Rollcallz HQ vs Dolphin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rollcallz HQ
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Rollcallz HQ is your one stop app for all your business communication needs - connecting customers, employees, and prospects. Use your landline phone number to send and receive SMS messages.
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.
- 10,000+ Official Digital SAT Questions
- Short Video Solutions for Every Problem
- Personalized Learning Algorithm
- Spaced Repetition for Retention
- Frictionless Study Design
- Score Tracking
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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.
Screenshots
Verdict
Rollcallz HQ and Dolphin 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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 6, 2026 and October 22, 2026 respectively.
| Parameter | Rollcallz HQ | Dolphin |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (1.3K ratings) — better |
| Positive reviews | — | 83.7% of reviews |
| Number of ratings | — | 1.3K — better |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 46 MB | 229 MB |
| Age rating | 4+ | 4+ |
| Developer | Rollcallz | PaloAI Inc. |
In-app purchases
Rollcallz HQ
No in-app purchases
Dolphin
No in-app purchases
