# Pillow vs SleepisolBio

The clearest difference is in-app purchases: SleepisolBio at none against Pillow's 6. SleepisolBio also leads on iOS requirement (15.6 vs 17.0). Pillow's advantage is chart position (#170 vs unranked). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Pillow sells 6 in-app purchases, starting at $19.99 per month. SleepisolBio asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 10 days. The most recent releases landed on October 21, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Pillow | SleepisolBio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (96K ratings)](https://appshunter.io/ios/app/pillow-sleep-tracker/id878691772/reviews)** | — |
| Number of ratings | **96K** | — |
| Positive reviews | 41.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | Every 10 days |
| Monetization | Freemium | — |
| Best chart rank | **#170** | — |
| Size | 690 MB | 1.1 GB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPod, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [Neybox Digital Ltd.](https://appshunter.io/developer/624507369) | [leesol](https://appshunter.io/developer/1584929445) |

## What reviewers say

### Pillow

[App page](https://appshunter.io/ios/app/pillow-sleep-tracker/id878691772)

**Currently charting:** #170 Top Grossing · Health & Fitness (US App Store)

This app helps you understand and improve your sleep. It automatically tracks your sleep cycles, analyzes heart rate, and records audio events like snoring. Get personalized insights and tips to wake up feeling refreshed.

**Highlights:** Automatic sleep tracking, Smart alarm clock, Snore and sleep talking recorder, Sleep cycle analysis, Heart rate analysis, Personalized sleep tips, Sleep aid library

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pillow Premium - Monthly | $19.99 | per month |
| Premium Sleep Tracking | $49.99 | per year |
| Pillow Premium - Annual | $49.99 | per year |
| Pillow Premium - Annual | $49.99 | per year |
| Pillow Premium - Quarterly | $59.99 | per 3 months |
| Pillow Premium - Legacy | $249.99 | one-time |

**What reviewers like**

- 👍 Helpful for tracking sleep patterns
- 🚀 Automatic sleep detection
- 🎨 Colorful and intuitive interface
- 📊 Detailed sleep data and analysis
- 🔊 Audio recording of sleep sounds

**What reviewers complain about**

- 🐛 Inaccurate sleep tracking
- 🔒 Paywall for basic features
- 🔋 High battery consumption
- 🤔 Confusing alarm and nap features
- 🤷‍♀️ Inconsistent sync between watch and phone

**Reported bugs**

- App crashes or freezes
- Sleep data not syncing properly
- Audio recording issues
- Alarm not working as expected

**Requested features**

- Ability to edit sleep sessions and data
- Sleep cycle trends and insights
- Dream journal integration
- More customization options for alarms and sounds


### SleepisolBio

[App page](https://appshunter.io/ios/app/sleepisolbio/id6739985543)

**In-app purchases:** none


## Frequently asked questions

### Is Pillow free?

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

### Is SleepisolBio free?

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

### Do Pillow or SleepisolBio have ads?

Neither Pillow nor SleepisolBio shows ads.

### Which is updated more often, Pillow or SleepisolBio?

Pillow ships an update every 10 days, and SleepisolBio every 10 days. Most recently, Pillow was updated on October 21, 2026 and SleepisolBio on October 11, 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.*