# SISA Smart vs PL Kids by Progress Language

The clearest difference is in-app purchases: SISA Smart at none against PL Kids by Progress Language's 2. SISA Smart also leads on iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PL Kids by Progress Language sells 2 in-app purchases, starting at $3.99 per month. SISA Smart asks for nothing beyond the download.

SISA Smart ships an update weekly, PL Kids by Progress Language every 4 days. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | SISA Smart | PL Kids by Progress Language |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pl-kids-by-progress-language/id6781978508/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 65 MB | 33 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CSN Advance Co., Ltd.](https://appshunter.io/developer/1437333800) | [Progress Language LLC](https://appshunter.io/developer/6781978510) |

## What reviewers say

### SISA Smart

[App page](https://appshunter.io/ios/app/sisa-smart/id1437333801)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### PL Kids by Progress Language

[App page](https://appshunter.io/ios/app/pl-kids-by-progress-language/id6781978508)

This app makes learning English fun for children ages 3-13 through interactive games and lessons. It adapts to your child's skill level with different learning tiers and offers progress tracking for multiple profiles. Designed by educators, it focuses on real learning value.

**Highlights:** Adaptive learning tiers, Interactive games and lessons, Phonics and vocabulary practice, Progress tracking for multiple profiles, Teacher-designed curriculum, Parent language support

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PL Kids Monthly | $3.99 | per month |
| PL Kids Yearly | $29.99 | per year |


## Frequently asked questions

### Is SISA Smart free?

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

### Is PL Kids by Progress Language free?

PL Kids by Progress Language is free to download, with in-app purchases available.

### Do SISA Smart or PL Kids by Progress Language have ads?

Neither SISA Smart nor PL Kids by Progress Language shows ads.

### Which is updated more often, SISA Smart or PL Kids by Progress Language?

SISA Smart ships an update weekly, and PL Kids by Progress Language every 4 days. Most recently, SISA Smart was updated on October 11, 2026 and PL Kids by Progress Language on October 7, 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.*