# Echo vs CalcuSum

The clearest difference is in-app purchases: CalcuSum at none against Echo's 6. CalcuSum also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). Echo's advantage is update cadence (monthly vs every 12 months). On price 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. CalcuSum asks for nothing beyond the download.

Echo ships an update monthly, CalcuSum every 12 months. The most recent releases landed on October 31, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Echo | CalcuSum |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 42 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Engcraft, LLC](https://appshunter.io/developer/1561190842) | [POSHIM LLC](https://appshunter.io/developer/1800893481) |

## What reviewers say

### 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 |


### CalcuSum

[App page](https://appshunter.io/ios/app/calcusum/id6743106626)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Echo free?

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

### Is CalcuSum free?

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

### Do Echo or CalcuSum have ads?

Neither Echo nor CalcuSum shows ads.

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

Echo ships an update monthly, and CalcuSum every 12 months. Most recently, Echo was updated on October 31, 2026 and CalcuSum on November 4, 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.*