Comparison

Harmony vs StillKoi

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

Head to head
About

Harmony

This app helps you understand and sync your lifestyle with your natural body rhythms. It offers personalized guidance for energy, meals, movement, and mindset based on your cycle phase. It also includes smart tracking, daily insights, and an AI assistant for daily organization and self-awareness.

Highlights
  • Cycle Syncing Guidance
  • Smart Cycle Tracking
  • Daily Insights & Rituals
  • AI Lifestyle Assistant
  • Partner Connection
  • Privacy-Focused Data
Read full description

More than a period tracker. Harmony helps you sync your lifestyle with your cycle. Your energy, meals, movement, and mindset, all in one place. Your body follows a unique rhythm that shapes how you feel, move, and think. Harmony helps you understand it and work with it, not against it. Most cycle apps track your period. Harmony helps you live better because of it. What Harmony offers: - Cycle Syncing Guidance Personalized tips for each phase of your cycle. What to eat, how to move, and how to recharge based on where you are right now. - Smart Cycle Tracking Log your period, symptoms, and mood. Get a clear view of your current phase and what's coming next. - Daily Insights & Rituals Meditations, journaling prompts, and mindset tips aligned with your natural rhythm. - AI Lifestyle Assistant Friendly, personalized guidance to help you stay organized and in tune with yourself every day. - Harmony Together Connect with your partner so they can better understand and support your cycle. - Your data stays yours. Built with privacy at its core. We never sell your data. Ever. Harmony is a lifestyle and wellness tool. It does not provide medical advice or diagnoses. Start with a free trial and find your rhythm. Web: https://harmony-cycle.app Terms of Use: https://legal.rocapine.com/terms Privacy Policy: https://legal.rocapine.com/privacy

About

StillKoi

Features
Read full description

StillKoi helps you slow down, focus, and build calm habits—one moment at a time. Whether you’re trying to sleep better, concentrate longer, or simply unwind, StillKoi gives you simple, gentle tools to shape your mental environment. What you can do with StillKoi: • Mix calming sounds — rain, wind, nature, and ambient tones • Save and replay your mixes anytime • Guided meditations for sleep, focus, and relaxation • Guided breathing sessions backed by proven techniques • Daily rituals to build consistency without pressure • Mood check-ins & progress tracking to reflect and grow Designed with a soft, minimalist aesthetic, StillKoi stays out of your way and lets calm happen naturally—no pressure, no noise. Perfect for: • Sleep & rest • Focus & deep work • Stress relief • Gentle habit building • Mindful daily routines StillKoi is not about forcing calm. It’s about making space for it.

Screenshots

Harmony4 screens
StillKoi4 screens

Verdict

The call

The clearest difference is in-app purchases: StillKoi at none against Harmony's 18. StillKoi also leads on ads (none vs shown) and device support (3 vs 1). On price, update cadence 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

Both are free to download. Harmony sells 13 in-app purchases, starting at $4.99 per 7 days. StillKoi asks for nothing beyond the download.

UpkeepUpdate frequency

Harmony ships an update every 6 days, StillKoi every 11 days. The most recent releases landed on October 27, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 7 level
Harmony versus StillKoi: the parameters behind the verdict, then further details
ParameterHarmonyStillKoi
PriceFreeFree
Rating4.7 (10K ratings) — better—
Positive reviews35.8% of reviews—
Number of ratings10K — better—
Update frequencyEvery 6 days — betterEvery 11 days
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.415.1 — better
Further details — not scored
Size180 MB145 MB
Age rating4+4+
DeveloperRocapineManal Gharrabou

Bugs and requests

Harmony

Reported bugs

2 issues
  • Calendar issues with incorrect period dates
  • Inability to select accurate period dates

Requested features

3 requests
  • More community features
  • Longer meditation exercises
  • Additional recipes and meal plans

StillKoi

Not enough reviews yet to summarise bugs or requests.

In-app purchases

13 purchases

Harmony

Subscriptions13
  • Premium Subscription$4.997 Days
  • Harmony Monthly Plan$9.991 Month
  • Monthly Subscription$14.991 Month
Show 10 more
  • Harmony Premium Pan$14.991 Month
  • Harmony Yearly Plan7 Days trial$34.991 Year
  • Yearly Premium1 Year trial$34.991 Year
  • Harmony Yearly Plan2 variants$34.991 Year
  • Harmony Premium7 Days trial$39.993 Months
  • Premium Subscription$39.996 Months
  • Yearly Subscription7 Days trial2 variants$49.991 Year
  • Yearly Subscription7 Days trial$59.991 Year
  • Harmony Yearly Plan7 Days trial$79.991 Year
  • Harmony Yearly Plan7 Days trial$89.991 Year
None

StillKoi

No in-app purchases

Questions

Is Harmony free?
Harmony is free to download, with in-app purchases available.
Is StillKoi free?
StillKoi is free to download, with no in-app purchases.
Do Harmony or StillKoi have ads?
Harmony shows ads; StillKoi does not.
Which is updated more often, Harmony or StillKoi?
Harmony ships an update every 6 days, and StillKoi every 11 days. Most recently, Harmony was updated on October 27, 2026 and StillKoi on October 11, 2026.

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