Metso Dynamic Service Key is free to download, with no in-app purchases.

### Is NuField free?

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

### Do Metso Dynamic Service Key or NuField have ads?

Neither Metso Dynamic Service Key nor NuField shows ads.

### Which is updated more often, Metso Dynamic Service Key or NuField?

Metso Dynamic Service Key ships an update every 21 months, and NuField every 21 months. Most recently, Metso Dynamic Service Key was updated on October 25, 2026 and NuField on October 6, 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.*