# Pebbles App vs KHSB

The clearest difference is update cadence: KHSB at every 10 days against Pebbles App's every 5 months. KHSB also leads on device support (4 vs 2). Pebbles App's advantage is iOS requirement (13.4 vs 15.1). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Pebbles App ships an update every 5 months, KHSB every 10 days. Both last shipped on September 10, 2026.

## The numbers

| Metric | Pebbles App | KHSB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pebbles-app/id1338684559/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 160 MB | 104 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Universität Zürich](https://appshunter.io/developer/1055588978) | [UniNow GmbH](https://appshunter.io/developer/1099302123) |

## What reviewers say

### Pebbles App

[App page](https://appshunter.io/ios/app/pebbles-app/id1338684559)

This app helps parents track and celebrate their child's development from birth to age 6. It provides scientific insights, tips, and a digital diary to document milestones with photos and text.

**Highlights:** Age-adapted development steps, Explanatory illustrations, Tips for promoting development, Progress monitoring and documentation, Personal diary with photos, Shareable milestones, Downloadable PDF diary

**Features:** macOS Compatibility

**In-app purchases:** none


### KHSB

[App page](https://appshunter.io/ios/app/khsb/id6469681662)

**Features:** Apple Wallet, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Pebbles App free?

Pebbles App is free to download, with no in-app purchases.

### Is KHSB free?

KHSB is free to download, with no in-app purchases.

### Do Pebbles App or KHSB have ads?

Neither Pebbles App nor KHSB shows ads.

### Which is updated more often, Pebbles App or KHSB?

Pebbles App ships an update every 5 months, and KHSB every 10 days. Most recently, Pebbles App was updated on September 10, 2026 and KHSB on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*