BabyPercentile vs Harp
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
BabyPercentile compared with Harp
| Detail | 
BabyPercentile | 
Harp |
|---|
| What it does | Free baby growth percentile calculator using WHO and CDC charts for children 0–5 years
| Private health records on your device
|
|---|
| Stage | Not given
| Not given
|
|---|
| Founded | Not given
| Not given
|
|---|
| Based in | Not given
| Not given
|
|---|
| Pricing model | Free
| Freemium
|
|---|
| Pricing | Not given
| Not given
|
|---|
| Key features | - WHO Child Growth Standards charts for ages 0–60 months
- CDC 2000 growth charts available from age 24 months
- Weight, length/height, head circumference, and weight-for-length measurements
- Separate growth curves for boys and girls
- Corrected age calculation for premature babies born before 37 weeks
- Private browser-only growth log with no server upload
- Trend alert for faltering growth based on UK NICE guidance
- Gain-per-day check between measurements
- Works offline after initial page load
| - Record health events, observations, measurements and reports
- Select and share only what's needed
- No accounts or servers required
- Plain text files in Org Mode format
- Sync only if you decide to, using tools you trust
|
|---|
| What makes it different | - No ads, no account, no data collection—measurements never leave your browser
- Official WHO LMS parameters and CDC data with published formulas shown explicitly
- Handles measurement precision automatically with date-of-birth mode for young babies
- Applies WHO's 0.7 cm adjustment for lying vs standing measurement method at 24 months
- Cross-checked data with automated test suite validating WHO medians and clinical thresholds
| - On-device by default with no analytics or profiteering from health data
- Files you own in standard Org Mode format that you can inspect, back up or migrate
- Cross-platform plain text storage fully under your control
|
|---|
| Community votes | 0 | 0 |
|---|
| DR (Domain Rating by Ahrefs) | 6 ▼ −1 (down) since last check | 31 ▼ −1 (down) since last check |
|---|
| Trust Flow (Majestic) | 5 | 19 |
|---|
| Citation Flow (Majestic) | 23 | 19 |
|---|
| Referring domains (Majestic) | 7 | 22 |
|---|
4 details filled in for both companies.
More alternatives to BabyPercentile More alternatives to Harp