# Air Tracker, Device Detector. vs Sleep Calculator Plus

Air Tracker, Device Detector. and Sleep Calculator Plus both sit at 4.6 stars, but that hides the real split: 100% of Sleep Calculator Plus's written reviews are positive against 0% of Air Tracker, Device Detector.'s. Sleep Calculator Plus also leads on in-app purchases (none vs 3) and update cadence (daily vs every 9 days). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Air Tracker, Device Detector. sells 3 in-app purchases, starting at $6.99 per 7 days. Sleep Calculator Plus asks for nothing beyond the download.

Sleep Calculator Plus holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 71 and 32 respectively. Written reviews point the same way: 0% of Air Tracker, Device Detector.'s written reviews are positive against 100% of Sleep Calculator Plus's.

Air Tracker, Device Detector. ships an update every 9 days, Sleep Calculator Plus daily. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Air Tracker, Device Detector. | Sleep Calculator Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (71 ratings)](https://appshunter.io/ios/app/air-tracker-device-detector/id6739254297/reviews) | **[4.8 (32 ratings)](https://appshunter.io/ios/app/sleep-calculator-plus/id6741904327/reviews)** |
| Number of ratings | **71** | 32 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Daily** |
| Monetization | Freemium | **Free** |
| Size | 71 MB | 1 MB |
| Requires iOS | **15.3** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Adan Malon](https://appshunter.io/developer/1764279694) | [Kevin Hausen](https://appshunter.io/developer/1794777127) |

## What reviewers say

### Air Tracker, Device Detector.

[App page](https://appshunter.io/ios/app/air-tracker-device-detector/id6739254297)

Easily locate misplaced Bluetooth devices with this app's radar-like indicators and precise distance estimations. Enjoy an ad-free experience and unlimited searches with a subscription.

**Highlights:** Bluetooth device scanning, Distance estimation, Radar-like indicators, Advanced device tracking, Unlimited searches, Ad-free experience

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $6.99 | per 7 days |
| Monthly Premium Access | $14.99 | per month |
| Annual Premium Access | $31.99 | per year |


### Sleep Calculator Plus

[App page](https://appshunter.io/ios/app/sleep-calculator-plus/id6741904327)

This utility helps you determine the ideal times to sleep or wake up by calculating based on natural 90-minute sleep cycles. It aims to help users feel more refreshed and energized by waking them between these cycles.

**Highlights:** Calculate optimal bedtime, Find best wake-up times, Supports 12/24 hour formats, Intuitive interface, Dark design for nighttime, No ads or in-app purchases

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

**In-app purchases:** none


## Frequently asked questions

### Is Air Tracker, Device Detector. free?

Air Tracker, Device Detector. is free to download, with in-app purchases available.

### Is Sleep Calculator Plus free?

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

### Which has better reviews, Air Tracker, Device Detector. or Sleep Calculator Plus?

Sleep Calculator Plus is rated higher. Air Tracker, Device Detector. averages 4.6 out of 5 from 71 ratings, while Sleep Calculator Plus averages 4.8 from 32 ratings.

### Do Air Tracker, Device Detector. or Sleep Calculator Plus have ads?

Neither Air Tracker, Device Detector. nor Sleep Calculator Plus shows ads.

### Which is updated more often, Air Tracker, Device Detector. or Sleep Calculator Plus?

Air Tracker, Device Detector. ships an update every 9 days, and Sleep Calculator Plus daily. Most recently, Air Tracker, Device Detector. was updated on October 24, 2026 and Sleep Calculator Plus on October 21, 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.*