# Deep Sleep vs CountWhen

The clearest difference is in-app purchases: Deep Sleep at none against CountWhen's 1. CountWhen's advantage is update cadence (every 4 days vs every 8 days) and iOS requirement (15.1 vs 18.5). On price, ads and device support there is nothing between them.

Both are free to download. CountWhen sells 1 one-off in-app purchase. Deep Sleep asks for nothing beyond the download.

Deep Sleep ships an update every 8 days, CountWhen every 4 days. The most recent releases landed on October 26, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Deep Sleep | CountWhen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/countwhen-last-time-tracker/id6760208298/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 4 days** |
| Monetization | — | Free |
| Size | 278 MB | 29 MB |
| Requires iOS | 18.5 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | +4 | 4+ |
| Developer | [Xinzhou Liu](https://appshunter.io/developer/1797853405) | [46 Peaks Technologies LLC](https://appshunter.io/developer/1883206364) |

## What reviewers say

### Deep Sleep

[App page](https://appshunter.io/ios/app/deep-sleep-x/id6748362659)

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

**In-app purchases:** none


### CountWhen

[App page](https://appshunter.io/ios/app/countwhen-last-time-tracker/id6760208298)

Easily track intervals for anything, from baby care to personal habits. Log events with a single tap and instantly see elapsed time, upcoming due dates, or remaining wait times. Designed for privacy with all data stored locally on your device.

**Highlights:** Log events with one tap, Track intervals for baby care, Monitor personal habits and self-care, Set recurring or minimum wait time reminders, Local data storage for privacy, Customizable interface with dark mode

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Timers Forever | $2.99 | one-time |


## Frequently asked questions

### Is Deep Sleep free?

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

### Is CountWhen free?

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

### Do Deep Sleep or CountWhen have ads?

Neither Deep Sleep nor CountWhen shows ads.

### Which is updated more often, Deep Sleep or CountWhen?

Deep Sleep ships an update every 8 days, and CountWhen every 4 days. Most recently, Deep Sleep was updated on October 26, 2026 and CountWhen on October 8, 2026.

---

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