# Ultimateinstability vs Tier One PT

The clearest difference is rating: Tier One PT at 5.0 against Ultimateinstability's 4.6. Ultimateinstability's advantage is update cadence (every 2 months vs every 10 months) and ratings volume (9 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Tier One PT holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Ultimateinstability has 9 ratings behind it against 1, so its average is the more settled of the two.

Ultimateinstability ships an update every 2 months, Tier One PT every 10 months. The most recent releases landed on September 10, 2026 and June 22, 2026 respectively.

## The numbers

| Metric | Ultimateinstability | Tier One PT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (9 ratings)](https://appshunter.io/ios/app/ultimateinstability/id1398788985/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tier-one-pt/id6751425549/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 10 months |
| Monetization | Free | Free |
| Size | 210 MB | 43 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Ultimateinstability B.V.](https://appshunter.io/developer/1398788984) | [Tier One Physical Therapy LLC](https://appshunter.io/developer/1834985451) |

## What reviewers say

### Ultimateinstability

[App page](https://appshunter.io/ios/app/ultimateinstability/id1398788985)

Access over 2000 animated exercises and pre-built workout programs using specialized equipment. Connect with a community of professionals and sync your workouts with Apple Health.

**Highlights:** 180+ animated exercises, 2000+ 3D animated exercises, Pre-built workout programs, UI-community for professionals, Sync with Apple Health App

**Features:** macOS Compatibility

**In-app purchases:** none


### Tier One PT

[App page](https://appshunter.io/ios/app/tier-one-pt/id6751425549)

Access your personalized home exercise program with HD instructional videos. Securely message your provider, track progress with achievement badges, and monitor daily activity. Book appointments and select your preferred language.

**Highlights:** Personalized Home Exercise Program, HD Instructional Videos, Secure Messaging with Provider, Achievement Badges and Trophies, Activity Tracking Integration, Appointment Booking, Multi-language Support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ultimateinstability free?

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

### Is Tier One PT free?

Tier One PT is free to download, with no in-app purchases.

### Which has better reviews, Ultimateinstability or Tier One PT?

Tier One PT is rated higher. Ultimateinstability averages 4.6 out of 5 from 9 ratings, while Tier One PT averages 5.0 from 1 ratings.

### Do Ultimateinstability or Tier One PT have ads?

Neither Ultimateinstability nor Tier One PT shows ads.

### Which is updated more often, Ultimateinstability or Tier One PT?

Ultimateinstability ships an update every 2 months, and Tier One PT every 10 months. Most recently, Ultimateinstability was updated on September 10, 2026 and Tier One PT on June 22, 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.*