# PowNap vs Calorie Gap

The clearest difference is price: Calorie Gap at Free against PowNap's $5.99. PowNap's advantage is in-app purchases (none vs 2) and chart position (#48 vs unranked). On update cadence, ads, device support and iOS requirement there is nothing between them.

Calorie Gap is free to download; PowNap costs $5.99 up front. Calorie Gap sells 2 one-off in-app purchases. PowNap asks for nothing beyond the download.

PowNap ships an update weekly, Calorie Gap every 2 weeks. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | PowNap | Calorie Gap |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/pownap/id6743547737/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Paid | — |
| Best chart rank | **#48** | — |
| Size | 4 MB | 6 MB |
| Requires iOS | 18.6 | **18.0** |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Valentin Haberling](https://appshunter.io/developer/1803412455) | [DIANA SMIRNOVA](https://appshunter.io/developer/1885618797) |

## What reviewers say

### PowNap

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

**Currently charting:** #48 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


### Calorie Gap

[App page](https://appshunter.io/ios/app/calorie-gap/id6760667633)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calorie Gap Trial | Free | one-time |
| Calorie Gap Premium | $4.99 | one-time |


## Frequently asked questions

### Is PowNap free?

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

### Is Calorie Gap free?

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

### Do PowNap or Calorie Gap have ads?

Neither PowNap nor Calorie Gap shows ads.

### Which is updated more often, PowNap or Calorie Gap?

PowNap ships an update weekly, and Calorie Gap every 2 weeks. Most recently, PowNap was updated on October 20, 2026 and Calorie Gap on October 17, 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.*