# Sound Machine for Deep Sleep vs Emo Lisa

The clearest difference is in-app purchases: Emo Lisa at none against Sound Machine for Deep Sleep's 1. Sound Machine for Deep Sleep's advantage is ads (none vs shown) and update cadence (every 11 days vs every 12 months). On price and device support there is nothing between them.

Both are free to download. Sound Machine for Deep Sleep sells 1 in-app purchase, starting at $4.99 per month. Emo Lisa asks for nothing beyond the download.

Sound Machine for Deep Sleep ships an update every 11 days, Emo Lisa every 12 months. The most recent releases landed on October 20, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Sound Machine for Deep Sleep | Emo Lisa |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (61 ratings)](https://appshunter.io/ios/app/sound-machine-for-deep-sleep/id1217345846/reviews)** | — |
| Number of ratings | **61** | — |
| Positive reviews | 95.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 11 days** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 119 MB | 105 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aaditya Garg](https://appshunter.io/developer/823461462) | [PLAYSHARE VENTURES SRL](https://appshunter.io/developer/1741372244) |

## What reviewers say

### Sound Machine for Deep Sleep

[App page](https://appshunter.io/ios/app/sound-machine-for-deep-sleep/id1217345846)

This app provides a variety of ambient sounds and white noise to help users relax, focus, and cure insomnia. It offers customizable sound mixes, timers, and alarms, and can be used offline. Users can also access a blog for sleep hygiene information.

**Highlights:** Customizable sound mixes, Sleep and focus aid, Offline functionality, Gradual fade timers and alarms, Bedside clock, Sleep hygiene blog

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Version | $4.99 | per month |

**What reviewers like**

- 😴 Highly effective for sleep and insomnia relief
- 🎵 Wide variety of high-quality, realistic sounds
- 🎚️ Ability to mix and combine multiple sounds
- 💾 Custom sound presets can be saved
- 🆓 Excellent free sound options available

**What reviewers complain about**

- 🔐 Limited sounds available without paid subscription
- 💰 Paywall for premium sounds
- 🐛 Subscription issues causing loss of access despite payment
- ⚠️ Sound quality can be inconsistent
- 🎁 Free trial reward system not working as advertised

**Reported bugs**

- Subscription lapses incorrectly reverting paid users to free version
- Free trial reward sounds not unlocking after rating app
- Sound quality inconsistencies

**Requested features**

- Guided sleep meditation with spoken narration
- More sound variety and options
- Removal or reduction of trial-based paywalls
- Better integration with audio streaming services


### Emo Lisa

[App page](https://appshunter.io/ios/app/emo-lisa/id6504460720)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sound Machine for Deep Sleep free?

Sound Machine for Deep Sleep is free to download, with in-app purchases available.

### Is Emo Lisa free?

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

### Do Sound Machine for Deep Sleep or Emo Lisa have ads?

Emo Lisa shows ads; Sound Machine for Deep Sleep does not.

### Which is updated more often, Sound Machine for Deep Sleep or Emo Lisa?

Sound Machine for Deep Sleep ships an update every 11 days, and Emo Lisa every 12 months. Most recently, Sound Machine for Deep Sleep was updated on October 20, 2026 and Emo Lisa on October 27, 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.*