# Deepflow Focus Timer vs Prep Clock

The clearest difference is in-app purchases: Deepflow Focus Timer at none against Prep Clock's 2. Deepflow Focus Timer also leads on iOS requirement (16.0 vs 18.0). Prep Clock's advantage is ads (none vs shown) and update cadence (every 5 days vs every 4 months). On price and device support there is nothing between them.

Both are free to download. Prep Clock sells 2 in-app purchases, starting at $2.99 per month. Deepflow Focus Timer asks for nothing beyond the download.

Deepflow Focus Timer ships an update every 4 months, Prep Clock every 5 days. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Deepflow Focus Timer | Prep Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 5 days** |
| Size | 2 MB | 17 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Deepflow Labs LLC](https://appshunter.io/developer/1861859562) | [Ryan Tinklepaugh](https://appshunter.io/developer/1883444651) |

## What reviewers say

### Deepflow Focus Timer

[App page](https://appshunter.io/ios/app/deepflow-focus-timer/id6756620784)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Deepflow Focus Timer free?

Deepflow Focus Timer is free to download, with no in-app purchases.

### Is Prep Clock free?

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

### Do Deepflow Focus Timer or Prep Clock have ads?

Deepflow Focus Timer shows ads; Prep Clock does not.

### Which is updated more often, Deepflow Focus Timer or Prep Clock?

Deepflow Focus Timer ships an update every 4 months, and Prep Clock every 5 days. Most recently, Deepflow Focus Timer was updated on November 5, 2026 and Prep Clock on November 9, 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.*