# Pop vs STEP Prep

The clearest difference is iOS requirement: Pop at 9.0 against STEP Prep's 15.1. On price, update cadence, 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.

Pop ships an update every 3 weeks, STEP Prep every 4 weeks. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Pop | STEP Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | Free | — |
| Size | 249 MB | 37 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Ottiya](https://appshunter.io/developer/1430619590) | [TheTowerTech](https://appshunter.io/developer/1259751444) |

## What reviewers say

### Pop

[App page](https://appshunter.io/ios/app/pop-up/id1430619591)

This app complements a children's book series focused on 21st-century skills. It provides tools for creative storytelling and interactive learning experiences. Future updates promise even more engaging features for young users.

**Highlights:** Creative storytelling tools, Interactive learning experiences, Complements children's book series, Focus on 21st-century skills, Activity book integration, Curriculum guide included

**Features:** macOS Compatibility

**In-app purchases:** none


### STEP Prep

[App page](https://appshunter.io/ios/app/step-prep/id6477911260)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pop free?

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

### Is STEP Prep free?

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

### Do Pop or STEP Prep have ads?

Neither Pop nor STEP Prep shows ads.

### Which is updated more often, Pop or STEP Prep?

Pop ships an update every 3 weeks, and STEP Prep every 4 weeks. Most recently, Pop was updated on October 8, 2026 and STEP Prep on October 2, 2026.

---

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