# Serenis vs PerfectFit®

The clearest difference is review sentiment: Serenis at 42% against PerfectFit®'s 0%. Serenis also leads on ratings volume (154 vs 1). PerfectFit®'s advantage is in-app purchases (none vs 12) and update cadence (every 6 months vs every 59 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Serenis sells 12 one-off in-app purchases. PerfectFit® asks for nothing beyond the download.

PerfectFit® holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Serenis has 154 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 42% of Serenis's written reviews are positive against 0% of PerfectFit®'s, so the app with the better star average is not the one people write more warmly about.

Serenis ships an update every 59 months, PerfectFit® every 6 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Serenis | PerfectFit® |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (154 ratings)](https://appshunter.io/ios/app/serenis/id1115384286/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/perfectfit/id1552811971/reviews)** |
| Number of ratings | **154** | 1 |
| Positive reviews | **41.7% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 59 months | **Every 6 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 243 MB | 26 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hypnosis and Meditation for Success, LLC](https://appshunter.io/developer/381583151) | [Radius Technologies](https://appshunter.io/developer/1452970152) |

## What reviewers say

### Serenis

[App page](https://appshunter.io/ios/app/serenis/id1115384286)

This app uses sleep learning hypnosis to promote positive change while you sleep. Guided sessions and soothing music work with your subconscious to reshape mindset and beliefs, helping you wake up refreshed and energized.

**Highlights:** Sleep learning hypnosis sessions, Guided relaxation and soothing music, Subconscious mind programming, Customizable program playlists, In-app store for additional programs, Gentle wake-up alarm

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Serenity Sleep Music | Free | one-time |
| Dreamscape Sleep Music | $4.99 | one-time |
| Clear Your Mind Meditation | $4.99 | one-time |
| Confidence Booster | $4.99 | one-time |
| Feel Attractive=Be Attractive | $4.99 | one-time |
| Personal Transformation | $4.99 | one-time |
| The New You | $4.99 | one-time |
| Win Them Over With Humor | $4.99 | one-time |
| Stop Codependency | $4.99 | one-time |
| Calm Nights Sleep Music | $4.99 | one-time |
| Power of Saying No | $4.99 | one-time |
| Unlock All Sale | $21.99 | one-time |


### PerfectFit®

[App page](https://appshunter.io/ios/app/perfectfit/id1552811971)

Measure your ring size accurately for any finger with this app. It offers a seamless solution to avoid manual fittings and solves sizing issues for online jewelry shopping. Get precise measurements down to 1/8 sizes and easy international conversions.

**Highlights:** Accurate ring size measurement, Measures any finger, Precision to 1/8 sizes, International size conversion, E-commerce integration, Customizable appearance

**In-app purchases:** none


## Frequently asked questions

### Is Serenis free?

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

### Is PerfectFit® free?

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

### Which has better reviews, Serenis or PerfectFit®?

PerfectFit® is rated higher. Serenis averages 4.6 out of 5 from 154 ratings, while PerfectFit® averages 5.0 from 1 ratings.

### Do Serenis or PerfectFit® have ads?

Neither Serenis nor PerfectFit® shows ads.

### Which is updated more often, Serenis or PerfectFit®?

Serenis ships an update every 59 months, and PerfectFit® every 6 months. Most recently, Serenis was updated on October 24, 2026 and PerfectFit® on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*