Fitbit Ace vs D1 Training
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Secure calling and texting
- Real-time location tracking
- Activity level monitoring
- Contact management
- Child's smartwatch management
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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
D1 Training
Manage your fitness journey with this app designed for athletes. View class and personal training schedules, book sessions, and purchase memberships. Stay updated with announcements and shop for gear.
- View class and personal training schedules
- Book classes and PT sessions
- Join waitlists for classes
- Purchase memberships and class packs
- Access D1 announcements and shop gear
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Take your training to the next level with the all-new D1 Training Mobile App! Built from the ground up for the D1 athlete, this app puts everything you need to stay on top of your fitness journey right at your fingertips. Key Features * Class & Personal Training Schedules: Easily view all upcoming classes and personal training sessions at your D1 Training location * Booking Made Simple: Book classes and PT sessions for you or your family members in just a few taps * Waitlist Access: Join waitlists for full classes and secure your spot as soon as it opens * Trial Sessions: Sign up for trial sessions and experience the D1 Training difference * Memberships & Class Packs: Purchase memberships, renewals, and class packs directly through the app * Stay Connected: Get the latest D1 announcements, updates, and shop your favorite D1 Training gear Coming Soon * Milestones, streaks and leader boards with social sharing! * Progress Tracking: Log weights, reps, and sets, track workout progress, and view your workout history to measure your growth Designed to meet the unique needs of the D1 athlete, the D1 Training Mobile App is your one-stop digital destination for optimizing your training experience. Download now and make the most of your time at D1 Training!
Screenshots
Verdict
The clearest difference is rating: D1 Training at 4.8 against Fitbit Ace's 4.1. D1 Training also leads on review sentiment (90% vs 49%) and update cadence (weekly vs every 3 weeks). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
D1 Training holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 216 and 89 respectively. Written reviews point the same way: 49% of Fitbit Ace's written reviews are positive against 90% of D1 Training's.
Fitbit Ace ships an update every 3 weeks, D1 Training weekly. Both last shipped on September 22, 2026.
| Parameter | Fitbit Ace | D1 Training |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (216 ratings) | 4.8 (89 ratings) — better |
| Positive reviews | 49.1% of reviews | 90.0% of reviews — better |
| Number of ratings | 216 — better | 89 |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 195 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | D1 Sports Franchise LLC | |
Customer experience
Fitbit Ace
D1 Training
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
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- 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
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- 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
D1 Training
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Fitbit Ace
No in-app purchases
D1 Training
No in-app purchases
Questions
Is Fitbit Ace free?
Is D1 Training free?
Which has better reviews, Fitbit Ace or D1 Training?
Do Fitbit Ace or D1 Training have ads?
Which is updated more often, Fitbit Ace or D1 Training?
Other comparisons
