Comparison

Krav Oz vs Hormone OS

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

Head to head
About

Krav Oz

Easily plan and schedule your fitness classes directly from your device. View class schedules, sign up for sessions, and stay informed about ongoing promotions and studio location. Connect with social media to get the latest updates.

Highlights
  • Schedule and plan classes
  • View class schedules
  • Sign up for classes
  • View ongoing promotions
  • Studio location information
  • Connect to social media
Features
Read full description

Download the Krav Oz App today to plan and schedule your classes! View schedules, sign-up for classes, view ongoing promotions, as well as the studio’s location information. Connect to our social media pages to stay up-to-date on everything happening at Krav Oz! Optimize your time and maximize the convenience of signing up for classes from your device! Download this App today!

About

Hormone OS

Features
Read full description

You're not imagining it. The 3am wake-ups, the brain fog before a meeting you prepared for, the week where everything felt harder for no reason you could name. You've probably been told it's stress. Or that you're fine. Or that it's just your age. HormoneOS helps you find out whether there's a pattern — and gives you the words to raise it. HOW IT WORKS 1. Check in for 60 seconds a day. Speak it or tap it. Mood, energy, sleep, pain, and whatever symptoms you're tracking. 2. Connect Apple Health, if you want to. Your Apple Watch, Oura, Whoop, Garmin or ring already writes sleep, heart rate, HRV and temperature there. We read it — never write to it. 3. Every week, get your report. Not a dashboard. A short piece of writing about your own last 28 days, naming what showed up together and when. WHAT MAKES IT DIFFERENT Every check-in answers you back. Log a symptom and you'll see something true about your own history — "that's the 3rd time brain fog has come up this week" — not a badge for showing up. Your 28 days as one picture. Symptoms, period days and your scores on a shared timeline, so clustering is something you see rather than something you have to work out. Tap any day to read exactly what you logged. Written for the appointment. When a pattern is worth raising, the report gives you the sentence to say out loud. Save it to a list that stays put, so it's in your hand in the exam room weeks later. Your words matter. Note that a kid was sick or you were travelling, and the report factors it in instead of blaming your hormones for a bad week that had a cause. WHAT IT ISN'T HormoneOS does not diagnose anything, and it never will. It reports patterns in data you recorded, in the past tense. It doesn't predict your cycle, tell you what you'll feel next week, or explain why something happened — that conversation belongs to you and your doctor. We just make sure you walk in with the evidence. PRIVACY Voice check-ins are transcribed on your phone. Audio never leaves the device and is never uploaded — only the text you confirm. Apple Health access is read-only. We never write anything back. Export everything we hold about you to your inbox, any time, from Settings. Delete your account and all of it goes, permanently. SUBSCRIPTION Free for everyone through January 31, 2027. After that: 14 days free, then $12.99/month or $89.99/year. Logging, trends and your history stay free. Payment is charged to your Apple ID at confirmation of purchase. Your subscription renews automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your Account Settings. Hormone OS helps you notice patterns in your own data. It is not a medical device and does not provide medical advice, diagnosis, or treatment. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Krav Oz3 screens
Hormone OS4 screens

Verdict

The call

The clearest difference is in-app purchases: Krav Oz at none against Hormone OS's 2. Hormone OS's advantage is ads (none vs shown) and update cadence (every 6 days vs every 3 months). On price, 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

Both are free to download. Hormone OS sells 2 in-app purchases, starting at $12.99 per month. Krav Oz asks for nothing beyond the download.

UpkeepUpdate frequency

Krav Oz ships an update every 3 months, Hormone OS every 6 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
Krav Oz versus Hormone OS: the parameters behind the verdict, then further details
ParameterKrav OzHormone OS
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 monthsEvery 6 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.0 — better15.1
Further details — not scored
Size128 MB49 MB
Age rating4+17+
DeveloperKrav Oz, LLCMobilogue, Inc.

In-app purchases

None

Krav Oz

No in-app purchases

2 purchases

Hormone OS

Subscriptions2
  • Hormone OS Monthly3 Months trial$12.991 Month
  • Hormone OS Annual3 Months trial$89.991 Year

Questions

Is Krav Oz free?
Krav Oz is free to download, with no in-app purchases.
Is Hormone OS free?
Hormone OS is free to download, with in-app purchases available.
Do Krav Oz or Hormone OS have ads?
Krav Oz shows ads; Hormone OS does not.
Which is updated more often, Krav Oz or Hormone OS?
Krav Oz ships an update every 3 months, and Hormone OS every 6 days. Most recently, Krav Oz was updated on November 1, 2026 and Hormone OS on October 31, 2026.

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