# Pebbles App vs KHSB

The clearest difference is update cadence: KHSB at every 10 days against Pebbles App's every 10 months. KHSB also leads on device support (4 vs 1). On price, ads, in-app purchases and iOS requirement 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 10 months, KHSB every 10 days. The most recent releases landed on October 24, 2026 and October 4, 2026 respectively.

## 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 10 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 160 MB | 104 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **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, Vision Pro support

**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 10 months, and KHSB every 10 days. Most recently, Pebbles App was updated on October 24, 2026 and KHSB on October 4, 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.*