# Adiem vs iCountdownClock

The clearest difference is in-app purchases: Adiem at none against iCountdownClock's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. iCountdownClock sells 1 one-off in-app purchase. Adiem asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 29, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Adiem | iCountdownClock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/adiem/id1562295627/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 76.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 35 MB | 2 MB |
| Requires iOS | **18.0** | 18.2 |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Adiem](https://appshunter.io/developer/1562295629) | [Laure Chipman](https://appshunter.io/developer/1782715943) |

## What reviewers say

### Adiem

[App page](https://appshunter.io/ios/app/adiem/id1562295627)

This app uses personalized haptic rhythms based on your heart data to help you self-regulate and feel calm in social situations. It discreetly guides your body into a relaxed state through subtle vibrations on your wrist.

**Highlights:** Personalized haptic feedback, Apple Watch integration, Adaptive rhythm adjustment, Seamless and private operation, Supports emotional regulation, Based on heart data

**Features:** Apple Watch app

**In-app purchases:** none


### iCountdownClock

[App page](https://appshunter.io/ios/app/icountdownclock/id6759740936)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Events | $2.99 | one-time |


## Frequently asked questions

### Is Adiem free?

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

### Is iCountdownClock free?

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

### Do Adiem or iCountdownClock have ads?

Neither Adiem nor iCountdownClock shows ads.

### Which is updated more often, Adiem or iCountdownClock?

Adiem ships an update every 2 months, and iCountdownClock every 2 months. Most recently, Adiem was updated on September 29, 2026 and iCountdownClock on October 3, 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.*