Comparison

K vs Feather squadron 2

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

Head to head
About

K

This medical app helps healthcare professionals assess vestibular dysfunction by measuring balance stance metrics. It uses a device's accelerometer to objectively score balance after voice-guided exercises. Professionals can track patient progress over time.

Highlights
  • Vestibular dysfunction assessment
  • Measures balance stance metrics
  • Uses device accelerometer
  • Objective balance scoring
  • Longitudinal patient assessment
  • Voice-guided exercises
Features
Read full description

K-D Balance is an FDA-cleared app used by trained professionals — including athletic trainers and coaches, physical therapists, nurses, physicians, and other trained professionals . This app is intended only for users with an existing K-D Balance account. K-D Balance assesses three balance stances: double stance, right tandem stance and left tandem stance. To use K-D Balance, an iPhone or iPod touch is secured to the individual during the assessment. A hands-free, wearable device holder may be used to help stabilise the device. After step-by-step voice guidance for each stance, an objective balance score is automatically derived by detecting the individual's movements using the device's internal accelerometer. Trained professionals can compare an individual's K-D Balance assessments longitudinally.

About

Feather squadron 2

Features
Read full description

This app contains a variety of fun games for children to play (ages 5 and up) and we measure their listening abilities while they play! This app has a quick screening option for parents and teachers, and a comprehensive testing option for appropriate professionals only. This version has been localised for US English. Please see other versions for other countries/accents. For Teachers and Parents: If you think that your child has listening, language or learning problems that might be related to auditory processing, you can use our quick screening to find out if there are any concerns. If you are concerned, regardless of the screening results, we recommend you visit your local audiologist or speech-language pathologist and recommend this app to get your child's auditory processing abilities tested thoroughly as well as traditional hearing testing performed. This app contains a variety of fun games for children to play (ages 5 and up) and we measure their listening abilities while they play! Your specialist can then recommend the appropriate action including treatments and strengthening exercises based on these results. For the professional: Researchers for years have shown the importance of auditory processing abilities and their correlations to language, reading, and educational abilities. Professionals (audiologists, speech-language pathologists, educational psychologists, paediatricians, etc) have not been able to measure auditory processing abilities routinely. There are a variety of reasons given for this; time-constraints, cost-constraints, limited knowledge on how to administer, limited knowledge on how to interpret the findings. Now, the team at Acoustic Pioneer have created a fast, fun, and easy way to measure multiple areas of auditory processing using an iPad app! The assessment app has been developed and normed on over 1000 children. The results are analysed immediately and you will receive a report on the results for your client comparing their ability to that of same-aged peers and will come with recommendations including therapy options, suggestions for teachers, compensatory strategy suggestions, or other information that would be helpful.

Screenshots

K2 screens
Feather squadron 24 screens

Verdict

The call

The clearest difference is update cadence: Feather squadron 2 at every 5 days against K's every 3 months. K's advantage is iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and device support 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.

UpkeepUpdate frequency

K ships an update every 3 months, Feather squadron 2 every 5 days. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 7 level
K versus Feather squadron 2: the parameters behind the verdict, then further details
ParameterKFeather squadron 2
PriceFreeFree
Rating3.7 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 3 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size147 MB18 MB
Age rating12+4+
DeveloperKing-Devick Test, LLCAcoustic Pioneer

In-app purchases

None

K

No in-app purchases

None

Feather squadron 2

No in-app purchases

Questions

Is K free?
K is free to download, with no in-app purchases.
Is Feather squadron 2 free?
Feather squadron 2 is free to download, with no in-app purchases.
Do K or Feather squadron 2 have ads?
Neither K nor Feather squadron 2 shows ads.
Which is updated more often, K or Feather squadron 2?
K ships an update every 3 months, and Feather squadron 2 every 5 days. Most recently, K was updated on October 24, 2026 and Feather squadron 2 on October 30, 2026.

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