Comparison

Biorhythm Graph vs Kronx

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

Head to head
About

Biorhythm Graph

Visualize personal biorhythm cycles with detailed graphs. Supports integration with Today Extension and Apple Watch for convenient access. Track multiple individuals' cycles easily.

Highlights
  • Display multiple biorhythm graphs
  • Support Today Extension
  • Apple Watch app support
  • Complication support
  • Granse support
Features
Read full description

Display multiple person's biorhythm graph. Support Today Extension. Also supports AppleWatch app, Granse, Complication.

About

Kronx

Read full description

In a world overwhelmed with confusing advice, we provide a logical, structured approach that starts with the fundamentals—optimizing your circadian rhythms. By creating daily habits that align your behavior with your body's natural clock, Kronx helps your body work more efficiently—resulting in improved energy, recovery, and performance, and launching your journey toward a healthier future. Key Features: Circadian Rhythm Optimization:
Leverage a science-backed approach that aligns your daily behavior with your body’s natural clock to maximize energy, recovery, and overall performance. Consistent routines, as demonstrated by circadian biology research, enhance metabolic function, balance hormones, and support overall health. Structured Habit Modules:
Establish a robust foundation with targeted interventions at specific times. Habits divided into four modules—Rest, Start, Move, and Calm—align with key periods of the day to keep your physiological processes synchronized with your body's natural rhythms, ensuring every system runs smoothly and efficiently. Personalized Performance & Recovery Tracking:
By measuring your recovery and performance metrics alongside your adherence to key habits, you gain clear insights into how your routines impact your well-being. This data not only empowers you to fine-tune your habits for optimal results but also motivates you to stay on track. Data-Driven Insights & Feedback:
Benefit from trend analysis and actionable recommendations that help you fine-tune your habits for long-term wellness and optimal physiological function.

Screenshots

Biorhythm Graph4 screens
Kronx4 screens

Verdict

The call

The clearest difference is price: Kronx at Free against Biorhythm Graph's $0.99. Kronx also leads on update cadence (weekly vs every 6 months). On ads, in-app purchases, device support and iOS requirement 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

Kronx is free to download; Biorhythm Graph costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Biorhythm Graph ships an update every 6 months, Kronx weekly. The most recent releases landed on October 17, 2026 and September 28, 2026 respectively.

Scorecard2 real differences · 8 level
Biorhythm Graph versus Kronx: the parameters behind the verdict, then further details
ParameterBiorhythm GraphKronx
Price$0.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings1 — better—
Update frequencyEvery 6 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size11 MB13 MB
Age rating4+4+
DeveloperShuji FukumotoElevon.io

In-app purchases

None

Biorhythm Graph

No in-app purchases

None

Kronx

No in-app purchases

Questions

Is Biorhythm Graph free?
Biorhythm Graph costs $0.99, with no in-app purchases.
Is Kronx free?
Kronx is free to download, with no in-app purchases.
Do Biorhythm Graph or Kronx have ads?
Neither Biorhythm Graph nor Kronx shows ads.
Which is updated more often, Biorhythm Graph or Kronx?
Biorhythm Graph ships an update every 6 months, and Kronx weekly. Most recently, Biorhythm Graph was updated on October 17, 2026 and Kronx on September 28, 2026.

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