ScrollToll locks Instagram & TikTok until you answer an MCAT or SAT question. Every unlock is a rep — build your blocking streak and review what you missed.
Every time you reach for Instagram, ScrollToll asks one question first. Get it right and you scroll. Miss it and it comes back later. You're studying — without choosing to.
**BUILT ON DISTRIBUTED RECALL™**
The same spaced-repetition science behind every serious study tool (Cepeda et al., 2006), delivered where you actually pick up your phone. Cards you struggle with surface more often. Cards you've mastered get out of your way. You don't have to remember to open the app — you already do, 96 times a day.
**ANKI ONLY WORKS WHEN YOU OPEN ANKI**
We work because you open your phone. Move to China and you'll learn Chinese without trying — you can't help it. ScrollToll does the same thing for the MCAT (and SAT, USMLE prep, mental math, vocabulary, chess, and any topic you want to learn passively).
**HOW IT WORKS**
1. Pick the apps that waste your time
2. ScrollToll locks them behind a single question
3. Solve it — usually an MCAT question, mental math problem, chess tactic, or vocabulary card
4. Get 5 minutes, then it relocks automatically
5. Every unlock IS a study session — distributed across your real day
**WHO IT'S FOR**
- Premeds prepping for the MCAT who want discipline they can't fake
- Med students grinding USMLE Step 1
- Students who open Instagram "for a second" and lose an evening
- Professionals who lose hours to their phone during deep work
- Anyone who's tried Anki, fallen off, and wants the spacing without the discipline tax
**THE MATH**
The average person unlocks their phone 96 times per day. ScrollToll turns 50+ of those into deliberate, spaced-practice moments. In a month, you've passively practiced over 1,400 questions — without ever sitting down with a textbook.
**REAL BLOCKING, NOT A SUGGESTION**
ScrollToll uses Apple's Screen Time API to block apps at the OS level. No overlay you can swipe away. No "are you sure?" button. When an app is locked, it's locked — until you earn your way in.
- OS-level blocking — can't be bypassed or dismissed
- Distributed Recall™ — adaptive spaced repetition built into every unlock
- Auto-relock after 5 minutes — no honor system
- MCAT, USMLE, mental math, chess, vocabulary, and custom packs
- 3 difficulty levels — beginner to advanced
- Works with any app — social media, news, dating apps
- On-device puzzle delivery — your usage stays private
ScrollToll doesn't ask you to quit your phone. It asks you to earn it.
Download free. Upgrade for advanced packs, Distributed Recall™ across all topics, and unlimited app blocking.
Terms of Use: https://northstarlabs.app/terms
Privacy Policy: https://northstarlabs.app/privacy
EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Solid app - and I say that as someone burned out on Kaplan and UWorld. The hook is your distraction apps are locked behind a study question, so you either study or stay off Instagram. Either outcome is a win honestly. The mechanic actually works because you can't just dismiss it. Small note that the questions could use more difficulty variation / matching in some packs but otherwise really solid.
Developer Response
Thanks for this. The difficulty-variation note is fair - tighter difficulty matching within some packs is on the list and actively being worked on. Appreciate you giving it a real shot, and good luck with the prep.
Good App with One Downside
ThatRandomTrash
I really like this app and it teaches a lot of randomized MCAT questions. I like the setup and it shows you how many you got right vs how many you got wrong and explains it VERY well and shows you what subjects you need the most help in, HOWEVER. This app is not truly a free app. After consistently playing you are paywalled to practice questions. You have an hour cooldown to answer 1 question and have to pay for the premium subscription to continue studying. This also means your apps stay locked for an hour unless you pay extra… so it defeats the purpose of the app. I’m not sure if this is because I primarily use the app for studying as opposed to a doom-scroll blocker but yeah.
Actually forces me to learn!
e f nieves
I genuinely feel like I'm learning something and not just doomscrolling mindlessly with this app. It forces me not just to study but snaps me out of the doomscroll, and the questions are like the MCAT for sure. They're not too long but they make me think, and I like that this keeps track of my learning for me. It's bite-sized Anki but better lol
Worth the extra second
BackgroundHammer
It’s a quick way to feel more productive without getting annoyed by the block. Helped me realize I’m not as behind as I feel, and questions provide an explanation for you to reference back on when studying later.
Two big new ways to study:
• SAT PREP - new SAT Reading & Writing and SAT Math packs: 600+ digital-SAT-style questions covering grammar, transitions, words in context, algebra, and more. Questions start short and ramp up in a curated order, and your blocked apps get an SAT-themed lock screen.
• WORDS WORTH KNOWING - a 1,200-word vocabulary pack, from everyday-sharp to the literary shelf. Every card is a sentence puzzle: reason your way to the word, tap the speaker to hear it pronounced, and words you already knew master faster.
• STARTING DIFFICULTY - choose which shelf new vocabulary words are introduced from, any time, on the pack's page.
• A cleaner pack picker, so the strongest packs are easier to find.
Lock your apps. Learn something to get back in.
Version 4.3
The developer, North Star Labs LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Purchases
Usage Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
