K vs Feather squadron 2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Vestibular dysfunction assessment
- Measures balance stance metrics
- Uses device accelerometer
- Objective balance scoring
- Longitudinal patient assessment
- Voice-guided exercises
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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.
Feather squadron 2
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | K | Feather squadron 2 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 147 MB | 18 MB |
| Age rating | 12+ | 4+ |
| Developer | King-Devick Test, LLC | Acoustic Pioneer |
In-app purchases
K
No in-app purchases
Feather squadron 2
No in-app purchases
Questions
Is K free?
Is Feather squadron 2 free?
Do K or Feather squadron 2 have ads?
Which is updated more often, K or Feather squadron 2?
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