The short answer Use Focus if notifications are the problem, App Limits if habitual overuse is the problem, Downtime if you need a protected schedule, and a review-linked blocker only if access needs to depend on completing a study target. Start with the least restrictive option that reliably protects the session.
1. Diagnose the interruption first
For three study sessions, note exactly what breaks your concentration. Did a notification pull your attention away? Did you open an app without an alert? Did you start scrolling before Anki? Or did an unrealistic review queue make any phone restriction feel impossible?
- Incoming interruption: a text, alert, badge, or call captures attention.
- Habitual opening: you reach for the same app during a difficult card or short pause.
- Schedule drift: entertainment expands into the time reserved for reviews.
- Reward-order problem: you want leisure apps available only after a chosen study milestone.
- Workload problem: the due queue is too large for the available time.
These are not interchangeable. In a controlled laboratory study, phone call and text notifications disrupted performance on a sustained-attention task even when participants did not interact with the phone. That finding supports silencing interruptions; it does not show that hard blocking is necessary for every student or that it directly improves grades.
2. Compare the iPhone options
| Option | What it controls | Best for | Important limitation |
|---|---|---|---|
| Focus | Notifications, people, Home Screen pages, and automatic schedules | Interruptions during a study block | It does not prevent you from opening an app |
| App Limits | Daily time for chosen apps or categories | Reducing total use across the day | Limits are time-based and can be ignored by default |
| Downtime | A scheduled period when only allowed apps and contacts remain available | Protecting fixed morning, class, or evening hours | You must configure Always Allowed and enable Block at Downtime for a harder boundary |
| Review-linked blocking | Access to selected apps until a study target is reached | Enforcing “reviews before distractions” | It requires a realistic goal, and some tools also require a desktop workflow |
3. Build a Study Focus
Go to Settings > Focus and create a custom Focus or adapt an existing one. Allow notifications only from people and apps that may be genuinely important during study. You can also choose a simple Home Screen page and schedule the Focus by time, location, or app.
Apple’s official Focus guide explains these controls. A practical first version is:
- Allow important contacts and time-sensitive school or work tools.
- Silence social, shopping, news, game, and nonessential group-chat notifications.
- Hide the Home Screen page that contains your most automatic distractions.
- Schedule Focus for the study window you actually keep—not an aspirational all-day block.
Run that setup for several sessions. If notifications were the real problem, you may not need anything more restrictive.
4. Use App Limits for daily overuse
Go to Settings > Screen Time > App Limits > Add Limit. Select individual apps or categories, choose a daily allowance, and use Customize Days if weekends need a different limit.
App Limits answer “How much time do I want to spend here today?” They do not answer “Have I finished the work that matters?” Apple notes that Screen Time limits can be ignored by default, so treat the alert as a decision point unless your settings create a firmer boundary.
Avoid category overreach Blocking an entire category can catch useful apps along with distracting ones. Review the selected apps before saving the limit.
5. Use Downtime for protected hours
Go to Settings > Screen Time > Downtime, turn on a schedule, and choose the hours you want protected. Then open Always Allowed and keep essential apps and contacts available.
According to Apple’s Screen Time guide, Downtime leaves only allowed calls, messages, and apps available. If Block at Downtime is off, restricted apps are dimmed but can still be continued; turn it on if you want the schedule to act as a stronger boundary.
Downtime is a good match for a predictable routine such as “no entertainment apps from 7:00 to 9:00 a.m.” It is a poor match when your clinical shifts, classes, or work hours change every day unless you update the schedule.
6. Do not make the phone unusable
Before testing any restriction, list what must remain available. The exact list is personal, but common examples include:
- Phone, Messages, and important contacts
- AnkiMobile or another app used for the session
- Authentication, password-manager, and campus-access apps
- Maps, transit, rideshare, and parking
- Medical, accessibility, safety, and caregiving tools
- School portals, calendars, files, calculators, and reference tools
Test urgent access while you are calm. A useful focus system protects study time without making essential communication or safety depend on completing flashcards.
7. Test one setup for seven days
Choose one configuration and log a week before stacking more restrictions. Keep the review goal and new-card settings stable during the test when possible, so you can tell whether the phone setup—not a changing workload—helped.
| Measure | What it reveals |
|---|---|
| Started at the cue? | Whether the routine begins reliably |
| Interruptions | Whether alerts, habitual opening, or another cause remains |
| Reviews and minutes | Whether the study target fits the schedule |
| Overrides | Whether the rule was too weak or too restrictive |
| Essential access issues | Which apps or contacts need to remain available |
After seven days, keep the simplest setup that worked. Add stronger blocking only when the log shows a specific gap.
Keep Anki current across iPhone and desktop
If you study on more than one device, sync before switching and again after the session. The AnkiMobile cloud-sync guide explains how AnkiWeb transfers cards, review history, and changes between iPhone or iPad and desktop Anki. A device that has not synced does not automatically know about work completed elsewhere.
Also watch the underlying study load. The Anki Manual explains that adding new cards increases future review work and recommends stopping new cards while catching up on an overdue backlog. A phone boundary cannot make an unsustainable queue healthy.
When review-linked blocking is worth considering
If Focus successfully quiets the phone but you still open the same distractions before studying, you may want access to depend on a completed milestone. AnkiLock uses Apple’s Screen Time controls to restrict the iPhone apps you select until progress from its desktop Anki add-on reaches your configured goal. You choose the decks, goal, apps, and blocking schedule.
The important limitation is workflow: AnkiLock does not directly count individual answers inside AnkiMobile. A mobile review session must sync to AnkiWeb, then desktop Anki must sync before the add-on can report that progress. Students who mostly review away from a computer may be better served by Focus, App Limits, or Downtime.
See AnkiLock’s setup, goal, and syncing details if that tradeoff fits your normal study routine.
Common questions
Can Focus block an app from opening?
No. Focus manages notifications and presentation, and can switch Home Screen pages, but it is not an app-use limit. Use Screen Time or a compatible blocker when opening the app itself is the problem.
Should I use App Limits or Downtime?
Use App Limits to manage total daily use. Use Downtime when you want specific hours protected. Some students use both, but test one first so you know which rule helps.
Can an iPhone-only Anki session unlock AnkiLock immediately?
No. The current product receives review progress from its desktop Anki add-on, so AnkiMobile reviews require the AnkiWeb-to-desktop sync step described above.
Sources and further reading
Editorial transparency: AnkiLock used AI-assisted tools to support drafting and editing.