# alt Flex vs FB Invincible Plus

alt Flex and FB Invincible Plus are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

alt Flex ships an update every 2 weeks, FB Invincible Plus every 3 weeks. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | alt Flex | FB Invincible Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fb-invincible-plus/id6444554377/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | — | Free |
| Size | 562 MB | 52 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [NEXXBASE MARKETING PRIVATE LIMITED](https://appshunter.io/developer/1487928513) | [TomStar](https://appshunter.io/developer/1603034256) |

## What reviewers say

### alt Flex

[App page](https://appshunter.io/ios/app/alt-flex/id1662826259)

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

**In-app purchases:** none


### FB Invincible Plus

[App page](https://appshunter.io/ios/app/fb-invincible-plus/id6444554377)

Enhance your smartwatch experience by managing notifications for social media, emails, messages, and calls. Track your health with 24/7 heart rate monitoring and multi-sport modes, while precisely recording daily activities, exercise, and sleep patterns.

**Highlights:** Smartwatch notification management, 24/7 heart rate monitoring, Multi-sport mode tracking, Activity and sleep recording, HealthKit synchronization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is alt Flex free?

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

### Is FB Invincible Plus free?

FB Invincible Plus is free to download, with no in-app purchases.

### Do alt Flex or FB Invincible Plus have ads?

Neither alt Flex nor FB Invincible Plus shows ads.

### Which is updated more often, alt Flex or FB Invincible Plus?

alt Flex ships an update every 2 weeks, and FB Invincible Plus every 3 weeks. Most recently, alt Flex was updated on October 4, 2026 and FB Invincible Plus on October 6, 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.*