Comparison

Onoera vs Kai

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

Head to head
About

Onoera

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Onoera is your daily breathwork and meditation companion β€” designed to help you reduce stress, sleep better, sharpen focus, and deepen your inner practice. Whether you're brand new to breathwork or an experienced practitioner, Onoera guides you through science-backed techniques with calming narration, real-time visual cues, and haptic feedback that keeps you in rhythm. BREATHING TECHNIQUES Choose from a curated set of guided breathing techniques β€” each with a distinct rhythm, purpose, and narrated introduction to ease you in. MEDITATION TIMER Set a custom session from 1 to 60 minutes, sit back, and let Onoera hold the time for you β€” complete with a gentle gong at the end. GUIDED AUDIO Choose between a male or female narrator. Each session opens with a calming introduction to the technique so you always know what to expect. TRACK YOUR PROGRESS Stay motivated with streaks, weekly activity charts, total minutes practiced, and a full session history β€” all synced between devices and to your account. PERSONALIZED REMINDERS Schedule morning and evening reminders that automatically sync to your local sunrise and sunset times. BUILT FOR YOUR GOALS Tell Onoera what you're working toward β€” reducing stress, better sleep, more energy, sharper focus, or spiritual growth β€” and let the app guide you there. Start breathing with intention today.

About

Kai

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Meet Kai, the AI friend who texts you mid-scroll. You meant to check one thing. Now you've been scrolling for an hour. Kai helps you catch that moment and get back to what you wanted to doβ€”with humor, a little teasing, and accountability that feels personal. A personality worth replying to Kai lives in iMessage. Expect short conversations, quick wit, and a nudge about the things you said mattered. Tell him what you're working toward, whether it's studying, finishing a project, or getting to bed. Text first. Block when needed. When you've agreed on a focus plan, Kai can temporarily block a selected app if you keep scrolling past his check-ins. You can also ask for a lock when you need help getting started, or end one in the app. Your phone. Your rules. Choose which apps Kai watches with Apple's Screen Time permission. Change your selection whenever you want. See your screen-time milestones in the app and manage your connection, permissions, and locks in one place. How your data is used Kai receives the messages you send to Kaiβ€”not your other conversations or content you view or type in other apps. With your permission, OpenAI processes your messages, relevant history, shared details and selected app usage-threshold data to generate replies and check-ins. SendBlue delivers your messages. You can decline or withdraw AI sharing in Machinery > ai privacy. Delete your active Kai account data in the app or by texting "delete everything" and confirming; retention exceptions are explained in the Privacy Policy. Getting started 1. Install Kai and tap "text kai" to start a conversation in iMessage. 2. Enter the code Kai sends you and subscribe through Apple. 3. Allow Screen Time access and choose the apps you want help with. Born in a Stanford dorm. Built for life outside your feed. Subscription A paid monthly subscription is required for app blocking and ongoing accountability. The price is shown before you purchase. Payment is charged to your Apple Account. Your subscription renews automatically unless canceled at least 24 hours before the current period ends. Manage or cancel it in your App Store account settings. Terms of Use: https://kai-production-cba6.up.railway.app/terms Privacy Policy: https://kai-production-cba6.up.railway.app/privacy

Screenshots

Onoera4 screens
Kai4 screens

Verdict

The call

The clearest difference is in-app purchases: Onoera at none against Kai's 1. Onoera also leads on iOS requirement (15.1 vs 18.0). Kai's advantage is ads (none vs shown). On price and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Kai sells 1 in-app purchase, starting at $19.99 per month. Onoera asks for nothing beyond the download.

Scorecard3 real differences Β· 3 level
Onoera versus Kai: the parameters behind the verdict, then further details
ParameterOnoeraKai
PriceFreeFree
Update frequencyEvery 3 monthsβ€”
AdsYesNo β€” better
In-app purchasesNo β€” betterYes
DevicesiPhone, iPod β€” betteriPhone
Requires iOS15.1 β€” better18.0
Further details β€” not scored
Size137 MB3 MB
Age rating4+12+
DeveloperOnoera GmbHALEKSEY STEFANOV RUSENOV

In-app purchases

None

Onoera

No in-app purchases

1 purchases

Kai

Subscriptions1
  • Kai$19.991 Month

Questions

Is Onoera free?
Onoera is free to download, with no in-app purchases.
Is Kai free?
Kai is free to download, with in-app purchases available.
Do Onoera or Kai have ads?
Onoera shows ads; Kai does not.

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