# InviSense vs Echo

The clearest difference is in-app purchases: InviSense at none against Echo's 6. InviSense also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Echo sells 6 in-app purchases, starting at $4.99 per 7 days. InviSense asks for nothing beyond the download.

InviSense ships an update every 6 weeks, Echo monthly. The most recent releases landed on September 9, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | InviSense | Echo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/echo-shadow-work-journal/id6738644284/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 34 MB | 49 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [InviSense AB](https://appshunter.io/developer/1442539999) | [Engcraft, LLC](https://appshunter.io/developer/1561190842) |

## What reviewers say

### InviSense

[App page](https://appshunter.io/ios/app/invisense/id1442540000)

**In-app purchases:** none


### Echo

[App page](https://appshunter.io/ios/app/echo-shadow-work-journal/id6738644284)

This AI-powered companion transforms voice notes into actionable insights and creative content. It offers transcription, summarization, planning tools, and creative generation features to help you organize and enhance your ideas.

**Highlights:** Voice note transcription, AI-powered summarization, Actionable planning tools, Creative content generation, Mood and grammar analysis, Goal setting

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $4.99 | per 7 days |
| Weekly Subscription | $6.99 | per 7 days |
| Monthly Subscription | $10.49 | per month |
| Monthly Subscription | $14.99 | per month |
| Annual Subscription | $29.99 | per year |
| Annual Subscription | $39.99 | per year |


## Frequently asked questions

### Is InviSense free?

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

### Is Echo free?

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

### Do InviSense or Echo have ads?

Neither InviSense nor Echo shows ads.

### Which is updated more often, InviSense or Echo?

InviSense ships an update every 6 weeks, and Echo monthly. Most recently, InviSense was updated on September 9, 2026 and Echo on September 16, 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.*