# Step Tracker vs Bubbles

The clearest difference is iOS requirement: Step Tracker at 15.1 against Bubbles's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Step Tracker sells 3 in-app purchases, starting at $2.99 per month and Bubbles sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Step Tracker ships an update every 5 days, Bubbles every 8 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Step Tracker | Bubbles |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 8 days |
| Monetization | Freemium | — |
| Size | 47 MB | 24 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Rik Lydia L Van Kerckhoven](https://appshunter.io/developer/1816436040) | [Sunil PM](https://appshunter.io/developer/1896290467) |

## What reviewers say

### Step Tracker

[App page](https://appshunter.io/ios/app/step-tracker-penguin-waddle/id6746361882)

Hatch and care for a virtual penguin by tracking your daily steps. Build healthy habits with gentle motivation and progress tracking, turning your walks into a fun, rewarding experience.

**Highlights:** Hatch and name a virtual penguin, Track daily steps to keep penguin alive, Set and monitor step goals, View step insights and trends, Home screen widget for motivation, Progress over perfection philosophy

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Penguin Waddle Pro - Monthly | $2.99 | per month |
| Penguin Waddle Pro - Annual | $24.99 | per year |
| Penguin Waddle Pro - Yearly | $29.99 | per year |


### Bubbles

[App page](https://appshunter.io/ios/app/bubbles-step-tracker-pet-fish/id6766446326)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $4.99 | per month |
| Yearly Premium | $29.99 | per year |


## Frequently asked questions

### Is Step Tracker free?

Step Tracker is free to download, with in-app purchases available.

### Is Bubbles free?

Bubbles is free to download, with in-app purchases available.

### Do Step Tracker or Bubbles have ads?

Neither Step Tracker nor Bubbles shows ads.

### Which is updated more often, Step Tracker or Bubbles?

Step Tracker ships an update every 5 days, and Bubbles every 8 days. Most recently, Step Tracker was updated on October 30, 2026 and Bubbles on October 28, 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.*