Comparison

Onzaram vs BoneAge

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

Head to head
About

Onzaram

This platform helps parents monitor their children's growth progress. It offers information on affiliated hospitals for growth plate exams and allows viewing exam results within the app.

Highlights
  • Track child growth progress
  • Find affiliated hospitals for growth exams
  • View growth plate exam results
  • Convenient progress monitoring
  • Holistic growth care information
Read full description

- Onzaram is a platform where you can conveniently keep track of growth progress for your children. - Onzaram provides information of affiliated hospitals where your children can take growth plate exams for accurate growth analyses. - Your children’s growth plate exam results are also viewable in Onzaram.

About

BoneAge

This app analyzes hand X-rays to estimate a child's skeletal age and predict adult height. It offers detailed regional age estimates and growth chart percentiles, all processed securely on your device.

Highlights
  • Skeletal age estimation from hand X-rays
  • 17 anatomical regions with regional age estimates
  • Adult height prediction
  • CDC growth chart percentiles
  • Automatic image validation
  • On-device analysis for privacy
Features
Read full description

BoneAge estimates a child's skeletal age from a hand X-ray in seconds — entirely on your device. BoneAge reads a hand/wrist X-ray the way radiologists do: it examines the finger joints, thumb, carpal bones, and the growth plates of the wrist, then reports an overall bone age in years and months. BONE AGE ASSESSMENT • Select a hand X-ray image and get a result in seconds • Overall skeletal age in years and months • 17 anatomical regions detected and marked on the image, each with its own regional age estimate — see at a glance whether maturation is even • Automatic image validation: photos and non-radiograph images are politely declined GROWTH & ADULT HEIGHT — FREE • Enter age, height, weight, and the parents' heights • Adult height prediction from the child's current growth percentile, plus the classic mid-parental (Tanner) genetic target range • CDC growth-chart percentiles for height, weight, and BMI, with beautiful interactive charts showing exactly where your child sits PRIVATE BY DESIGN • All analysis runs on your device — X-ray images never leave your phone • No account, no tracking, no data collection LANGUAGES English, 简体中文, Español FREE AND PRO The free version validates your image and shows the detected regions; the growth calculator is fully free. Unlock complete results — the overall bone age and all 17 regional ages — with a single-use Credit or the Bone Age Pro subscription (auto-renews until cancelled in your store account settings). IMPORTANT BoneAge is for informational and educational purposes only. It is not a medical device, has not been evaluated by any regulatory authority, and must not be used for clinical diagnosis or treatment decisions. Bone age estimates carry a typical error of several months. Always consult a qualified clinician about your child's growth and development. Privacy & Terms: http://boneage.app/privacy Support: support@dajax.com

Screenshots

Onzaram4 screens
BoneAge4 screens

Verdict

The call

The clearest difference is in-app purchases: Onzaram at none against BoneAge's 2. Onzaram also leads on ads (none vs shown). BoneAge's advantage is update cadence (every 4 days vs monthly). On price, device support and iOS requirement 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. BoneAge sells 2 in-app purchases, starting at $9.99 per year. Onzaram asks for nothing beyond the download.

UpkeepUpdate frequency

Onzaram ships an update monthly, BoneAge every 4 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 6 level
Onzaram versus BoneAge: the parameters behind the verdict, then further details
ParameterOnzaramBoneAge
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyMonthlyEvery 4 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.016.0
Further details — not scored
Size55 MB125 MB
Age rating4+4+
DeveloperCRESCOM Co. Ltd,Dajax LLC

In-app purchases

None

Onzaram

No in-app purchases

2 purchases

BoneAge

Subscriptions1
  • Bone Age Pro$9.991 Year
One-time1
  • 1 Credit$4.99

Questions

Is Onzaram free?
Onzaram is free to download, with no in-app purchases.
Is BoneAge free?
BoneAge is free to download, with in-app purchases available.
Do Onzaram or BoneAge have ads?
BoneAge shows ads; Onzaram does not.
Which is updated more often, Onzaram or BoneAge?
Onzaram ships an update monthly, and BoneAge every 4 days. Most recently, Onzaram was updated on October 25, 2026 and BoneAge on October 29, 2026.

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