# 51Talk Adults vs Infinity KK

The clearest difference is update cadence: Infinity KK at every 4 days against 51Talk Adults's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

51Talk Adults ships an update every 2 weeks, Infinity KK every 4 days. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | 51Talk Adults | Infinity KK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (162 ratings)](https://appshunter.io/ios/app/51talk-adults/id6741898680/reviews)** | — |
| Number of ratings | **162** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 353 MB | 48 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HELLOWORLD ONLINE EDUCATION PTE. LTD](https://appshunter.io/developer/1678223676) | [MAHMOUD MOATAMED ALI MOHAMMED](https://appshunter.io/developer/1766726222) |

## What reviewers say

### 51Talk Adults

[App page](https://appshunter.io/ios/app/51talk-adults/id6741898680)

This app offers personalized 1-on-1 English lessons with native speakers, designed for adult learners. Focus on speaking practice to build confidence and learn conversational English for various life situations.

**Highlights:** 1-on-1 online lessons, Native English teachers, Speaking practice focus, Personalized learning, Confidence building, Flexible scheduling

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

**In-app purchases:** none


### Infinity KK

[App page](https://appshunter.io/ios/app/infinity-kk/id6814398763)

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

**In-app purchases:** none


## Frequently asked questions

### Is 51Talk Adults free?

51Talk Adults is free to download, with no in-app purchases.

### Is Infinity KK free?

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

### Do 51Talk Adults or Infinity KK have ads?

Neither 51Talk Adults nor Infinity KK shows ads.

### Which is updated more often, 51Talk Adults or Infinity KK?

51Talk Adults ships an update every 2 weeks, and Infinity KK every 4 days. Most recently, 51Talk Adults was updated on October 24, 2026 and Infinity KK on October 23, 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.*