Comparison

Sonu vs Lappr

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

Head to head
About

Sonu

This app offers personalized, drug-free acoustic resonance therapy for nasal congestion relief. It uses AI and facial scanning to tailor treatments, delivered via a separate wearable band. Track your progress and enjoy convenient, at-home therapy sessions.

Highlights
  • Personalized acoustic resonance therapy
  • Drug-free treatment
  • AI-enhanced facial scanning
  • Bluetooth connectivity
  • Treatment session tracking
  • Micro vibration options
Read full description

SONU provides personalized, drug free, acoustic resonance therapy to treat nasal congestion symptoms caused by allergic and non-allergic rhinitis. SONU is backed by FDA authorization, extensive clinical trials, and enhanced by AI. SONU works with iPhone X or later models and uses Bluetooth to connect with your iPhone. To get started simply download the app and follow the on-screen instructions to get to your 15 minute treatment session. You can choose to relax with the gentle micro vibrations or go about your daily activities. The SONU app takes a scan of your face using the front facing camera and personalizes the acoustic therapy based on your facial anatomy and other proprietary factors. The acoustic resonance is delivered via medical grade bone conduction transducers in the SONU band (a lightweight, wearable headband purchased separately).  SONU is proven to be safe and effective and also has a history of your treatment sessions in the app so you can track your usage over time.  Medical Disclaimer: This app does not replace or provide medical advice and diagnosis. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition. Regulatory Jurisdiction: The SONU band is authorized for use by regulatory authorities only in the USA (FDA) and Singapore (HSA). Any feedback? Contact us at https://soundhealth.life/contact/ Additional information including the privacy policy, biometric notice and terms of use can be found at https://soundhealth.life

About

Lappr

This app uses your iPhone's front camera to automatically count your swimming laps. Set your phone up at the pool's edge and focus on your workout, tracking laps, distance, and pace. Review your history and share your progress with other health platforms.

Highlights
  • Automatic lap counting via front camera
  • Set distance or time goals
  • Track swim time, lap count, and distance
  • Review lap times and pace
  • Workout history and monthly totals
  • Share workouts to Apple Health or Strava
Features
Read full description

Swim your lane. Let Lappr do the counting. Lappr uses your iPhone’s front camera to count your swimming laps. Set your phone beside the pool, start your workout, and focus on your swim. No watch is needed. SET UP. START. SWIM. Place your iPhone on a small mount or tripod at the end of your lane. Keep it on the dry pool deck. Point the screen down the lane. Lappr counts a lap each time you swim out and return to the phone. CHOOSE YOUR WORKOUT • Swim freely, or set a distance or time goal. • See your swim time, lap count, and distance. • Track your progress toward your goal. • Pause for a break and resume when ready. SEE EVERY SPLIT • Review your lap times and pace. • Compare your fastest and slowest laps. • Check and correct your lap count. • See your workout history and monthly totals. SAVE AND SHARE Send your workouts to Apple Health or Strava. Export a workout file. Sign in with Apple to back up your workout history and restore it on a new phone.

Screenshots

Sonu4 screens
Lappr4 screens

Verdict

The call

The clearest difference is rating: Lappr at 5.0 against Sonu's 4.4. Lappr also leads on review sentiment (100% vs 72%). Sonu's advantage is ratings volume (232 vs 5). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Lappr holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Sonu has 232 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 72% of Sonu's written reviews are positive against 100% of Lappr's.

UpkeepUpdate frequency

Sonu ships an update every 3 weeks, Lappr every 10 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Sonu versus Lappr: the parameters behind the verdict, then further details
ParameterSonuLappr
PriceFreeFree
Rating4.4 (232 ratings)5.0 (5 ratings) — better
Positive reviews71.7% of reviews100.0% of reviews — better
Number of ratings232 — better5
Update frequencyEvery 3 weeksEvery 10 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.018.0
Further details — not scored
Size209 MB10 MB
Age rating4+4+
DeveloperSound Health Systems, Inc.ACGAO

Customer experience

Sonu

All ratings232 ratings
Positive84.9%
Neutral3.4%
Negative11.6%
Written reviews53 reviews
Positive71.7%
Neutral3.8%
Negative24.5%

Lappr

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Sonu

Reported bugs

6 issues
  • Infinite login loop
  • App locks after session end
  • Bluetooth connection issues
  • Offline mode non-functional
  • Cannot end session
Show 1 more
  • Server maintenance prevents app use

Requested features

11 requests
  • Bring back old features
  • Provide battery life indicator
  • Add warning for high audio
  • Restore alignment check
  • Allow disconnection from band
Show 6 more
  • Provide feedback on band connection status
  • Improve SONUcast loading time
  • Allow users to remove mediation sounds
  • Improve offline mode functionality
  • Add real number scales to data graphs
  • Enable Bluetooth connection to two devices simultaneously

Lappr

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Sonu

No in-app purchases

None

Lappr

No in-app purchases

Questions

Is Sonu free?
Sonu is free to download, with no in-app purchases.
Is Lappr free?
Lappr is free to download, with no in-app purchases.
Which has better reviews, Sonu or Lappr?
Lappr is rated higher. Sonu averages 4.4 out of 5 from 232 ratings, while Lappr averages 5.0 from 5 ratings.
Do Sonu or Lappr have ads?
Neither Sonu nor Lappr shows ads.
Which is updated more often, Sonu or Lappr?
Sonu ships an update every 3 weeks, and Lappr every 10 days. Most recently, Sonu was updated on November 3, 2026 and Lappr on October 31, 2026.

Other comparisons