# Dolphin vs Proll

The clearest difference is in-app purchases: Dolphin at none against Proll's 2. Dolphin also leads on ratings volume (1.3K vs 8) and update cadence (every 2 weeks vs every 2 months). Proll's advantage is review sentiment (100% vs 84%). On price, rating, ads and device support there is nothing between them.

Both are free to download. Proll sells 2 in-app purchases, starting at $3.99 per 7 days. Dolphin asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Dolphin against 4.9 for Proll. That said, the two scores are not equally well evidenced: Dolphin has 1.3K ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 84% of Dolphin's written reviews are positive against 100% of Proll's.

Dolphin ships an update every 2 weeks, Proll every 2 months. The most recent releases landed on October 21, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Dolphin | Proll |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (1.3K ratings)](https://appshunter.io/ios/app/dolphin-sat-prep/id6748280981/reviews) | **[4.9 (8 ratings)](https://appshunter.io/ios/app/proll-sat-prep-app-blocker/id6755500929/reviews)** |
| Number of ratings | **1.3K** | 8 |
| Positive reviews | 83.5% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 229 MB | 36 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PaloAI Inc.](https://appshunter.io/developer/1824977301) | [John Edward Baker Bruce](https://appshunter.io/developer/1854263826) |

## What reviewers say

### Dolphin

[App page](https://appshunter.io/ios/app/dolphin-sat-prep/id6748280981)

Master the Digital SAT with a unique, social media-inspired interface. Swipe through thousands of official practice questions with instant, short video explanations. The app intelligently adapts to your learning, focusing on your weak areas for efficient score improvement.

**Highlights:** 10,000+ Official Digital SAT Questions, Short Video Solutions for Every Problem, Personalized Learning Algorithm, Spaced Repetition for Retention, Frictionless Study Design, Score Tracking

**In-app purchases:** none


### Proll

[App page](https://appshunter.io/ios/app/proll-sat-prep-app-blocker/id6755500929)

This app rewards users with screen time for completing real-world tasks, including physical activity and academic work. It locks distracting apps until time is earned, offering customizable goals and optional schedules for focused work sessions.

**Highlights:** Earn screen time by completing tasks, Task-based app unlocking, Upload and verify work for rewards, Physical activity tracking for screen time, Focus sessions with app locking, Customizable goals and optional schedules

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Proll Plus Weekly | $3.99 | per 7 days |
| Proll Plus Monthly | $9.99 | per month |


## Frequently asked questions

### Is Dolphin free?

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

### Is Proll free?

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

### Which has better reviews, Dolphin or Proll?

Proll is rated higher. Dolphin averages 4.8 out of 5 from 1.3K ratings, while Proll averages 4.9 from 8 ratings.

### Do Dolphin or Proll have ads?

Neither Dolphin nor Proll shows ads.

### Which is updated more often, Dolphin or Proll?

Dolphin ships an update every 2 weeks, and Proll every 2 months. Most recently, Dolphin was updated on October 21, 2026 and Proll on October 3, 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.*