Comparison

KidTrauma vs Hidden Hum

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

Head to head
About

KidTrauma

Features
Read full description

KidTrauma is an application developed for parents to support their child in the early aftermath of a traumatic event. Main features: - Trauma-Check: Evidence-based screening questionnaire to check if professional advice is recommended - Age specific information about how to support the child - Individual advice how to deal with the child’s symptoms - Contact details for referrals to mental health professionals - Downloads About us: The KidTrauma application was developed by Professor Markus Landolt from the University Children´s Hospital Zurich, Switzerland. Professor Landolt is trained as a family and behavioral therapist and specialized in clinical work and research with traumatized children and their parents. Responsible for the content: - Prof. Markus Landolt; PhD - Ines Jenni, MSc

About

Hidden Hum

Features
Read full description

Hidden Hum is a first-of-its-kind Early Skills Profiler that celebrates your child’s unique growth journey from birth to age 5. It offers clear insights into their developmental progress, growth outcomes, and personalised recommendations. 1. Quick, engaging, and easy to use 2. Thoughtfully designed experience that keeps you involved and curious 3. Built around your inputs to better understand and support your child 4. Get a detailed Early Skills Profile in under 6 minutes 5. Monitor development across key domains to understand your child’s everyday skills with clarity and confidence

Screenshots

KidTrauma4 screens
Hidden Hum4 screens

Verdict

The call

The clearest difference is update cadence: Hidden Hum at every 3 weeks against KidTrauma's every 12 months. KidTrauma's advantage is iOS requirement (12.2 vs 14.0). 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

KidTrauma ships an update every 12 months, Hidden Hum every 3 weeks. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

Scorecard2 real differences · 4 level
KidTrauma versus Hidden Hum: the parameters behind the verdict, then further details
ParameterKidTraumaHidden Hum
PriceFreeFree
Update frequencyEvery 12 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.2 — better14.0
Further details — not scored
Size126 MB97 MB
Age rating4+4+
DeveloperMarkus LandoltDivamo Well Being Private Limited

In-app purchases

None

KidTrauma

No in-app purchases

None

Hidden Hum

No in-app purchases

Questions

Is KidTrauma free?
KidTrauma is free to download, with no in-app purchases.
Is Hidden Hum free?
Hidden Hum is free to download, with no in-app purchases.
Do KidTrauma or Hidden Hum have ads?
Neither KidTrauma nor Hidden Hum shows ads.
Which is updated more often, KidTrauma or Hidden Hum?
KidTrauma ships an update every 12 months, and Hidden Hum every 3 weeks. Most recently, KidTrauma was updated on November 6, 2026 and Hidden Hum on November 8, 2026.

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