Comparison

Dolphin vs Proll

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Dolphin

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
Read full description

Build a steady SAT and ACT study habit with Dolphin. Practice in a swipeable feed, work through explanations, and return to the questions and skills that need more attention. PRACTICE A LITTLE EVERY DAY Answer Math, Reading, English, and Science questions, review vocabulary, and set a daily learning goal. UNDERSTAND YOUR ANSWERS Use worked explanations, video solutions where available, and Pip the Tutor to explore a problem. Save questions and revisit mistakes as you study. MAKE ROOM TO FOCUS With your permission, Focus Mode uses Apple's Screen Time controls to block apps you choose on your selected schedule. Complete your lesson goal to unlock them, or take a break when you need one. KEEP YOUR MOMENTUM Track your streak and progress, and add Dolphin widgets to keep your learning goal close by. Dolphin offers optional in-app subscriptions. Features and content availability may vary. SAT is a trademark of the College Board, and ACT is a trademark of ACT, Inc. Dolphin is not affiliated with or endorsed by either organization.

About

Proll

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
Read full description

Key Features: Earn Screen Time Screen time isn’t given—it’s earned. Complete real-world tasks to unlock access to distracting apps. Task-Based Unlocking Earn time by completing activities like SAT questions or other standardized test prep. App Locking Distracting apps stay inaccessible until earned time is available—no bypassing, no “just five more minutes.” Flexible Goals Customize how much work earns how much time, based on your priorities and routines. Minimal, Intentional Design No shame, no pressure—just a clear system that rewards discipline. Proll requires a paid subscription ($4/week or $10/month auto-renewing) to lock distracting apps and access full SAT prep features. 3 Day Free Trial before you commit to the monthly subscription! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Dolphin4 screens
Proll4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Dolphin versus Proll: the parameters behind the verdict, then further details
ParameterDolphinProll
PriceFreeFree
Rating4.8 (1.3K ratings)4.9 (8 ratings) — better
Positive reviews83.5% of reviews100.0% of reviews — better
Number of ratings1.3K — better8
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better16.6
Further details — not scored
Size229 MB36 MB
Age rating4+4+
DeveloperPaloAI Inc.John Edward Baker Bruce

Customer experience

Dolphin

All ratings1,333 ratings
Positive96.1%
Neutral1.5%
Negative2.4%
Written reviews91 reviews
Positive83.5%
Neutral2.2%
Negative14.3%

Proll

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Dolphin

No in-app purchases

2 purchases

Proll

Subscriptions2
  • Proll Plus Weekly$3.997 Days
  • Proll Plus Monthly3 Days trial$9.991 Month

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.

Other comparisons