SFERAVIDYA vs Kaixo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SFERAVIDYA
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Escuela online de Tantra Shivaita de Cachemira
Kaixo
Learn Basque from beginner to intermediate levels with structured lessons and varied exercises. Track your progress, practice pronunciation, and access vocabulary lists. This app prioritizes privacy with no accounts, ads, or tracking.
- CEFR level structured lessons
- Multiple exercise types
- Basque pronunciation practice
- Vocabulary lists by topic
- Progress tracking and achievements
- Offline lesson access
- Device-based progress storage
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Kaixo is a free app to learn Basque (euskera) from scratch, step by step, following the European CEFR levels. No accounts. No ads. No tracking. No purchases. WHAT'S INSIDE TODAY · Levels A1 and A2 complete: 114 short lessons, with more levels in the works · 4 exercise types: multiple choice, fill in the blank, flashcards and matching · Basque pronunciation, haptic feedback, and a word-of-the-day widget · Vocabulary lists by topic (beta) · A1 mock exam and speaking practice · Progress tracking, streaks and achievements · Works offline for the lessons you have already opened · Your progress stays on your device: export it with a code or, if you want, keep a backup in your own iCloud WHY IT'S FREE Kaixo exists so no one has to pay to learn a language that's already theirs. PRIVACY · No personal data collected · Your progress is stored on your device; the iCloud backup is optional and yours alone
Screenshots
Verdict
The clearest difference is device support: SFERAVIDYA at 3 against Kaixo's 1. SFERAVIDYA also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and in-app purchases 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.
SFERAVIDYA ships an update every 6 weeks, Kaixo every 3 weeks. The most recent releases landed on October 7, 2026 and October 19, 2026 respectively.
| Parameter | SFERAVIDYA | Kaixo |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 23 MB | 1 MB |
| Age rating | 17+ | 4+ |
| Developer | Juan Jos Quesada | CRISTOBAL RUIZ LORITE |
In-app purchases
SFERAVIDYA
No in-app purchases
Kaixo
No in-app purchases
