# Sumi vs ECHO

The clearest difference is update cadence: ECHO at every 2 days against Sumi's every 5 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sumi sells 3 in-app purchases, starting at $5.99 per month and ECHO sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Sumi ships an update every 5 days, ECHO every 2 days. The most recent releases landed on September 20, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Sumi | ECHO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/sumi-deep-work-focus/id6448810281/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | Free | — |
| Size | 10 MB | 16 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [David Park](https://appshunter.io/developer/1686485618) | [LIANG SHAN](https://appshunter.io/developer/1882595154) |

## What reviewers say

### Sumi

[App page](https://appshunter.io/ios/app/sumi-deep-work-focus/id6448810281)

This app helps you reduce phone usage by setting timers for breaks. It alerts you if you touch or move your device during the break, aiming to boost productivity and mental well-being.

**Highlights:** Timed phone breaks, Movement alerts, Productivity enhancement, Mental health improvement, Simple interface

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sumi Pro Monthly | $5.99 | per month |
| Sumi Pro Annual | $24.99 | per year |
| Sumi Pro Lifetime | $49.99 | one-time |


### ECHO

[App page](https://appshunter.io/ios/app/echo-ai-therapy-supervisor/id6760090490)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Credits | $12.99 | one-time |
| 50 Credits | $51.99 | one-time |
| 100 Credits | $90.99 | one-time |
| ECHO License | $149.00 | one-time |


## Frequently asked questions

### Is Sumi free?

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

### Is ECHO free?

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

### Do Sumi or ECHO have ads?

Neither Sumi nor ECHO shows ads.

### Which is updated more often, Sumi or ECHO?

Sumi ships an update every 5 days, and ECHO every 2 days. Most recently, Sumi was updated on September 20, 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.*