# Elmhurst D205 vs Ambient Onboarding

The clearest difference is ads: Elmhurst D205 at none against Ambient Onboarding's shown. Elmhurst D205 also leads on update cadence (every 3 months vs every 7 months). Ambient Onboarding's advantage is iOS requirement (13.0 vs 16.0). On price, 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.

Elmhurst D205 ships an update every 3 months, Ambient Onboarding every 7 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Elmhurst D205 | Ambient Onboarding |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/ambient-onboarding/id6737564423/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 7 months |
| Monetization | — | Ad-supported |
| Size | 144 MB | 85 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Elmhurst CUSD 205](https://appshunter.io/developer/1755393625) | [Ambient Technologies Inc.](https://appshunter.io/developer/1777088450) |

## What reviewers say

### Elmhurst D205

[App page](https://appshunter.io/ios/app/elmhurst-d205/id6508166961)

**In-app purchases:** none


### Ambient Onboarding

[App page](https://appshunter.io/ios/app/ambient-onboarding/id6737564423)

This application facilitates the onboarding and management of environmental sensors within a decentralized network. Users can monitor local air quality and track their earned rewards for contributing data. Join a community focused on environmental impact.

**Highlights:** Onboard and manage sensors, Monitor air quality, Track rewards, Decentralized network contribution

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Elmhurst D205 free?

Elmhurst D205 is free to download, with no in-app purchases.

### Is Ambient Onboarding free?

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

### Do Elmhurst D205 or Ambient Onboarding have ads?

Ambient Onboarding shows ads; Elmhurst D205 does not.

### Which is updated more often, Elmhurst D205 or Ambient Onboarding?

Elmhurst D205 ships an update every 3 months, and Ambient Onboarding every 7 months. Most recently, Elmhurst D205 was updated on October 25, 2026 and Ambient Onboarding on October 24, 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.*