# CHI50 vs Well Within App

The clearest difference is ratings volume: CHI50 at 53 against Well Within App's 1. On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for CHI50 against 5.0 for Well Within App. That said, the two scores are not equally well evidenced: CHI50 has 53 ratings behind it against 1, so its average is the more settled of the two.

CHI50 ships an update every 4 weeks, Well Within App every 5 weeks. The most recent releases landed on September 22, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | CHI50 | Well Within App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (53 ratings)](https://appshunter.io/ios/app/chi50/id6479721304/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/well-within-app/id6760519448/reviews) |
| Number of ratings | **53** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 38 MB | 27 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Byrd Fitness LLC](https://appshunter.io/developer/1737074121) | [Jim Augustyn](https://appshunter.io/developer/1884802520) |

## What reviewers say

### CHI50

[App page](https://appshunter.io/ios/app/chi50/id6479721304)

Book fitness classes and manage your membership for state-of-the-art Megaformer machine workouts. Engage muscles you've never used before in 50-minute sessions designed to tone, sculpt, shake, and sweat.

**Highlights:** Book fitness classes, Purchase credits, Buy memberships, Manage account, State-of-the-art Megaformer workouts

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

**In-app purchases:** none


### Well Within App

[App page](https://appshunter.io/ios/app/well-within-app/id6760519448)

This app provides structured charting of daily observations to offer clear insights into your menstrual cycle. It uses a rules-based interpretation of your data to help you understand your current phase and recognize long-term patterns. Your data is kept private and can be exported for personal records or sharing.

**Highlights:** Structured observation charting, Rules-based cycle interpretation, Pattern recognition and trend analysis, Private data storage, Chart export functionality, Creighton-style principles

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

**In-app purchases:** none


## Frequently asked questions

### Is CHI50 free?

CHI50 is free to download, with no in-app purchases.

### Is Well Within App free?

Well Within App is free to download, with no in-app purchases.

### Which has better reviews, CHI50 or Well Within App?

CHI50 and Well Within App are both rated 5.0 out of 5 on the App Store, from 53 and 1 ratings respectively.

### Do CHI50 or Well Within App have ads?

Neither CHI50 nor Well Within App shows ads.

### Which is updated more often, CHI50 or Well Within App?

CHI50 ships an update every 4 weeks, and Well Within App every 5 weeks. Most recently, CHI50 was updated on September 22, 2026 and Well Within App on September 8, 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.*