# SFERAVIDYA vs Kaixo

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.

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.

## The numbers

| Metric | SFERAVIDYA | Kaixo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kaixo/id6784369966/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 23 MB | 1 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Juan Jos Quesada](https://appshunter.io/developer/1636907892) | [CRISTOBAL RUIZ LORITE](https://appshunter.io/developer/1815703466) |

## What reviewers say

### SFERAVIDYA

[App page](https://appshunter.io/ios/app/sferavidya/id6749140983)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kaixo

[App page](https://appshunter.io/ios/app/kaixo/id6784369966)

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.

**Highlights:** 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

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

**In-app purchases:** none


## Frequently asked questions

### Is SFERAVIDYA free?

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

### Is Kaixo free?

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

### Do SFERAVIDYA or Kaixo have ads?

Neither SFERAVIDYA nor Kaixo shows ads.

### Which is updated more often, SFERAVIDYA or Kaixo?

SFERAVIDYA ships an update every 6 weeks, and Kaixo every 3 weeks. Most recently, SFERAVIDYA was updated on October 7, 2026 and Kaixo on October 19, 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.*