# CrossChem vs Echo Time Voice Assistant

The clearest difference is in-app purchases: CrossChem at none against Echo Time Voice Assistant's 3. CrossChem also leads on iOS requirement (14.0 vs 17.6). Echo Time Voice Assistant's advantage is update cadence (every 4 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Echo Time Voice Assistant sells 3 in-app purchases, starting at $2.99 per month. CrossChem asks for nothing beyond the download.

CrossChem ships an update every 2 months, Echo Time Voice Assistant every 4 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | CrossChem | Echo Time Voice Assistant |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 68 MB | 7 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CrossChem SIA](https://appshunter.io/developer/1560981232) | [Echo Time SIA](https://appshunter.io/developer/1848583256) |

## What reviewers say

### CrossChem

[App page](https://appshunter.io/ios/app/crosschem/id1560981230)

**Features:** macOS Compatibility

**In-app purchases:** none


### Echo Time Voice Assistant

[App page](https://appshunter.io/ios/app/echo-time-voice-assistant/id6754512934)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Monthly | $2.99 | per month |
| Pro Monthly | $4.99 | per month |
| Pro Yearly | $24.99 | per year |


## Frequently asked questions

### Is CrossChem free?

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

### Is Echo Time Voice Assistant free?

Echo Time Voice Assistant is free to download, with in-app purchases available.

### Do CrossChem or Echo Time Voice Assistant have ads?

Neither CrossChem nor Echo Time Voice Assistant shows ads.

### Which is updated more often, CrossChem or Echo Time Voice Assistant?

CrossChem ships an update every 2 months, and Echo Time Voice Assistant every 4 days. Most recently, CrossChem was updated on October 25, 2026 and Echo Time Voice Assistant on October 28, 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.*