# Linus vs Dolphin

The clearest difference is in-app purchases: Dolphin at none against Linus's 14. Dolphin also leads on ads (none vs shown) and review sentiment (84% vs 68%). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Linus sells 14 in-app purchases, starting at $24.99 per 3 months. Dolphin asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Linus against 4.8 for Dolphin. Both are backed by a comparable volume of ratings — 759 and 1.3K respectively. Written reviews are what separate them: 68% of Linus's written reviews are positive against 84% of Dolphin's.

Linus ships an update every 11 days, Dolphin every 2 weeks. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Linus | Dolphin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (759 ratings)](https://appshunter.io/ios/app/linus-digital-sat-prep/id6740494483/reviews) | **[4.8 (1.3K ratings)](https://appshunter.io/ios/app/dolphin-sat-prep/id6748280981/reviews)** |
| Number of ratings | 759 | **1.3K** |
| Positive reviews | 68.4% of reviews | **83.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 11 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 93 MB | 229 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Linus Labs, Inc.](https://appshunter.io/developer/1790246412) | [PaloAI Inc.](https://appshunter.io/developer/1824977301) |

## What reviewers say

### Linus

[App page](https://appshunter.io/ios/app/linus-digital-sat-prep/id6740494483)

This app offers a gamified approach to preparing for the new Digital SAT. It provides targeted practice for Math, Vocabulary, and Reading sections, with features like daily quests and progress tracking to make studying engaging and effective.

**Highlights:** Gamified learning with quests and streaks, Simulates Bluebook testing experience, Targeted Math, Vocabulary, and Reading practice, Smart study planner for bite-sized lessons, Instant feedback on answers, Progress tracking

**Features:** macOS Compatibility

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Quarterly | $24.99 | per 3 months |
| Turbo | $24.99 | per month |
| Turbo | $24.99 | per month |
| Premium Yearly | $49.99 | per year |
| Turbo Monthly | $99.00 | per month |
| Turbo Monthly | $100.00 | per month |
| Turbo | $149.99 | per year |
| Turbo | $149.99 | per year |
| Turbo | $150.00 | per month |
| Linus Premium | $249.00 | per 3 months |
| Turbo Yearly | $499.00 | per year |
| Turbo | $500.00 | per year |
| Turbo Yearly | $600.00 | per year |
| SAT Test Date Access | $79.00 | one-time |

**What reviewers like**

- 💪 Perfect app
- 👍 Nice game
- 👍 Enjoyable!
- 👍 Best SAT app
- 👍 Easily the BEST FREE SAT Resource out there!

**Requested features**

- Personalized practice
- Practice tests


### 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


## Frequently asked questions

### Is Linus free?

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

### Is Dolphin free?

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

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

Dolphin is rated higher. Linus averages 4.8 out of 5 from 759 ratings, while Dolphin averages 4.8 from 1.3K ratings.

### Do Linus or Dolphin have ads?

Linus shows ads; Dolphin does not.

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

Linus ships an update every 11 days, and Dolphin every 2 weeks. Most recently, Linus was updated on October 14, 2026 and Dolphin on October 16, 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.*