# Ultimateinstability vs Flow Performance

The clearest difference is review sentiment: Flow Performance at 100% against Ultimateinstability's 0%. Flow Performance also leads on rating (5.0 vs 4.6). On price, ratings volume, update cadence and ads there is nothing between them.

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

Flow Performance holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 9 and 5 respectively. Written reviews point the same way: 0% of Ultimateinstability's written reviews are positive against 100% of Flow Performance's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 10, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Ultimateinstability | Flow Performance |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (9 ratings)](https://appshunter.io/ios/app/ultimateinstability/id1398788985/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/flow-performance/id6443516393/reviews)** |
| Number of ratings | **9** | 5 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 210 MB | 131 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Ultimateinstability B.V.](https://appshunter.io/developer/1398788984) | [Owen Leonard](https://appshunter.io/developer/1646783142) |

## 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


### Flow Performance

[App page](https://appshunter.io/ios/app/flow-performance/id6443516393)

Achieve your fitness goals with personalized workout and meal plans. Track progress, log workouts and meals, and connect with your coach via chat and video calls. Integrates with fitness bands and health kits for comprehensive insights.

**Highlights:** Personalized workout plans, Customized meal plans, Progress tracking, Wearable integration, 1-on-1 coach chat & video calls, Daily check-ins

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ultimateinstability free?

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

### Is Flow Performance free?

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

### Which has better reviews, Ultimateinstability or Flow Performance?

Flow Performance is rated higher. Ultimateinstability averages 4.6 out of 5 from 9 ratings, while Flow Performance averages 5.0 from 5 ratings.

### Do Ultimateinstability or Flow Performance have ads?

Neither Ultimateinstability nor Flow Performance shows ads.

### Which is updated more often, Ultimateinstability or Flow Performance?

Ultimateinstability ships an update every 2 months, and Flow Performance every 2 months. Most recently, Ultimateinstability was updated on September 10, 2026 and Flow Performance on June 1, 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.*