# EchoDo vs Prep Clock

The clearest difference is iOS requirement: EchoDo at 16.0 against Prep Clock's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. EchoDo sells 3 in-app purchases, starting at $1.99 per month and Prep Clock sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | EchoDo | Prep Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Size | 50 MB | 16 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [雪芹 冯](https://appshunter.io/developer/1522044280) | [Ryan Tinklepaugh](https://appshunter.io/developer/1883444651) |

## What reviewers say

### EchoDo

[App page](https://appshunter.io/ios/app/echodo/id6758426450)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EchoDo Pro Monthly | $1.99 | per month |
| EchoDo Pro Annual | $4.99 | per year |
| EchoDo Pro Lifetime | $9.99 | one-time |


### Prep Clock

[App page](https://appshunter.io/ios/app/prep-clock-backward-timer/id6760279596)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Pro Annual | $19.99 | per year |


## Frequently asked questions

### Is EchoDo free?

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

### Is Prep Clock free?

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

### Do EchoDo or Prep Clock have ads?

Neither EchoDo nor Prep Clock shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*