# BIGBOX vs Sayello

The clearest difference is in-app purchases: Sayello at none against BIGBOX's 10. BIGBOX's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. BIGBOX sells 10 one-off in-app purchases. Sayello asks for nothing beyond the download.

BIGBOX ships an update every 2 weeks, Sayello every 9 days. Both last shipped on October 29, 2026.

## The numbers

| Metric | BIGBOX | Sayello |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (21 ratings)](https://appshunter.io/ios/app/bigbox-fun-english-learning/id1195456423/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 82.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 2.0 GB | 233 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Woongjin Compass, Co., Ltd.](https://appshunter.io/developer/393294989) | [Hodoo Labs Co., Ltd.](https://appshunter.io/developer/1529823937) |

## What reviewers say

### BIGBOX

[App page](https://appshunter.io/ios/app/bigbox-fun-english-learning/id1195456423)

This app offers a comprehensive English learning experience for children through engaging videos, interactive flashcards, and AI-powered speaking practice. It provides personalized recommendations and progress reports to foster self-motivated learning and boost confidence.

**Highlights:** Extensive video library (10,000+), Multimedia flashcards for vocabulary, AI speaking practice with Monty, Personalized video recommendations, Game-like learning system, Progress reports

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| bigboxTV_90days | $13.49 | one-time |
| bigboxTV_180days | $26.00 | one-time |
| wordkingdom_90days | $27.49 | one-time |
| readingocean_90days | $37.00 | one-time |
| bigboxTV_360days | $45.49 | one-time |
| wordkingdom_180days | $52.00 | one-time |
| readingocean_180days | $70.00 | one-time |
| Reading Ocean's 360-day event. | $74.99 | one-time |
| wordkingdom_360days | $93.00 | one-time |
| readingocean_360days | $125.99 | one-time |


### Sayello

[App page](https://appshunter.io/ios/app/sayello/id6797434465)

**In-app purchases:** none


## Frequently asked questions

### Is BIGBOX free?

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

### Is Sayello free?

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

### Do BIGBOX or Sayello have ads?

Neither BIGBOX nor Sayello shows ads.

### Which is updated more often, BIGBOX or Sayello?

BIGBOX ships an update every 2 weeks, and Sayello every 9 days. Most recently, BIGBOX was updated on October 29, 2026 and Sayello on October 29, 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.*