Sennheiser Smart Control vs Defunc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sennheiser Smart Control
This app allows users to control and customize select Sennheiser soundbars and headphones. Adjust audio settings, manage device connections, and access firmware updates for an enhanced listening experience.
- Device control
- Audio customization
- Firmware updates
- Connectivity management
- Sound settings adjustment
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Do you own one of the following products? Then please download our Smart Control Plus app instead. MOMENTUM 5, MOMENTUM True Wireless 5, HDB 630, MOMENTUM 4, MOMENTUM True Wireless 4, MOMENTUM Sport, MOMENTUM True Wireless 3, ACCENTUM, ACCENTUM Plus, ACCENTUM True Wireless, CX True Wireless, CX Plus True Wireless, CX 500 True Wireless Use this Smart Control app for Sennheiser AMBEO soundbars and the following headphones. AMBEO Soundbar Max, AMBEO Soundbar Plus, AMBEO Soundbar Mini, MOMENTUM 3, MOMENTUM True Wireless, MOMENTUM True Wireless 2, SPORT True Wireless, CX 150BT, CX 350BT, CX 400BT True Wireless, IE 80S BT, PXC 550, PXC 550-II, HD 350BT, HD 450BT, HD 450SE, HD 458BT
Defunc
Personalize your audio experience with custom sound settings and EQ presets. Access user manuals, shop for new products, and locate lost earbuds directly within the app.
- Personalized sound profiles
- EQ presets by genre
- In-app user manuals
- Product shopping links
- Earbud location tracking
- Customizable sound settings
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This all-new Defunc true wireless app places effortless and smooth sound control and personalization for your earbuds in the palm of your hand. Personalize settings, shop and get questions answered. With your personal user account, you can create a completely personalized sound experience for your Defunc product. You can of course switch between preset sounds per genre and your completely personalized settings for those of you who have high quality requirements for your favorite music. FAQ We have of course collected all frequently asked questions and answers for a smooth user experience without hassle. You’ll always be able to get your questions answered on the go for a listening experience without interruptions. SHOP As a Defunc user, you will always have the opportunity to buy other Defunc products at attractive prices through shop-links for products relevant for your love of music and other streaming experiences. YOUR SOUND – YOUR WAY For customizing your sound settings in the app, simply go to settings and tap EQ settings, and use preset settings for pop, rock or whichever genre you love. If you are a true sound fan, tap customize settings instead for a completely personalized listening experience instead. MANUAL No need to look for the manual in your original packaging – you´ll always find the newest and updated user manuals directly in the app. LOST & FOUND Lost your earbuds? Not to worry – you’ll be able to see where they are by seing their location in the app.
Screenshots
Verdict
The clearest difference is rating: Sennheiser Smart Control at 3.4 against Defunc's 1.5. Sennheiser Smart Control also leads on ratings volume (1.5K vs 2) and review sentiment (23% vs 0%). Defunc's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence, 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.
Sennheiser Smart Control holds the better App Store score, 3.4 against 1.5. That said, the two scores are not equally well evidenced: Sennheiser Smart Control has 1.5K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 23% of Sennheiser Smart Control's written reviews are positive against 0% of Defunc's.
Sennheiser Smart Control ships an update monthly, Defunc every 5 weeks. The most recent releases landed on November 8, 2026 and November 3, 2026 respectively.
| Parameter | Sennheiser Smart Control | Defunc |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (1.5K ratings) — better | 1.5 (2 ratings) |
| Positive reviews | 23.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1.5K — better | 2 |
| Update frequency | Monthly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 352 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Sonova Consumer Hearing GmbH | The Art of Utility AB |
Customer experience
Sennheiser Smart Control
Defunc
Bugs and requests
Sennheiser Smart Control
Reported bugs
4 issues- App unable to find/connect to paired headphones
- EQ settings not saving properly
- Firmware update process frequently fails
- Compatibility issues with newer iOS versions
Requested features
5 requests- Option to disable touch controls
- Ability to turn off ANC and transparency mode
- More granular EQ controls
- Persistent settings across power cycles
- Widgets for quick access to common functions
Defunc
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sennheiser Smart Control
No in-app purchases
Defunc
No in-app purchases
Questions
Is Sennheiser Smart Control free?
Is Defunc free?
Which has better reviews, Sennheiser Smart Control or Defunc?
Do Sennheiser Smart Control or Defunc have ads?
Which is updated more often, Sennheiser Smart Control or Defunc?
Other comparisons
