# Prepful vs Study Bubble

The clearest difference is in-app purchases: Study Bubble at none against Prepful's 10. Study Bubble also leads on review sentiment (100% vs 67%) and rating (5.0 vs 4.8). Prepful's advantage is update cadence (every 3 days vs every 6 weeks) and ratings volume (630 vs 3). On price, ads and device support there is nothing between them.

Both are free to download. Prepful sells 10 in-app purchases, starting at $9.99 per 7 days. Study Bubble asks for nothing beyond the download.

Study Bubble holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Prepful has 630 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 67% of Prepful's written reviews are positive against 100% of Study Bubble's.

Prepful ships an update every 3 days, Study Bubble every 6 weeks. Both last shipped on November 10, 2026.

## The numbers

| Metric | Prepful | Study Bubble |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (630 ratings)](https://appshunter.io/ios/app/prepful-sat-and-act-exam-prep/id6777859735/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/study-bubble/id6812132271/reviews)** |
| Number of ratings | **630** | 3 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 127 MB | 17 MB |
| Requires iOS | **15.0** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [StudyX Inc](https://appshunter.io/developer/6777859737) | [Yu-Ning Hsu](https://appshunter.io/developer/6812132273) |

## What reviewers say

### Prepful

[App page](https://appshunter.io/ios/app/prepful-sat-and-act-exam-prep/id6777859735)

This AI-powered app offers personalized SAT prep with short daily sessions and adaptive practice. It diagnoses weaknesses, builds a study plan, and provides a virtual study companion for encouragement and question answering. Aimed at improving scores efficiently.

**Highlights:** AI-powered adaptive practice, Personalized daily study plans, Virtual AI study companion (Pax), 25-minute daily sessions, Score improvement tracking, 60 full mock tests, Detailed explanations

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prepful Pro Weekly | $9.99 | per 7 days |
| Prepful Pro Monthly | $29.99 | per month |
| Prepful Pro Monthly | $39.99 | per month |
| Prepful Pro Monthly | $39.99 | per month |
| Prepful Pro Semi-Annual | $89.99 | per 6 months |
| Prepful Pro Semi-Annual | $99.99 | per 6 months |
| Prepful Pro Quarterly | $99.99 | per 3 months |
| Prepful Pro Semi-Annual | $119.99 | per 6 months |
| Prepful Pro Yearly | $149.99 | per year |
| Prepful Pro Yearly | $149.99 | per year |


### Study Bubble

[App page](https://appshunter.io/ios/app/study-bubble/id6812132271)

This app provides a cozy virtual environment to enhance focus and productivity during study sessions. It offers customizable timers, task management, and a unique study room with a companion.

**Highlights:** Pomodoro timer with breaks, Freestyle study timer, Task management, Daily planning, Cozy study room with companion

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

**In-app purchases:** none


## Frequently asked questions

### Is Prepful free?

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

### Is Study Bubble free?

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

### Which has better reviews, Prepful or Study Bubble?

Study Bubble is rated higher. Prepful averages 4.8 out of 5 from 630 ratings, while Study Bubble averages 5.0 from 3 ratings.

### Do Prepful or Study Bubble have ads?

Neither Prepful nor Study Bubble shows ads.

### Which is updated more often, Prepful or Study Bubble?

Prepful ships an update every 3 days, and Study Bubble every 6 weeks. Most recently, Prepful was updated on November 10, 2026 and Study Bubble on November 10, 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.*