# Dev Services vs Knowio

The clearest difference is update cadence: Knowio at every 2 months against Dev Services's every 3 months. Dev Services's advantage is iOS requirement (12.2 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.

Dev Services ships an update every 3 months, Knowio every 2 months. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Dev Services | Knowio |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 104 MB | 48 MB |
| Requires iOS | **12.2** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Scottish Water Limited](https://appshunter.io/developer/1458462053) | [Inniovate Ltd](https://appshunter.io/developer/1725974365) |

## What reviewers say

### Dev Services

[App page](https://appshunter.io/ios/app/dev-services/id1458462054)

This utility app enables font replacement within a remote inspection application. After installation, users can email for access and to add new inspection sites, providing necessary site details. Feedback and questions can also be directed via email.

**Highlights:** Font replacement with Google Figtree, Request access via email, Add new inspection sites, Provide site details for additions, Submit feedback and questions via email

**Features:** macOS Compatibility

**In-app purchases:** none


### Knowio

[App page](https://appshunter.io/ios/app/knowio/id6476141189)

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

**In-app purchases:** none


## Frequently asked questions

### Is Dev Services free?

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

### Is Knowio free?

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

### Do Dev Services or Knowio have ads?

Neither Dev Services nor Knowio shows ads.

### Which is updated more often, Dev Services or Knowio?

Dev Services ships an update every 3 months, and Knowio every 2 months. Most recently, Dev Services was updated on October 1, 2026 and Knowio on September 30, 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.*