# Flex vs RNest

The clearest difference is update cadence: Flex at every 8 days against RNest's monthly. RNest's advantage is iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Flex ships an update every 8 days, RNest monthly. The most recent releases landed on September 29, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Flex | RNest |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Monthly |
| Size | 49 MB | 181 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [FlexSante](https://appshunter.io/developer/1798915339) | [Rnest360 Health Private Limited](https://appshunter.io/developer/1854677352) |

## What reviewers say

### Flex

[App page](https://appshunter.io/ios/app/flex-professional/id6742541555)

**Features:** macOS Compatibility

**In-app purchases:** none


### RNest

[App page](https://appshunter.io/ios/app/rnest/id6755589286)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flex free?

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

### Is RNest free?

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

### Do Flex or RNest have ads?

Neither Flex nor RNest shows ads.

### Which is updated more often, Flex or RNest?

Flex ships an update every 8 days, and RNest monthly. Most recently, Flex was updated on September 29, 2026 and RNest on October 12, 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.*