# Polyphasic Sleep Tracker vs Plume

The clearest difference is review sentiment: Polyphasic Sleep Tracker at 63% against Plume's 0%. Polyphasic Sleep Tracker also leads on in-app purchases (none vs 2) and chart position (#104 vs unranked). Plume's advantage is price (Free vs $2.49) and update cadence (weekly vs every 7 months). On ads and device support there is nothing between them.

Plume is free to download; Polyphasic Sleep Tracker costs $2.49 up front. Plume sells 2 in-app purchases, starting at $14.99 per year. Polyphasic Sleep Tracker asks for nothing beyond the download.

Polyphasic Sleep Tracker ships an update every 7 months, Plume weekly. The most recent releases landed on September 15, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Polyphasic Sleep Tracker | Plume |
| --- | --- | --- |
| 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** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#104** | — |
| Size | 2 MB | 18 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [FiveSheep OU](https://appshunter.io/developer/1725654318) | [RailsSquad OU](https://appshunter.io/developer/1655549072) |

## What reviewers say

### Polyphasic Sleep Tracker

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

**Currently charting:** #104 Top Paid · Lifestyle (US App Store)

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


### Plume

[App page](https://appshunter.io/ios/app/plume-private-journal-and-diary/id6754373902)

This app provides a private space for daily reflection and personal growth. It offers guided prompts for gratitude, memories, and accomplishments, visualized in a calendar view. Your entries are kept secure and private on your device with optional iCloud backup.

**Highlights:** Daily gratitude and memory prompts, Calendar view for progress visualization, Face ID protection for entries, Offline functionality, No account required, Optional iCloud backup

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plume - Yearly subscription | $14.99 | per year |
| Plume - Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Polyphasic Sleep Tracker free?

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

### Is Plume free?

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

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

Neither Polyphasic Sleep Tracker nor Plume shows ads.

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

Polyphasic Sleep Tracker ships an update every 7 months, and Plume weekly. Most recently, Polyphasic Sleep Tracker was updated on September 15, 2026 and Plume on September 19, 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.*