51Talk Adults vs Infinity KK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
51Talk Adults
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.
- 1-on-1 online lessons
- Native English teachers
- Speaking practice focus
- Personalized learning
- Confidence building
- Flexible scheduling
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Stop translating, just speak English. 51Talk Adults—from global brand 51Talk—is the English learning app designed especially for Arab adult learners. With real foreign teachers and 1-on-1 lessons, you practice speaking directly, build confidence faster, and learn the language like it’s truly spoken. Flexible, personalized, and built to help adults learn English for work, study, and life.
Infinity KK
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Infinity is the official learning app for Mr. Khalid Khamis’s students, bringing everything for your class into one place, in Arabic or English. Students can take exams, submit homework, watch lesson videos, access lessons and materials, track attendance, and receive notifications for new work, marks, and corrections. Teachers and assistants can manage lessons, exams, materials, homework marking, videos, and attendance, all through one platform.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | 51Talk Adults | Infinity KK |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (162 ratings) — better | — |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 162 — better | — |
| Update frequency | Every 2 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 353 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | HELLOWORLD ONLINE EDUCATION PTE. LTD | MAHMOUD MOATAMED ALI MOHAMMED |
In-app purchases
51Talk Adults
No in-app purchases
Infinity KK
No in-app purchases
Questions
Is 51Talk Adults free?
Is Infinity KK free?
Do 51Talk Adults or Infinity KK have ads?
Which is updated more often, 51Talk Adults or Infinity KK?
Other comparisons
