# Knowledge Exchange UK vs API 571 Helpmate

The clearest difference is in-app purchases: Knowledge Exchange UK at none against API 571 Helpmate's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. API 571 Helpmate sells 1 in-app purchase, starting at $29.00 per year. Knowledge Exchange UK asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 8 months. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Knowledge Exchange UK | API 571 Helpmate |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | Every 8 months |
| Size | 48 MB | 34 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Teknowledge Software](https://appshunter.io/developer/348684387) | [Austenite Pty Ltd](https://appshunter.io/developer/1525502686) |

## What reviewers say

### Knowledge Exchange UK

[App page](https://appshunter.io/ios/app/knowledge-exchange-uk/id6553989019)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### API 571 Helpmate

[App page](https://appshunter.io/ios/app/api-571-helpmate/id6746396841)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 12 Months Plan | $29.00 | per year |


## Frequently asked questions

### Is Knowledge Exchange UK free?

Knowledge Exchange UK is free to download, with no in-app purchases.

### Is API 571 Helpmate free?

API 571 Helpmate is free to download, with in-app purchases available.

### Do Knowledge Exchange UK or API 571 Helpmate have ads?

Neither Knowledge Exchange UK nor API 571 Helpmate shows ads.

### Which is updated more often, Knowledge Exchange UK or API 571 Helpmate?

Knowledge Exchange UK ships an update every 8 months, and API 571 Helpmate every 8 months. Most recently, Knowledge Exchange UK was updated on October 13, 2026 and API 571 Helpmate on October 15, 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.*