# Dolphin vs Radiant

Dolphin and Radiant both sit at 4.8 stars, but that hides the real split: 84% of Dolphin's written reviews are positive against 37% of Radiant's. Dolphin also leads on in-app purchases (none vs 21). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Radiant sells 14 in-app purchases, starting at $1.99 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 4.8 for Radiant. Both are backed by a comparable volume of ratings — 1.3K and 973 respectively. Written reviews are what separate them: 84% of Dolphin's written reviews are positive against 37% of Radiant's.

Dolphin ships an update every 2 weeks, Radiant every 10 days. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Dolphin | Radiant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.3K ratings)](https://appshunter.io/ios/app/dolphin-sat-prep/id6748280981/reviews)** | [4.8 (973 ratings)](https://appshunter.io/ios/app/radiant-speaking-challenges/id6751936053/reviews) |
| Number of ratings | **1.3K** | 973 |
| Positive reviews | **83.7% of reviews** | 36.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 229 MB | 123 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PaloAI Inc.](https://appshunter.io/developer/1824977301) | [Loshi Technologies, LLC](https://appshunter.io/developer/1786701886) |

## 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


### Radiant

[App page](https://appshunter.io/ios/app/radiant-speaking-challenges/id6751936053)

This app offers guided speaking challenges to enhance articulation, speech clarity, and confidence. It focuses on natural improvements by helping users understand their speaking patterns and make them more effective in everyday conversations.

**Highlights:** Guided speaking challenges, Improve articulation, Enhance speech clarity, Boost speaking confidence, Track speaking patterns, Natural speech improvement

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Radiant Gold Weekly | $1.99 | per 7 days |
| Radiant Gold Weekly | $2.99 | per 7 days |
| Radiant Gold Weekly | $3.99 | per 7 days |
| Radiant Gold Weekly | $6.99 | per 7 days |
| Radiant Gold Annual | $9.99 | per year |
| Radiant Gold Weekly | $9.99 | per 7 days |
| Radiant Gold Annual | $19.99 | per year |
| Radiant Gold Annual | $29.99 | per year |
| Radiant Gold Annual | $39.99 | per year |
| Radiant Gold Annual | $49.99 | per year |
| Radiant Gold Annual | $59.99 | per year |
| Radiant Gold Annual | $79.99 | per year |
| Radiant Gold Annual | $109.99 | per year |
| Radiant Gold Annual | $119.99 | per year |


## Frequently asked questions

### Is Dolphin free?

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

### Is Radiant free?

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

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

Dolphin is rated higher. Dolphin averages 4.8 out of 5 from 1.3K ratings, while Radiant averages 4.8 from 973 ratings.

### Do Dolphin or Radiant have ads?

Neither Dolphin nor Radiant shows ads.

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

Dolphin ships an update every 2 weeks, and Radiant every 10 days. Most recently, Dolphin was updated on October 22, 2026 and Radiant on October 24, 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.*