Age guide
14 to 17: give ground on hours, hold the line on the bedroom.
With a teenager, you will not win by imposing a daily maximum. You win by protecting sleep, the body and the bedroom. The rest is conversation.
What pediatricians say
The consensus is clear where it matters.
From age 14 onwards the pediatric societies give up on setting an absolute hours ceiling. Clinical evidence points to harm associated with screens in adolescence depending much more on when and how than on how much. In other words: one hour on TikTok at 23:00 does more damage than three hours scattered through the afternoon.
Sleep and activity first
The AAP drops an absolute hours ceiling and centers on protecting 8 to 10 hours of sleep and one hour of daily physical activity.
Phone outside the bed
The WHO highlights that sleeping with a phone next to you degrades sleep quality even if the teen does not use it during the night. Night notifications are the main cause.
Negotiated family plan
The AEPED recommends agreeing rules with the teen, not imposing them. Rules they understand are kept; the rest get worked around.
The real fights
"Everyone has it." True, and irrelevant.
At 14, every friend is in the group, on TikTok, on BeReal, on Snapchat. Denying that loses you the conversation. But "everyone has it" does not mean "everyone uses it at two in the morning". That line is one you can still hold, and the one that most affects their school performance, mood and health.
At this age Quiles works as scaffolding for the conversation, not as a cage. You set the rest window. They decide how to spend their time during the day. Fights go down, agreements go up. And the day they leave for college, they will carry a minimum of trained self-regulation muscle.
A sub-fight: BeReal and Snapchat run on immediate social pressure. "You have 2 minutes for your BeReal". The app is designed to manufacture urgency. Here a per-app cap matters more than a global one: let them respond without the app dictating the rest of their afternoon.
Quiles configuration
A template you can copy.
Base configuration for 14 to 17. The philosophy is to protect the non-negotiable (sleep, bedroom) and let go of the rest. If the teen keeps to it, nothing more to tune; if not, you have concrete data to talk about.
No global hour cap
Enforcing a daily maximum at this age is unworkable and breaks trust. Quiles leaves the daily budget open.
Schedule "Bedroom" 23:30 to 07:00
Hard nightly block. The phone charges in the kitchen; only emergency calls survive that window.
Per-app cap on TikTok
A 60 minute daily sub-limit just for TikTok, without touching the rest. Cap, not block: the algorithm cuts off before it absorbs the afternoon.
How to apply it
Pact, not decree.
Before activating anything, sit down together for fifteen minutes. Explain what Quiles does and does not do (it does not read messages, does not track location continuously (only during a 15-minute Locate session you open or an SOS they press), does not send usage data to the cloud; the data stays on the phone). Negotiate the wind-down time together. If they propose 00:00 instead of 23:30, consider 23:45: the sense of agreement is worth more than half an hour.
Review with them every two weeks. If sleep is protected and grades hold, do not touch anything else. If something drifts, look at the data before talking: what time did they stay up, how much TikTok, how many notifications. The conversation shifts when it stops being a suspicion and starts being a specific question.