# Dolphin vs Prep1st SAT Study Check

Dolphin and Prep1st SAT Study Check are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Dolphin ships an update every 2 weeks, Prep1st SAT Study Check every 3 weeks. The most recent releases landed on October 21, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Dolphin | Prep1st SAT Study Check |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.3K ratings)](https://appshunter.io/ios/app/dolphin-sat-prep/id6748280981/reviews)** | — |
| Number of ratings | **1.3K** | — |
| Positive reviews | 83.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 229 MB | 29 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PaloAI Inc.](https://appshunter.io/developer/1824977301) | [Grant Parker](https://appshunter.io/developer/1870925682) |

## 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


### Prep1st SAT Study Check

[App page](https://appshunter.io/ios/app/prep1st-sat-study-check-in/id6758107832)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dolphin free?

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

### Is Prep1st SAT Study Check free?

Prep1st SAT Study Check is free to download, with no in-app purchases.

### Do Dolphin or Prep1st SAT Study Check have ads?

Neither Dolphin nor Prep1st SAT Study Check shows ads.

### Which is updated more often, Dolphin or Prep1st SAT Study Check?

Dolphin ships an update every 2 weeks, and Prep1st SAT Study Check every 3 weeks. Most recently, Dolphin was updated on October 21, 2026 and Prep1st SAT Study Check 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.*