Comparison

Fitbit Ace vs Aether

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

Head to head
About

Fitbit Ace

Manage your child's Fitbit Ace LTE smartwatch. Securely call, text, track location, and monitor activity. Control contacts and ensure peace of mind.

Highlights
  • Secure calling and texting
  • Real-time location tracking
  • Activity level monitoring
  • Contact management
  • Child's smartwatch management
Read full description

The Fitbit Ace app is your home base for the Fitbit Ace LTE kids smartwatch. Use it to securely call or text message your child, see their location, check in on their activity levels, and manage their contacts. If you’re invited as a contact, you can also use the Fitbit Ace app to securely call or send messages to a child’s Fitbit Ace LTE smartwatch. *Fitbit Ace LTE device requires a paid Ace Pass data plan. Some features only available for kids with a supervised Google Account. Learn more about privacy for Fitbit Ace at g.co/fitbitace/privacy

About

Aether

This app uses AI to analyze your logged moods, symptoms, and wearable data to identify hidden patterns and triggers behind how you feel. It provides personalized insights and observations based on your unique data, helping you understand your well-being better. Log various aspects of your health quickly and privately to uncover connections you might otherwise miss.

Highlights
  • AI-driven pattern and trigger identification
  • Connects wearable data (heart rate, sleep, activity)
  • Personalized insights based on user logs
  • Quick and private daily logging
  • Encrypted data with Face ID/Touch ID protection
  • AI companion for personalized answers
Features
Read full description

WHY DO I FEEL THIS WAY? You've wondered it a hundred times - why the afternoon crash, why the random headaches, why some days just feel off. The answer is usually hiding in your own data. Aether finds it for you. Aether connects your journal with your wearable data (heart rate, HRV, sleep, activity) and uses AI to surface the hidden triggers and patterns behind how you feel - the connections you'd never catch on your own. IT FINDS WHAT YOU'D MISS Tell Aether "my stomach's been off for a few days," and instead of generic tips you might hear: "You tried Thai basil for the first time 4 days ago - the only new thing in your recent entries. Might be worth a look." No jargon. Just real observations based on what YOU logged. POWERED BY YOUR WEARABLE Connect Apple Health to bring in heart rate, HRV, sleep, and activity. Aether ties your body data to how you feel - see how short sleep or late caffeine can show up as tomorrow's mood and energy dip. MEET AURA, YOUR AI COMPANION Aura remembers what you tell it and references your real patterns in every reply. Ask why you've been feeling a certain way and get an answer that's actually about you - not a generic script. TRACK WHATEVER MATTERS Mood, symptoms, sleep, food, activity, medications - log it in your own words in under 30 seconds. The more you share, the sharper your patterns get. WHY PEOPLE LOVE IT - Insights come to you - no digging required - Learns YOUR patterns, not generic advice - Simple enough to use every day - Beautiful, calm design that doesn't overwhelm COMPLETELY PRIVATE Your entries are personal. Aether keeps everything encrypted and locked behind Face ID / Touch ID. What you share stays between you and Aether. Stop guessing why you feel the way you do. Let Aether help you find out. Aether supports general wellness and self-understanding. It does not diagnose, treat, or provide medical advice. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Fitbit Ace4 screens
Aether4 screens

Verdict

The call

The clearest difference is rating: Aether at 5.0 against Fitbit Ace's 4.1. Aether also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Fitbit Ace's advantage is in-app purchases (none vs 2) and ratings volume (221 vs 1). On price, update cadence, ads and monetization model 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. Aether sells 2 in-app purchases, starting at $4.99 per month. Fitbit Ace asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Aether holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Fitbit Ace has 221 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Fitbit Ace ships an update every 3 weeks, Aether every 2 weeks. The most recent releases landed on October 25, 2026 and October 13, 2026 respectively.

Scorecard5 real differences · 5 level
Fitbit Ace versus Aether: the parameters behind the verdict, then further details
ParameterFitbit AceAether
PriceFreeFree
Rating4.1 (221 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings221 — better1
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size196 MB80 MB
Age rating4+12+
DeveloperGoogleThinkComputing LLC

Customer experience

Fitbit Ace

All ratings221 ratings
Positive74.7%
Neutral5.0%
Negative20.4%
Written reviews56 reviews
Positive50.0%
Neutral8.9%
Negative41.1%

Aether

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

Bugs and requests

Fitbit Ace

Reported bugs

15 issues
  • Location, calling, and messaging features not working when disconnected from WiFi
  • Incoming calls on iPhone from Fitbit Ace have no sound, only vibration
  • Message history lost when moving to a new phone
  • App does not connect to the watch
  • App never loads or says no connection
Show 10 more
  • App stops working and requires restoration
  • Customer service never responded
  • Some messages are delayed
  • Some messages disappear after a bit
  • Takes forever to receive text and update location
  • App immediately asks for country and says not allowed
  • App is completely unusable, clicking does nothing
  • App freezes and nothing can be clicked
  • Cannot invite spouse to family account
  • Cannot contact other kids or their friends, only adults

Requested features

15 requests
  • Allow adjusting theme or colors
  • Add basic features like photo sharing
  • Allow communication between friends with watches
  • Enable parents to approve friend connections
  • Allow grandparents abroad to use the app
Show 10 more
  • Add more parental control options
  • More parental settings needed
  • Add voice message feature for parents
  • More child safety features updates
  • More family quests
  • More customization of night time hours
  • Increase size of keyboard buttons
  • Enable parents to call even during school time
  • Modify goals to include other exercises
  • UI tweaks for better user experience

Aether

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Fitbit Ace

No in-app purchases

2 purchases

Aether

Subscriptions2
  • Aether Plus Monthly$4.991 Month
  • Aether Plus Yearly$39.991 Year

Questions

Is Fitbit Ace free?
Fitbit Ace is free to download, with no in-app purchases.
Is Aether free?
Aether is free to download, with in-app purchases available.
Which has better reviews, Fitbit Ace or Aether?
Aether is rated higher. Fitbit Ace averages 4.1 out of 5 from 221 ratings, while Aether averages 5.0 from 1 ratings.
Do Fitbit Ace or Aether have ads?
Neither Fitbit Ace nor Aether shows ads.
Which is updated more often, Fitbit Ace or Aether?
Fitbit Ace ships an update every 3 weeks, and Aether every 2 weeks. Most recently, Fitbit Ace was updated on October 25, 2026 and Aether on October 13, 2026.

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