# Sleep Science HQ vs milo evd simulator

The clearest difference is price: milo evd simulator at Free against Sleep Science HQ's $4.99. milo evd simulator also leads on update cadence (every 2 weeks vs every 7 months) and iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

milo evd simulator is free to download; Sleep Science HQ costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sleep Science HQ ships an update every 7 months, milo evd simulator every 2 weeks. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Sleep Science HQ | milo evd simulator |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.5 (96 ratings)](https://appshunter.io/ios/app/sleep-science-hq-alarm-clock/id966981091/reviews)** | — |
| Number of ratings | **96** | — |
| Positive reviews | 85.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 102 MB | 167 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Phase4 Mobile](https://appshunter.io/developer/787654481) | [Satoshi Kiyofuji](https://appshunter.io/developer/1518722111) |

## What reviewers say

### Sleep Science HQ

[App page](https://appshunter.io/ios/app/sleep-science-hq-alarm-clock/id966981091)

Wake up gently with over 750 natural sounds and customizable sequences. Track your sleep patterns, analyze trends with detailed graphs, and record notes to understand what affects your rest. The app also helps you achieve your sleep goals and remember your dreams.

**Highlights:** 750+ natural wake-up sounds, Customizable sound sequences, Sleep tracking and analysis, Sleep graphs and statistics, Daily notes for routines and dreams, Loudest sound detection

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

**In-app purchases:** none

**What reviewers like**

- 🎵 Extensive library of 750+ natural sounds
- 👍 User-friendly interface and easy setup
- 💤 Effective sleep cycle tracking and monitoring
- 🌅 Gentle wake-up sequences with customizable sounds
- 💰 One-time purchase with no subscription fees

**What reviewers complain about**

- 🐛 App crashes and freezes frequently
- 🔋 High battery consumption overnight
- 📱 Requires keeping app in foreground to function
- ⚠️ Sleep detection accuracy issues
- 🔊 Limited traditional alarm tone options

**Reported bugs**

- App crashes on startup for some devices
- Microphone fails to record sleep sounds
- Sleep data shows 0 hours despite time in bed
- Alarm triggers at unscheduled times
- Sound preview doesn't play on demand

**Requested features**

- Multiple alarm times for different weekdays
- Integration with Apple Health app
- Adjustable alarm fade-in duration
- Volume preview when setting alarms
- Traditional alarm tone options with fade-in


### milo evd simulator

[App page](https://appshunter.io/ios/app/milo-evd-simulator/id6744915992)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sleep Science HQ free?

Sleep Science HQ costs $4.99, with no in-app purchases.

### Is milo evd simulator free?

milo evd simulator is free to download, with no in-app purchases.

### Do Sleep Science HQ or milo evd simulator have ads?

Neither Sleep Science HQ nor milo evd simulator shows ads.

### Which is updated more often, Sleep Science HQ or milo evd simulator?

Sleep Science HQ ships an update every 7 months, and milo evd simulator every 2 weeks. Most recently, Sleep Science HQ was updated on November 6, 2026 and milo evd simulator on October 30, 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.*