The command centre for every battery you own — from your iPhone to your LiPo drone pack. Track, protect, and extend their lives. All in one place.
iOS 17+ · Best on iOS 18+ · iPhone, iPad, Apple Watch & Mac · Free during beta
The moment that costs you everything
You didn't forget to charge. You just didn't know. No warning. No system. No way to see the whole picture until it was too late.
This happens to photographers mid-shoot. To drone pilots mid-flight. To tradespeople on site. To parents. To anyone who depends on a battery to do something that matters.
The problem no one has solved
You probably have more batteries than you realise. Phones, laptops, drones, cameras, headphones, power banks, smart sensors, lights, RC packs, vaporisers, watches. Dozens of cells, all slowly dying — and most of them never tell you.
No single app has ever tracked them all. Until now.
Batteries losing capacity silently — you find out when they fail at the worst possible moment.
Swollen lithium packs are a fire and safety hazard. They need regular visual inspection — and most never get it.
Fly with too many watt-hours in your carry-on and you're stopped at security. Most travellers have no idea what they're carrying.
Batteries that haven't been charged in weeks or months, quietly degrading — rotting from inaction.
One place. Every battery. Total control.
VoltVault is the battery command centre for everything you own — Apple devices and physical batteries, tracked together, in real time, across all your screens.
Every iPhone, iPad, Mac, Apple Watch, and AirPods in your household. Every LiPo drone pack, camera battery, power bank, Bluetooth device, e-reader, portable speaker, and smart sensor you own. All of it, in one place, always up to date.
VoltVault knows when something needs attention before it fails. It learns how fast each battery drains. It predicts when you'll hit 20%. It alerts you when a LiPo is overdue for a visual check. It keeps your team's gear safe and ready.
And it does it without draining your own battery to do it.
Life with VoltVault
The assurance that every battery in your life is either healthy, charging, or flagged for attention. You stop guessing. You stop discovering dead batteries at the worst moment.
VoltVault extends the useful lifetime of every battery you own — reminding you when to charge, when to store at 50%, and when it's time for a maintenance cycle. Fewer replacements. Less waste. More performance.
Regular inspection reminders for LiPo and Li-ion packs. Watt-hour totals calculated automatically so you know exactly what you can fly with. No surprises at security. No fire risk from a swollen cell you didn't notice.
Whether it's your own kit or a team's gear — photographers, tradespeople, RC pilots, production crews — VoltVault tracks the entire fleet. Shared visibility, shared accountability, zero friction.
What's inside
Real-time battery levels across all your Apple devices — iPhone, iPad, Mac, Watch — via iCloud. See everyone's devices at once.
VoltVault learns how fast each battery drains from real usage history. Predicts when you'll hit 20% — for every battery in your fleet.
Dormancy warnings. Storage charge reminders. Visual inspection nudges. Overcharge protection. Alerts that actually matter, when they matter.
Critical battery levels surface on your Lock Screen and Dynamic Island — no need to open the app. Your fleet is always one glance away.
Tap any NFC-enabled battery label with your iPhone to instantly start a charge session. Zero friction logging.
Know exactly how many watt-hours are in your bag. Stay within airline limits without counting on your fingers at the gate.
The part no one else thought of
Nobody likes doing maintenance. So we turned it into something you actually want to do. Streaks, achievements, a living fleet score — VoltVault makes taking care of your gear genuinely satisfying.
Be first.
Get early access. Shape the app. Keep everything you own thriving.
App Store release coming soon. TestFlight spots are limited.
Effective date: 22 March 2026 · Last updated: 22 March 2026
VoltVault is developed and operated by Stirling Campbell, trading as TFP ("we", "us", "our"). This Privacy Policy describes how VoltVault collects, uses, and protects your information when you use our iOS, watchOS, and macOS application.
VoltVault collects only the information necessary to provide its battery tracking functionality:
All data collected by VoltVault is used solely to provide the app's features:
We do not sell, rent, or share your data with any third party for advertising or commercial purposes.
Your battery and device data is stored in two places:
We do not operate any external server that stores your personal data. All sync is handled directly between your devices and Apple's infrastructure.
VoltVault uses the following Apple frameworks that may involve data processing by Apple:
Each of these is governed by Apple's Privacy Policy.
VoltVault optionally scans for Bluetooth accessories that advertise the standard GATT Battery Service (UUID 0x180F). This scan is paused when the app is in the background and does not transmit data to any server. Detected accessory names and battery levels are stored only on your device.
VoltVault sends local notifications for low battery alerts, dormancy reminders, and charge recommendations. Notification permission is requested at first launch. You can disable notifications at any time in your device Settings.
VoltVault is not directed at children under the age of 13. We do not knowingly collect personal information from children.
Because your data is stored in your personal iCloud account and on your own device, you retain full control at all times. You may delete all app data by deleting the VoltVault app and clearing the associated iCloud data from Settings > [Your Name] > iCloud > Manage Account Storage.
We may update this Privacy Policy from time to time. When we do, we will update the effective date at the top of this page. Continued use of VoltVault after any changes constitutes your acceptance of the updated policy.
Questions about this Privacy Policy? Contact us at [email protected].