# Ultiself | Self vs JustStretch | Flex & Mobility

The clearest difference is ads: Ultiself | Self at none against JustStretch | Flex & Mobility's shown. Ultiself | Self also leads on update cadence (weekly vs every 3 weeks). JustStretch | Flex & Mobility's advantage is rating (4.7 vs 4.3) and iOS requirement (13.0 vs 15.0). On price, review sentiment, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Ultiself | Self sells 26 in-app purchases, starting at $3.49 per 7 days and JustStretch | Flex & Mobility sells 17 in-app purchases, starting at $7.49 per month. Whichever you choose, the download price is not the number that matters.

JustStretch | Flex & Mobility holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 3.9K and 2.4K respectively. Written reviews complicate that: 69% of Ultiself | Self's written reviews are positive against 64% of JustStretch | Flex & Mobility's, so the app with the better star average is not the one people write more warmly about.

Ultiself | Self ships an update weekly, JustStretch | Flex & Mobility every 3 weeks. Both last shipped on October 28, 2026.

## The numbers

| Metric | Ultiself | Self | JustStretch | Flex & Mobility |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (3.9K ratings)](https://appshunter.io/ios/app/ultiself-self-improvement/id1476563238/reviews) | **[4.7 (2.4K ratings)](https://appshunter.io/ios/app/juststretch-flex-and-mobility/id6737028992/reviews)** |
| Number of ratings | **3.9K** | 2.4K |
| Positive reviews | **68.7% of reviews** | 64.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Freemium | Free with in-app purchases |
| Size | 312 MB | 104 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Ultiself Corporation](https://appshunter.io/developer/1476563237) | [TechPioneers Limited](https://appshunter.io/developer/1760674678) |

## What reviewers say

### Ultiself | Self

[App page](https://appshunter.io/ios/app/ultiself-self-improvement/id1476563238)

This app uses AI and science-backed methods to help you build optimal daily routines for self-improvement. It analyzes your habits and provides personalized recommendations to boost confidence, focus, and productivity.

**Highlights:** AI-powered habit analysis, Personalized routine creation, Science-backed habit library, Expert-designed routines, Daily habit tracking, Motivation and stats

**Features:** Vision Pro support

**In-app purchases (26)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Become VIP Membership | $3.49 | per 7 days |
| Ultiself OS1 Monthly | $4.99 | per month |
| Ultiself OS2 Monthly | $5.99 | per month |
| Become VIP Membership | $9.99 | per month |
| Ultiself Yearly DownSell | $14.99 | per year |
| 1 month | $14.99 | per month |
| Ultiself OS1 Yearly | $17.99 | per year |
| Project 120 | $23.49 | per 3 months |
| Ultiself Year with 7 day trial | $26.99 | per year |
| Onboarding Special Yearly | $29.99 | per year |
| Ultiself Regular Yearly | $39.99 | per year |
| Subscription | $39.99 | per 3 months |
| 3 month | $39.99 | per 3 months |
| Onboarding | $44.99 | per year |
| Onboarding Sales Screen | $44.99 | per year |
| 1 year | $46.99 | per year |
| 1 year | $69.99 | per year |
| Onboarding Sales | $89.99 | per year |
| Sleep Mastery Program | $18.49 | one-time |
| Upgrade Your Life From | $24.99 | one-time |
| Ultiself Life Time Biohacking | $29.99 | one-time |
| Upgrade Your Life | $29.99 | one-time |
| Focus Better. Perform Stronger | $32.49 | one-time |
| Break the Pattern. Keep the Power. | $34.49 | one-time |
| Channel Your Addiction Anti Vape | $34.49 | one-time |
| Vape-free roadmap | $34.49 | one-time |

**What reviewers like**

- 🚀 Efficient habit tracking
- 👍 Intuitive and user-friendly interface
- 💡 Personalized recommendations
- 🚀 Gamified experience keeps self-improvement fun
- 👍 Helps establish consistent routines

**What reviewers complain about**

- 🐛 Glitches and bugs
- 💰 Expensive subscription model with hidden costs
- 🔒 Difficulty canceling subscription
- 🔒 Unauthorized charges
- 👎 Lack of customer support and unresponsive to refund requests

**Reported bugs**

- App crashes or freezes during use
- Habit tracking data not saving properly
- Subscription issues and inability to cancel
- Compatibility problems on older devices

**Requested features**

- Ability to organize daily activities on a calendar view
- More language support for non-English users
- Improved sleep and health tracking integration
- Apple Watch app or complications
- Better habit management (e.g., ability to quit habits)


### JustStretch | Flex & Mobility

[App page](https://appshunter.io/ios/app/juststretch-flex-and-mobility/id6737028992)

This app helps you build a daily stretching habit to improve flexibility, relieve pain, and boost overall well-being. It offers guided routines, custom workout creation, and multimedia instructions for all fitness levels.

**Highlights:** Daily stretching routines, Custom workout creation, Audio, image, and video guidance, Live instructor experience, Pain relief and injury prevention, Improved posture and sleep

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

**In-app purchases (17)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Premium | $7.49 | per month |
| 1 Month Premium | $9.99 | per month |
| 1 Month Premium | $19.99 | per month |
| 3 Months Premium | $19.99 | per 3 months |
| 3 Months Premium | $29.99 | per 3 months |
| 12 Months Premium | $29.99 | per year |
| LUCKY DRAW PRIZE | $29.99 | per year |
| 12 Months Premium | $30.99 | per year |
| 12 Months Premium | $35.99 | per year |
| 12 Months Premium | $37.99 | per year |
| One Year Membership | $39.99 | per year |
| 12 Months Premium | $47.99 | per year |
| 7-Day Free Trial | $47.99 | per year |
| one year membership | $49.99 | per year |
| 12 Months Premium | $89.99 | per year |
| Stretch Guide Ebook Bundle | $9.99 | one-time |
| Stretch Guide Ebook Bundle | $12.99 | one-time |

**What reviewers like**

- 🤸‍♀️ Effective stretching routines
- 💪 Variety of exercises
- 🕰️ Guided sessions
- 🌟 Helpful for pain relief

**What reviewers complain about**

- 💰 Requires paid subscription
- 🚫 No free trial
- 🐛 App crashes and bugs
- 🤔 Inconsistent program design

**Reported bugs**

- App not working after latest update
- Inability to open app on certain devices

**Requested features**

- Preparation time before transitions
- Ability to use app on multiple devices


## Frequently asked questions

### Is Ultiself | Self free?

Ultiself | Self is free to download, with in-app purchases available.

### Is JustStretch | Flex & Mobility free?

JustStretch | Flex & Mobility is free to download, with in-app purchases available.

### Which has better reviews, Ultiself | Self or JustStretch | Flex & Mobility?

JustStretch | Flex & Mobility is rated higher. Ultiself | Self averages 4.3 out of 5 from 3.9K ratings, while JustStretch | Flex & Mobility averages 4.7 from 2.4K ratings.

### Do Ultiself | Self or JustStretch | Flex & Mobility have ads?

JustStretch | Flex & Mobility shows ads; Ultiself | Self does not.

### Which is updated more often, Ultiself | Self or JustStretch | Flex & Mobility?

Ultiself | Self ships an update weekly, and JustStretch | Flex & Mobility every 3 weeks. Most recently, Ultiself | Self was updated on October 28, 2026 and JustStretch | Flex & Mobility on October 28, 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.*