# Sophia vs Study Bud AI

The clearest difference is update cadence: Study Bud AI at daily against Sophia's every 6 days. Study Bud AI also leads on iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sophia sells 13 in-app purchases, starting at $5.99 per 7 days and Study Bud AI sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Sophia ships an update every 6 days, Study Bud AI daily. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Sophia | Study Bud AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (108 ratings)](https://appshunter.io/ios/app/sophia-general-knowledge/id6760919622/reviews)** | — |
| Number of ratings | **108** | — |
| Positive reviews | 69.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 227 MB | 31 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vik Studios SAS](https://appshunter.io/developer/1896332407) | [Khalid Alenazi](https://appshunter.io/developer/6805030158) |

## What reviewers say

### Sophia

[App page](https://appshunter.io/ios/app/sophia-general-knowledge/id6760919622)

Learn about history, science, philosophy, and more in just 10 minutes a day. This app offers short, engaging lessons with quizzes to test your knowledge and track your progress. It's designed for quick learning and better retention.

**Highlights:** Daily 10-minute lessons, Wide range of subjects, Engaging quiz format, Progress tracking, Ad-free learning experience, Focus on retention

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sophia Premium Weekly | $5.99 | per 7 days |
| Sophia Premium Annual | $8.99 | per year |
| Sophia Premium Monthly | $8.99 | per month |
| Sophia Premium Monthly | $8.99 | per month |
| Sophia Premium Annual | $17.99 | per year |
| Sophia Premium Annual Plan | $17.99 | per year |
| Sophia Premium Annual | $24.99 | per year |
| Sophia Premium Annual Plan | $24.99 | per year |
| Sophia Premium Annual | $34.99 | per year |
| Sophia Premium Annual | $34.99 | per year |
| Sophia Premium Annual | $44.99 | per year |
| Sophia Premium Annual | $49.99 | per year |
| Sophia Premium Annual | $59.99 | per year |


### Study Bud AI

[App page](https://appshunter.io/ios/app/study-bud-ai/id6808664777)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Credits | $1.99 | one-time |
| 500 Credits | $14.99 | one-time |
| 1,500 Credits | $34.99 | one-time |
| 5,000 Credits | $79.99 | one-time |


## Frequently asked questions

### Is Sophia free?

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

### Is Study Bud AI free?

Study Bud AI is free to download, with in-app purchases available.

### Do Sophia or Study Bud AI have ads?

Neither Sophia nor Study Bud AI shows ads.

### Which is updated more often, Sophia or Study Bud AI?

Sophia ships an update every 6 days, and Study Bud AI daily. Most recently, Sophia was updated on October 16, 2026 and Study Bud AI on October 7, 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.*