# PowNap vs Flow

The clearest difference is chart position: PowNap at #70 against Flow's unranked. Flow's advantage is price ($3.99 vs $5.99) and iOS requirement (16.2 vs 18.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

PowNap costs $5.99 and Flow $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PowNap ships an update weekly, Flow every 5 days. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | PowNap | Flow |
| --- | --- | --- |
| Price | $5.99 | **$3.99** |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/pownap/id6743547737/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Paid | — |
| Best chart rank | **#70** | — |
| Size | 4 MB | 40 MB |
| Requires iOS | 18.6 | **16.2** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Valentin Haberling](https://appshunter.io/developer/1803412455) | [LOKRIS](https://appshunter.io/developer/1399579866) |

## What reviewers say

### PowNap

[App page](https://appshunter.io/ios/app/pownap/id6743547737)

**Currently charting:** #70 Top Paid · Health & Fitness (US App Store)

This app monitors your heart rate to wake you up at the optimal moment during naps, reducing grogginess. It offers custom nap lengths and an 'Infinity Nap' mode for rest without a timer. All processing is done locally for privacy.

**Highlights:** Heart-rate based wake detection, Gentle haptic wake-up, Custom nap lengths, Infinity Nap mode, Nap history, Minimalist interface, Local data processing

**Features:** Apple Watch app

**In-app purchases:** none


### Flow

[App page](https://appshunter.io/ios/app/flow-hydration-tracker/id6758463516)

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

**In-app purchases:** none


## Frequently asked questions

### Is PowNap free?

PowNap costs $5.99, with no in-app purchases.

### Is Flow free?

Flow costs $3.99, with no in-app purchases.

### Do PowNap or Flow have ads?

Neither PowNap nor Flow shows ads.

### Which is updated more often, PowNap or Flow?

PowNap ships an update weekly, and Flow every 5 days. Most recently, PowNap was updated on October 3, 2026 and Flow on October 1, 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.*