Lock Instagram & TikTok behind your OWN notes. Snap them, we turn them into questions - answer one to scroll. Every unlock is a rep for your next exam.
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/
I love this app! The developer is clearly working very hard on this and I use it a lot. That being said, the multiple choice can present some challenges on here for me in terms of memorizing the beginning of the answer/question and it would be really cool to see some short answer or jeopardy style questions to facilitate some deeper learning (maybe thats just me though 😂) Theres a good range of topics that already have questions decks and you can import your own too! I was a little bummed that I no longer saw NCLEX questions but otherwise fantastic so far. I pay for premium and feel its worth the (quite low) cost :)
Amazing concept but some suggestions
stcr1711
This app is very well designed and has an amazing concept. As someone just starting to study for the MCAT, I appreciate how the app already has built in modules that cover each section and don’t require me to research myself. However, the default 5 minute timer gets very annoying very quickly to the point it’s counterintuitive because I just end up clicking the “turn off for 30 mins / 1 hr” button on the homepage. I wish there was a way to customize the timer without paying a subscription, maybe a default of 10 minutes instead or an auto-learning/custom algorithm that blocks the app for different durations at different times of the day. Or a timer like 30 minutes the first time, then 10 minutes, then 5 mins. That’s more realistic as sometimes we do just need a break. Not sure if these features are already available, just with the paid version though.
honestly changed my life
Angelinaturlaaa
i am an avid doomscroller and also a pre-PA student with adhd. this app genuinely has been the best decision ive made this year. it feels so rewarding to get an MCAT question right (even tho im personally not going to take the MCAT) and reduce my instagram usage at the same time. i highly recommend for students or anyone wishing to decrease their time on social media. i love the pause option for nights im not doing work or during my lunch break! please never get rid of the free version. if i had more money id pay for the pro version because thats how much this app genuinely benefits me. it will change your life! do it!
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.
USMLE Step 1 arrives, and Review now explains itself.
• USMLE STEP 1 IS HERE - 468 questions across all 18 organ systems of the Step 1 content outline, from first-pass foundations to full clinical vignettes. One tap from the goal picker, or add it later in Settings → Question Packs.
• EXPLANATIONS IN REVIEW - every question in your Review tab now carries the explanation you saw right after answering, so you can re-read the why, not just the what. Applies to questions answered from this version on.
Version 4.8
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:
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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