ProxiOne vs WristBattery
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ProxiOne
This app transforms your phone into a key for your laptop, automatically locking it when you step away. It offers customizable security features like privacy screens and anti-theft alarms for public places, ensuring your device and data remain protected.
- Proximity auto-lock via Bluetooth
- Smart signal filtering
- Trusted Places with customizable profiles
- Privacy Screen to obscure display
- Café Mode anti-theft alarm
- Remote lock, sleep, and alarm control
- Activity log and status monitoring
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Walk away. Your laptop locks. ProxiOne turns your phone into a key for your laptop. Leave your desk and the laptop locks by itself. Come back and you are ready to work again. No buttons, no habits to learn. PROXIMITY AUTO-LOCK • Locks your laptop when your phone moves away, over Bluetooth. • Smart signal filter: a short drop does not lock you out. • Waits while you type, so it does not lock in the middle of your work. • Choose your own lock distance and see it live on the signal card. • Pair more than one phone. The laptop locks only when all of them are gone. TRUSTED PLACES • Save places like Home or Office. • Relaxed at home, Standard at work, Strict at the café: your laptop picks the profile by itself. • Strict locks as soon as you leave and turns on Privacy Screen. • Location is optional and stays on your laptop. Focus, Shortcuts or one tap on your phone work too. PRIVACY SCREEN • Covers your screen the moment you step away, before anyone can read it. • Any key asks for your password. Quick Unlock gets you back in fast. CAFÉ MODE ANTI-THEFT • Arm it before you leave your laptop in a public place. • A loud alarm sounds if someone unplugs the charger, closes the lid or wakes the screen. • Your phone gets an alert the same second. SECURITY ALARM AND REMOTE CONTROL • Sound a loud alarm on your laptop from your phone. • Lock, sleep or start the screen saver from your phone. • Check battery and lock status at a glance. • Activity Log shows every lock, unlock and alert with the time. ALSO INCLUDED • Work Mode keeps your laptop awake and tells you before it sleeps. • Home Screen widgets, Live Activity and a watch app. • Pair in seconds with a QR code. No account. PRIVACY FIRST Your phone and laptop talk directly over Bluetooth. There is no ProxiOne account and no ProxiOne server. Your places and activity stay on your devices. The app sends anonymous usage statistics and crash reports, and you can turn them off in About. PRICE Free to download. Every feature is free for 3 days after you pair. After that, a one-time Pro purchase keeps Proximity Auto-Lock, Trusted Places, Privacy Screen, Café Mode, Security Alarm, Remote Lock & Sleep, Screen Saver, Battery & Status and Activity Log on. No subscription. REQUIREMENTS Install ProxiOne on your phone and on your laptop. One Pro purchase works on both.
WristBattery
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Your Watch battery, in view. WristBattery brings your Apple Watch's last measured battery level, charging state and measurement age to iPhone. FREE EVERYDAY FEATURES • Battery level, charging state and measurement details • Basic low-battery reminders below 75%, 50% or 25% • Interactive charging history and estimated charge cycles • Separate names and histories for your saved watches • Home Screen and Lock Screen widgets and a Watch complication • Optional charging Live Activity • Optional private iCloud backup • Siri and Shortcuts for saved battery readings • Setup guides, FAQs and an on-demand system check The overview combines battery, measurement age and daily history, with a night assessment for Premium. The monthly chart shows observed daily ranges; the charging archive offers date navigation. Four sections: Overview, History, Planning and Alerts. Charging Live Activities are free and off by default. Start one manually in the app, or enable a separate optional automatic start while the app is active and a fresh charging reading arrives. After ending one, another automatic start needs a fresh reading showing the Watch off its charger. The activity shows received readings and their age; it does not increase measurement frequency. Starting while the app is closed is not guaranteed. PREMIUM: PLAN YOUR NEXT CHARGE How long might the battery last? Premium adds local runtime estimates, a daytime reserve and a separate optional night plan. The central estimate, range and data basis are explained. The model considers earlier observed errors from suitable discharge periods. More data does not guarantee a narrower or more accurate forecast. Daytime reserve and desired morning battery are separate settings. Night planning accounts for usage before the night starts and during the night. A night profile needs three sufficiently observed nights; otherwise the general data basis is identified. An evening hint is a separate opt-in and is not triggered by uncertainty alone. No sleep tracking or import of Apple's sleep schedule. Personal rules can remind you about low battery, charging start or a charging target. Choose watches, weekdays, time windows, quiet hours and limited repeats. Basic and personal reminders work independently. A charging target does not stop charging. Purchase and trial: Settings > Premium > One-time purchase. Eligible users can try Premium free for seven days, once per Apple Account. No renewal or automatic charge. Permanent Premium is a separate one-time Apple in-app purchase at the Store price, with no subscription. Existing permanent purchases remain valid. Basic features stay free after the trial; Premium settings are retained. Invitations are limited and can be permanently dismissed. MEASUREMENTS AND SYSTEM LIMITS The Watch supplies its own battery readings. The public watchOS value may be rounded and differ from Apple's display. Apple controls background execution, transfers, widgets and notifications. No fixed interval or guaranteed real-time updates. Refresh requests a reading but cannot force the Watch to wake. Forecasts require Premium or an active trial and sufficient recent data. Fresh local observations are recorded even before purchase. Forecasts are estimates, not new measurements. Forecast reminders are optional and separate from measured-threshold alerts. Estimated cycles are not Apple's official cycle count or a battery-health measure. LOCAL AND PRIVATE No WristBattery account, developer server, advertising or tracking SDK. Forecast data and settings stay local and are excluded from the app's private iCloud backup. Device-backup exclusion is requested, not guaranteed. Restored history does not train forecasts. No external AI processes battery history. Diagnostic reports are previewed and shared only at your request. Requires iOS 17 and watchOS 10 or later. Siri availability depends on device, system and language.
Screenshots
Verdict
The clearest difference is device support: ProxiOne at 5 against WristBattery's 2. ProxiOne also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. ProxiOne sells 1 one-off in-app purchase and WristBattery sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
ProxiOne ships an update every 2 weeks, WristBattery every 6 days. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.
| Parameter | ProxiOne | WristBattery |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 weeks | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone, Apple Watch |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 19 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | 12BAY TECHNOLOGY COMPANY LIMITED | Christopher Stoll |
In-app purchases
ProxiOne
- Pro Lifetime Access$6.99
WristBattery
- 7-day TrialFree
- Personalization$3.99









