# Polyphasic Sleep Tracker vs CrossBorders

The clearest difference is price: CrossBorders at Free against Polyphasic Sleep Tracker's $2.49. CrossBorders also leads on update cadence (every 3 weeks vs every 7 months) and iOS requirement (15.1 vs 17.0). Polyphasic Sleep Tracker's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

CrossBorders is free to download; Polyphasic Sleep Tracker costs $2.49 up front. CrossBorders sells 1 one-off in-app purchase. Polyphasic Sleep Tracker asks for nothing beyond the download.

Polyphasic Sleep Tracker ships an update every 7 months, CrossBorders every 3 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Polyphasic Sleep Tracker | CrossBorders |
| --- | --- | --- |
| Price | $2.49 | **Free** |
| Rating | **[3.6 (5 ratings)](https://appshunter.io/ios/app/polyphasic-sleep-tracker/id6449134102/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 2 MB | 108 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FiveSheep OU](https://appshunter.io/developer/1725654318) | [Alexander Burkhard](https://appshunter.io/developer/1892361032) |

## What reviewers say

### Polyphasic Sleep Tracker

[App page](https://appshunter.io/ios/app/polyphasic-sleep-tracker/id6449134102)

This app helps you master polyphasic sleep schedules to optimize your waking hours. It offers customizable plans, smart reminders, and HealthKit integration to track and adjust your sleep patterns.

**Highlights:** Customizable sleep plans, Smart sleep reminders, HealthKit integration, Dark mode, Multiple sleep schedule options

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

**In-app purchases:** none


### CrossBorders

[App page](https://appshunter.io/ios/app/crossborders-where-to-live/id6786047774)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Ranking | $3.99 | one-time |


## Frequently asked questions

### Is Polyphasic Sleep Tracker free?

Polyphasic Sleep Tracker costs $2.49, with no in-app purchases.

### Is CrossBorders free?

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

### Do Polyphasic Sleep Tracker or CrossBorders have ads?

Neither Polyphasic Sleep Tracker nor CrossBorders shows ads.

### Which is updated more often, Polyphasic Sleep Tracker or CrossBorders?

Polyphasic Sleep Tracker ships an update every 7 months, and CrossBorders every 3 weeks. Most recently, Polyphasic Sleep Tracker was updated on November 3, 2026 and CrossBorders on October 31, 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.*