# Lecture Viewer vs Polyphasic Sleep

The clearest difference is in-app purchases: Lecture Viewer at none against Polyphasic Sleep's 5. Lecture Viewer also leads on iOS requirement (13.0 vs 17.6). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Polyphasic Sleep sells 5 in-app purchases, starting at $4.99 per 7 days. Lecture Viewer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Lecture Viewer against 5.0 for Polyphasic Sleep. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Lecture Viewer ships an update every 11 days, Polyphasic Sleep weekly. The most recent releases landed on October 19, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Lecture Viewer | Polyphasic Sleep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/lecture-viewer/id6504312546/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/polyphasic-sleep-polynap/id6746938552/reviews) |
| Number of ratings | 1 | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 58 MB | 66 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Quoc Truong Do](https://appshunter.io/developer/1690769364) | [SALIM TANER CELIK](https://appshunter.io/developer/1799263246) |

## What reviewers say

### Lecture Viewer

[App page](https://appshunter.io/ios/app/lecture-viewer/id6504312546)

This application converts spoken words into text using advanced speech recognition. It offers real-time transcription with high accuracy, making it a powerful tool for capturing lectures and meetings.

**Highlights:** Real-time voice transcription, High accuracy speech recognition, Voice recording functionality, Converts speech to text

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

**In-app purchases:** none


### Polyphasic Sleep

[App page](https://appshunter.io/ios/app/polyphasic-sleep-polynap/id6746938552)

This app guides users through adopting and maintaining polyphasic sleep schedules. It offers personalized recommendations, smart alarms, and progress tracking to help users gain more control over their time and build consistent sleep routines.

**Highlights:** Personalized sleep schedule recommendations, Multiple polyphasic sleep schedule exploration, Smart alarms and nap reminders, Progress tracking for adaptation and consistency, Routine-building feedback, Explore various sleep cycles (Everyman, Uberman, etc.)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PolyNap Premium Weekly | $4.99 | per 7 days |
| PolyNap Premium Monthly | $8.99 | per month |
| Premium Annual Discount | $24.99 | per year |
| PolyNap Premium Yearly | $34.99 | per year |
| PolyNap Premium Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Lecture Viewer free?

Lecture Viewer is free to download, with no in-app purchases.

### Is Polyphasic Sleep free?

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

### Which has better reviews, Lecture Viewer or Polyphasic Sleep?

Lecture Viewer and Polyphasic Sleep are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Lecture Viewer or Polyphasic Sleep have ads?

Neither Lecture Viewer nor Polyphasic Sleep shows ads.

### Which is updated more often, Lecture Viewer or Polyphasic Sleep?

Lecture Viewer ships an update every 11 days, and Polyphasic Sleep weekly. Most recently, Lecture Viewer was updated on October 19, 2026 and Polyphasic Sleep on October 28, 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.*