Comparison

CHI50 vs Well Within App

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CHI50

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
Read full description

At CHI50, Tone, Sculpt, Shake and Sweat through 50 minutes on our state-of-the-art Megaformer machines that will tap into muscles you’ve never used before. Download our app to book classes, buy credits or a membership, and more!

About

Well Within App

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
Read full description

Well Within turns daily cycle observations into a calm, readable chart you can review over time. Record bleeding and one or more sensation, appearance, and mucus observations for a day; revisit completed cycles; and export your chart when you choose. Your chart is stored on your device by default, with optional account-backed cloud backup when you choose it. CHART ONE DAY AT A TIME Record bleeding, sensation, appearance, and mucus observations in a calm daily flow. When you notice more than one mucus observation in a day, keep each one in the daily record while the chart consistently uses the strongest complete observation for that date. SEE WHAT YOU RECORDED Your calendar reflects your entries with clear labels for bleeding, dry days, mucus observations, Peak-type signs, a Peak marker, and P+1–P+3 chart markers. LEARN AS YOUR CHART GROWS Optional, contextual lessons explain how saved observations appear on the calendar and how the app uses terms such as Peak-type, Peak, and P+ markers. Lessons are finite, can be dismissed or hidden, and remain available in Help. REVIEW RETROSPECTIVE CHART CONTEXT When the recorded observations support it, a Cycle Overview brings the cycle length, Peak marker, days from Peak to the next cycle, and recorded pattern into one view. The app keeps limitations visible when dates, entries, or special context are missing. LEARN ACROSS COMPLETED CYCLES Open a completed chart, review its daily log, and see what completed charts have shown about first mucus signs, Peak markers, and the days from Peak to the next cycle. These views describe chart history; they do not predict future ovulation or fertile-window dates. EXPORT ON YOUR TERMS Create a PDF for your records or to share with a qualified practitioner or educator you choose. CHOOSE WHETHER TO ADD BACKUP An account is optional. If you enable cloud backup, you can back up and restore your chart across supported devices and use the in-app controls to delete backed-up chart data or the account. Well Within is an educational charting and record-keeping tool. It does not diagnose, treat, confirm ovulation, or replace individualized instruction or medical care. Pattern interpretation does not currently account for postpartum or breastfeeding, perimenopause, recent hormones or relevant medications, persistent discharge, or other alternate patterns.

Screenshots

CHI504 screens
Well Within App4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard1 real difference · 9 level
CHI50 versus Well Within App: the parameters behind the verdict, then further details
ParameterCHI50Well Within App
PriceFreeFree
Rating5.0 (53 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings53 — better1
Update frequencyEvery 4 weeks — betterEvery 5 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size38 MB27 MB
Age rating4+4+
DeveloperByrd Fitness LLCJim Augustyn

Customer experience

CHI50

All ratings53 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Well Within App

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

CHI50

No in-app purchases

None

Well Within App

No in-app purchases

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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