# Sleep vs IQ Spot Differ

The clearest difference is rating: Sleep at 4.3 against IQ Spot Differ's 3.7. Sleep also leads on ratings volume (9.8K vs 3). IQ Spot Differ's advantage is monetization model (free with in-app purchases vs subscription). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Sleep sells 12 in-app purchases, starting at $2.99 per 7 days and IQ Spot Differ sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Sleep holds the better App Store score, 4.3 against 3.7. That said, the two scores are not equally well evidenced: Sleep has 9.8K ratings behind it against 3, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Sleep | IQ Spot Differ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (9.8K ratings)](https://appshunter.io/ios/app/sleep/id1447478883/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/iq-spot-differ-brain-relax/id6711331626/reviews) |
| Number of ratings | **9.8K** | 3 |
| Positive reviews | 59.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 61 MB | 341 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mosaic S.r.l.](https://appshunter.io/developer/570748343) | [STORMY GROWTH LIMITED](https://appshunter.io/developer/1716842872) |

## What reviewers say

### Sleep

[App page](https://appshunter.io/ios/app/sleep/id1447478883)

Drift off to sleep with a variety of soothing content, including narrated stories, guided meditations, and ambient sounds. Manage stress and anxiety to improve sleep quality and establish a consistent bedtime routine.

**Highlights:** Bedtime stories, Sleep meditations, Extensive sound library, Fade out timer, Bedtime reminder

**Features:** Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $2.99 | per 7 days |
| Weekly Pro with Free Trial | $2.99 | per 7 days |
| Weekly Premium with Free Trial | $3.99 | per 7 days |
| Weekly Bundle - Free Trial | $3.99 | per 7 days |
| Weekly Bundle - No Free Trial | $3.99 | per 7 days |
| Help fall asleep | $4.99 | per 7 days |
| Weekly Premium with Free Trial | $4.99 | per 7 days |
| Weekly Bundle | $4.99 | per 7 days |
| Weekly Bundle with Free Trial | $4.99 | per 7 days |
| Bundle - Weekly - Free Trial | $6.99 | per 7 days |
| Bundle - Weekly | $6.99 | per 7 days |
| Monthly Pro with Free Trial | $9.99 | per month |

**What reviewers like**

- 🌙 Relaxing and calming sounds
- 🌟 Customizable sound mixing
- 🕰️ Sleep timer feature
- 🌊 Variety of nature/ambient sounds
- 📚 Soothing bedtime stories

**What reviewers complain about**

- 💰 Excessive premium subscription cost
- 🔒 Limited free features
- 🙄 Aggressive upselling for premium
- 🔇 Subpar quality of some free sounds
- 🤖 Robotic/unnatural narration in stories

**Reported bugs**

- Sound playback stops when screen is locked
- Frequent app crashes on older devices

**Requested features**

- More free sound options
- Ability to save custom sound mixes
- Integration with smart home devices
- Offline mode for sound playback
- Personalized sleep tracking and analysis


### IQ Spot Differ

[App page](https://appshunter.io/ios/app/iq-spot-differ-brain-relax/id6711331626)

Sharpen your observation skills with this puzzle game that challenges you to find subtle differences between two images. Enjoy a relaxing, brain-boosting experience with numerous levels and stunning visuals, suitable for all ages.

**Highlights:** Find subtle differences between images, Relaxing, no-timer gameplay, Numerous challenging levels, Stunning HD visuals, Family-friendly cognitive enhancement, Zoom and hint features

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IQ Spot Differ Weekly Premium | $3.99 | per 7 days |
| IQ Spot Differ Weekly Premium | $3.99 | per 7 days |
| IQ Spot Differ Yearly Premium | $19.99 | per year |
| IQ Spot Differ 300 coins | $0.99 | one-time |


## Frequently asked questions

### Is Sleep free?

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

### Is IQ Spot Differ free?

IQ Spot Differ is free to download, with in-app purchases available.

### Which has better reviews, Sleep or IQ Spot Differ?

Sleep is rated higher. Sleep averages 4.3 out of 5 from 9.8K ratings, while IQ Spot Differ averages 3.7 from 3 ratings.

### Do Sleep or IQ Spot Differ have ads?

Neither Sleep nor IQ Spot Differ shows ads.

### Which is updated more often, Sleep or IQ Spot Differ?

Sleep ships an update every 3 weeks, and IQ Spot Differ every 3 weeks. Most recently, Sleep was updated on October 24, 2026 and IQ Spot Differ on October 24, 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.*