# Dolphin vs AP Prep

The clearest difference is in-app purchases: Dolphin at none against AP Prep's 3. Dolphin also leads on chart position (#210 vs unranked). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. AP Prep sells 3 in-app purchases, starting at $9.99 per month. Dolphin asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Dolphin | AP Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.4K ratings)](https://appshunter.io/ios/app/dolphin-sat-prep/id6748280981/reviews)** | — |
| Number of ratings | **1.4K** | — |
| Positive reviews | 84.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free | — |
| Best chart rank | **#210** | — |
| Size | 220 MB | 12 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [PaloAI Inc.](https://appshunter.io/developer/1824977301) | [Shanghai Xushu Information Technology Co., Ltd.](https://appshunter.io/developer/1733615663) |

## What reviewers say

### Dolphin

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

**Currently charting:** #210 Top Free · Education (US App Store)

Build a consistent study habit for SAT and ACT exams with daily practice questions and detailed explanations. Track your progress and focus on areas needing improvement, with optional features to block distracting apps.

**Highlights:** Daily practice questions, Worked explanations, Vocabulary review, Focus Mode for distraction blocking, Progress and streak tracking, Widgets for quick access

**In-app purchases:** none


### AP Prep

[App page](https://appshunter.io/ios/app/ap-prep-practice-and-score/id6783233848)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AP Prep Pro Monthly | $9.99 | per month |
| AP Prep Pro 3-Month | $19.99 | per 3 months |
| AP Prep Pro — Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Dolphin free?

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

### Is AP Prep free?

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

### Do Dolphin or AP Prep have ads?

Neither Dolphin nor AP Prep shows ads.

### Which is updated more often, Dolphin or AP Prep?

Dolphin ships an update every 2 weeks, and AP Prep every 2 weeks. Most recently, Dolphin was updated on November 8, 2026 and AP Prep on October 31, 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.*