This is the complete guide to the KetoCypher Android app: setting up your account, logging food, reading the Today screen, connecting Health Connect, backing up your data, and everything in Settings. It describes the app as it stands during the Android beta. Some screens and wording may shift slightly before general release; this page is kept current as the app changes.
Last updated: July 12, 2026.
KetoCypher uses email and password only, no social login. Your password is never sent to our servers in plain form; it stays on your device and is used to unlock your encryption key. Since there's no "forgot your data" reset on our end, we recommend storing your password in a password manager rather than trying to memorize it.
During setup you're shown a 12-word recovery phrase once. Write it down and keep it somewhere safe (not a screenshot, not a note app). It's the only way to recover your encrypted data if you forget your password or move to a new device without a backup file. KetoCypher can't re-display this phrase later, and we can't recover it for you. If you ever need a fresh one, you can generate a replacement from Settings → Recovery Phrase, which invalidates the old one.
Onboarding asks which way of eating you're following. This sets your starting carb, protein, and fat targets, all editable later:
KetoCypher asks for your sex, age, height, weight, and activity level, then estimates your Total Daily Energy Expenditure (TDEE, the calories you burn in an average day) using the Mifflin-St Jeor formula. You then pick a goal (lose, maintain, or gain weight), which scales that estimate into a daily calorie target. You can adjust your macro and calorie targets directly anytime in Settings → Nutrition Goals, or tap Recalculate Goals on that screen to re-run this calculator with updated body metrics, activity level, protocol, and goal.
Onboarding also offers to connect Google Health Connect and enable notifications. Both are optional and can be turned on or off later in Settings; skipping them does not block account creation or logging food.
Today is the app's home screen and the default landing spot after you log in. It's a stack of read-only snapshot cards. Nothing on Today logs food by itself; the only action point is the + button (see Logging Food). Tap any card to see its full detail screen.
If you haven't backed up recently, a banner appears at the top of Today with a shortcut to back up now.
Tap the + button on Today or Log to open Add Food. You'll see several ways to add an entry:
Whichever path you take, you'll land on a day, meal, and time picker before the entry saves. It defaults to today and whichever meal matches the current time, but you can log to any past date, any meal, and any time, which is useful for logging something you ate earlier or planning ahead.
You can mark an entry as planned instead of logged, useful for mapping out a meal you intend to eat later. Planned items show up ghosted in your Log and don't count toward your daily totals. When you're ready, tap Log it on the planned entry to convert it to a real, counted log at the time you actually ate it.
Open the Log tab to see everything for a given day, grouped by meal. Tap any entry to adjust its amount, time, or meal; swipe to delete. Nothing on Today can be edited directly, edits always happen through Log.
If you practice intermittent fasting, set your eating window in Settings → Eating Window (for example, 12:00 PM to 8:00 PM for a 16:8 schedule). Once set, the Today screen shows a live countdown: time left in your current fast, or time left in your eating window.
If you try to log food while an active fast is in progress, KetoCypher shows a break-fast warning first, so you don't break a fast by accident. You can still confirm and log it if that's what you meant to do.
Your daily carb, protein, and fat targets come from your chosen Nutritional Protocol (see Getting Started) or a custom set of grams you enter yourself. Edit them anytime in Settings → Nutrition Goals. Your calorie target is derived automatically from those macros; to re-derive it from your TDEE and goal instead, tap Recalculate Goals on that same screen.
Carb Mode controls which number is the headline metric on your macro card: Total Carbs (the default, and what we recommend) sums every gram of carbohydrate you eat, including fiber and sugar alcohols. Net Carbs subtracts fiber and sugar alcohols first. Both numbers are always calculated and visible; Carb Mode just decides which one is emphasized. The first time you switch to Net Carbs, KetoCypher shows a short disclaimer explaining that net-carb tracking can be abused with processed "keto" foods; after that one confirmation, switching back and forth is instant.
The Insights tab is for reviewing patterns, not daily logging. It shows trend charts for your macros, electrolytes, and any connected biometrics over the last 7, 30, or a custom range of days. A dismissible weekly summary also appears at the top of Today, recapping days logged, average macros, and your best and missed days, with a link into the full report. Everything here is computed on your device from your own data.
Health Connect is optional. When connected, KetoCypher reads weight, steps, heart rate, sleep, and blood glucose from Google Health Connect (and more data types as Health Connect adds support), so your food log can be paired against real biometrics without a separate login or wearable integration. If you don't have a compatible device or app writing to Health Connect, you can enter weight and other readings by hand at any time; both paths feed the same Today and Insights cards.
Manage the connection in Settings → Health Sync: turn each data type on or off individually, enable them all at once, or jump straight to Android's Health Connect app to review or fully revoke access. Syncing itself is automatic, KetoCypher refreshes in the background and whenever you open the app, so there is no manual sync button on this screen.
When you enable a data type, KetoCypher pulls in your recent history (about the last month, as far back as Health Connect makes available) so your Insights have something to work with right away, rather than starting empty from the moment you connect.
KetoCypher stores everything encrypted on your device. Backups are exported as a single .kcbak file, protected by a passphrase you choose (separate from your account password), which you can store anywhere: your device, Google Drive, Dropbox, an external drive.
Restoring a backup replaces all local data on the device, so KetoCypher always asks you to confirm first and shows the backup's date and entry count before you commit. If you get a new phone, reinstall the app, sign in, and you'll be offered the choice to restore from a backup or start fresh.
KetoCypher's free tier is the complete tracking app: unlimited logging, all macro and electrolyte tracking, Health Connect, Insights, and manual/local backups, for free, indefinitely. Premium Cloud Backup is an optional add-on for automatic, off-device backup:
Subscribe or manage your subscription from Settings → Backup & Restore, which hands off to Google Play for billing. Cancel anytime from Google Play; your local data and the ability to keep making manual backups are unaffected either way.
Configure app lock behavior in Settings → Security:
Because the app can require the device itself to be unlocked to access your encryption key, we recommend having a real lock screen (PIN, pattern, password, or biometric) set on your phone, not "swipe to unlock."
Settings is organized into a few groups, all reachable from the Settings tab:
Sign out clears your session but keeps your encrypted data on the device; sign back in anytime with your email and password.
Delete account or data is available from Settings → Account, or by emailing [email protected]. You can delete just your cloud backups while keeping your account, or permanently delete your account and all server-side data. For the full walkthrough, including what's removed, timing, and your data-export options first, see Delete Your Account or Export Your Data.
For anything else, general questions go to [email protected], account and security questions go to [email protected].
Use "Forgot password" on the login screen. You'll set a new password by email verification. If you also have your 12-word recovery phrase or a recent .kcbak backup, enter it when prompted so your existing data reopens under the new password. Without either one, you'll be able to sign back in, but your previously logged data on that device won't be readable again; start fresh or restore from a backup file if you have one.
As long as you're still signed in and unlocked on a device with your data, generate a new one immediately from Settings → Recovery Phrase and write it down somewhere durable this time. If you're locked out and have no phrase and no backup file, that data can't be recovered; this is by design, since KetoCypher never holds a copy of your key.
Syncing is automatic, so there is no manual sync button. KetoCypher refreshes in the background and each time you open the app. To force a fresh pull right now, open your health data from the Today screen's Health Connect card and pull down to refresh. If a reading still isn't coming through, check that its data type shows Connected in Settings → Health Sync (tap Enable if it doesn't), then use Manage in Health Connect on that screen to confirm KetoCypher still has permission in Android's Health Connect app. Data types your specific device or wearable doesn't support are skipped silently, that's expected, not an error.
Double-check you're entering the backup's own passphrase (set when that specific backup was created), not your account password, unless you chose to unlock with your recovery phrase instead. If the file was moved between apps or cloud services, re-download it fresh; partial transfers can corrupt the file.
Adjust the auto-lock timer in Settings → Security. Remember that locking your phone's screen always locks KetoCypher immediately, regardless of that timer, by design.
Use the in-app feedback option in Settings, or email [email protected]. During the beta, this is the fastest way to get a fix or answer.