# EchoKeep vs Stack'd

The clearest difference is in-app purchases: EchoKeep at none against Stack'd's 2. EchoKeep also leads on iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Stack'd sells 2 in-app purchases, starting at $4.99 per month. EchoKeep asks for nothing beyond the download.

## The numbers

| Metric | EchoKeep | Stack'd |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Size | 29 MB | 41 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Plastic Engine Technology Co., Ltd](https://appshunter.io/developer/1761472358) | [Oladimeji Ipaye](https://appshunter.io/developer/1873701358) |

## What reviewers say

### EchoKeep

[App page](https://appshunter.io/ios/app/echokeep-thoughts-in-mind/id6753336417)

**Features:** macOS Compatibility

**In-app purchases:** none


### Stack'd

[App page](https://appshunter.io/ios/app/stackd-build-your-streak/id6758567719)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stack'd Premium - Monthly | $4.99 | per month |
| Stack'd Premium - Yearly | $34.99 | per year |


## Frequently asked questions

### Is EchoKeep free?

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

### Is Stack'd free?

Stack'd is free to download, with in-app purchases available.

### Do EchoKeep or Stack'd have ads?

Neither EchoKeep nor Stack'd shows ads.

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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.*