# HSG Flex vs NINETY NINE BXNG

The clearest difference is rating: NINETY NINE BXNG at 4.9 against HSG Flex's 2.0. NINETY NINE BXNG also leads on update cadence (every 3 weeks vs every 4 months) and ratings volume (189 vs 1). HSG Flex's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

NINETY NINE BXNG holds the better App Store score, 4.9 against 2.0. That said, the two scores are not equally well evidenced: NINETY NINE BXNG has 189 ratings behind it against 1, so its average is the more settled of the two.

HSG Flex ships an update every 4 months, NINETY NINE BXNG every 3 weeks. The most recent releases landed on October 24, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | HSG Flex | NINETY NINE BXNG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/hsg-flex/id1047765131/reviews) | **[4.9 (189 ratings)](https://appshunter.io/ios/app/ninety-nine-bxng/id1540114880/reviews)** |
| Number of ratings | 1 | **189** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 30 MB | 36 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Health Care Solutions Group](https://appshunter.io/developer/1047765130) | [99 BXNG LLC](https://appshunter.io/developer/1502540715) |

## What reviewers say

### HSG Flex

[App page](https://appshunter.io/ios/app/hsg-flex/id1047765131)

Easily manage your HSA, HRA, and FSA health benefit accounts on the go. Check balances, view claims, file reimbursements, and submit receipts securely with real-time access to your account details.

**Highlights:** Check account balances 24/7, View account summaries and claims, File claims and submit receipts, Manage HSA transactions, Secure login with website credentials, Contact Customer Service

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

**In-app purchases:** none


### NINETY NINE BXNG

[App page](https://appshunter.io/ios/app/ninety-nine-bxng/id1540114880)

Experience high-energy, full-body HIIT workouts inspired by the sweet science of boxing. This fitness center offers group classes and one-on-one training for all ages, making boxing fun and accessible for the whole family.

**Highlights:** High-energy HIIT workouts, Full-body fitness training, Boxing-inspired classes, Group and one-on-one options, Family-friendly fitness

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is HSG Flex free?

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

### Is NINETY NINE BXNG free?

NINETY NINE BXNG is free to download, with no in-app purchases.

### Which has better reviews, HSG Flex or NINETY NINE BXNG?

NINETY NINE BXNG is rated higher. HSG Flex averages 2.0 out of 5 from 1 ratings, while NINETY NINE BXNG averages 4.9 from 189 ratings.

### Do HSG Flex or NINETY NINE BXNG have ads?

NINETY NINE BXNG shows ads; HSG Flex does not.

### Which is updated more often, HSG Flex or NINETY NINE BXNG?

HSG Flex ships an update every 4 months, and NINETY NINE BXNG every 3 weeks. Most recently, HSG Flex was updated on October 24, 2026 and NINETY NINE BXNG on November 3, 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.*