CycleRolt turns the proven 20–80 charging rule into clear numbers — a quiet dark dashboard for logging and protecting your battery health, by hand.
Estimates only. CycleRolt never touches your device's battery management system — it just does the math you'd otherwise do in your head.
Each tool is an independent, interactive card on a clean canvas — input by hand, read at a glance, store on device.
See exactly how many minutes your device needs to reach the safe 80% threshold, so you can unplug at the right moment and lower cell stress.
Keep a tidy history of maximum-capacity readings across every household device, and follow each degradation curve with sliders and tactile selectors.
Lock your current reference metrics onto one screen. Review your physical assets or update your baselines instantly with fast manual inputs.
🔋We're CycleRolt — a small crew of repair-bench tinkerers, firmware hobbyists, and people who refuse to toss a phone because "the battery's shot." We built the quiet, honest tool we always wanted, with nothing running behind your back.
⚡Our mission is straightforward. Most cells don't die — they're worn out early by careless charging. CycleRolt takes the proven 20–80 habit and turns a vague rule of thumb into clear, actionable numbers.
📊Inside is a calm dark dashboard of independent cards: a charge calculator, a health-log matrix that follows fading capacity over time, and a baseline recorder for your reference points. Every figure is typed by you, kept on your device, and sent nowhere.
🛡️Your hardware, your numbers, your call. Charge with intent — keep your cells healthy longer.
CycleRolt: Battery Care is built around a single promise: the numbers you log stay with you. Here is what that means — and why there is so little to explain.
Nothing. There are no accounts, names, email addresses, phone numbers, or location requests, and no analytics. The values you enter — charge percentages, device names you choose, capacity readings, and saved baselines — are written only to local storage and are never seen by us.
Because we collect nothing, there is nothing to use, profile, or sell. Every calculation — charge-time estimates, degradation tracking, baseline comparisons — happens entirely on-device, using only the figures you typed.
Your logs and reference points live in the app's local storage on your own device. There is no cloud sync, no remote backup, and no server that receives your entries.
CycleRolt contains no third-party analytics, no advertising networks, no trackers, and no embedded marketing SDKs. Nothing in the app phones home.
The strongest protection is that your data never leaves your device. Running fully offline keeps the attack surface minimal — there are no transmissions to intercept and no accounts to breach.
CycleRolt collects personal information from no one, including children under 13. With no accounts, no gathering, and no transmission of any kind, the app is COPPA-friendly by design.
You control everything you enter. Edit or clear your logs anytime in the app; removing the app from your device permanently deletes all associated data. With no accounts or backups on our side, nothing is left behind.
If this policy is ever updated, the revised version will carry a new effective date at the top. Since the core principle — collecting and transmitting nothing — is unlikely to change, updates will mostly be clarifications.
Questions about privacy? Write to privacy@cycleroltapp.com and we'll be glad to help.
📨Got a question, a bug to wave at us, or an idea that would make CycleRolt sharper? We're a small team and we read every message ourselves.
Whether you're stuck on a feature, curious about how the 20–80 method actually works, or want to talk collaboration — reach out. We genuinely like hearing how people keep their batteries alive.
⏱️ Typical reply time: 24–48 hours