Lab

The LabWhat we build, and the rule we build to The DoctrineFour commitments, stated as constraints Engineering StandardHow the work is held to account MethodologyEvery formula and test case, published NotesShort, sourced, and checked against the maths What We ShipEverything currently in the world Contactsupport@thebrinklabs.com

Instruments

I · Plan

Zero-Based BudgetGive every unit of income a job before you spend it. 50/30/20 BudgetNeeds, wants and savings — against what you really spend. True Hourly WageWhat an hour of your life actually pays, after the job takes its cut.

II · Protect

Subscription AuditWhat renting your life costs per use, per year, per decade. Emergency FundSavings divided by the month you cannot avoid. Savings GoalOne monthly figure for every known future cost.

III · Borrow

Loan & EMIThe monthly payment, the interest and every month of the schedule. Debt PayoffAvalanche or snowball, priced to the month and the cent.

IV · Grow

Rule of 72How long until money, debt or prices double. Net WorthEverything you own against everything you owe — and where it is heading. All 10 instrumentsThe index, by chapter

MyneWallet

OverviewThe app, and what it refuses to do How It WorksEnvelopes, capture, analysis What It CostsFree tier and the one-time unlock QuestionsFourteen answers, no marketing Privacy PolicyFourteen sections, plainly written Get it on Google PlayAndroid · the only official listing

Notes

All NotesShort, sourced, and checked against the maths
The Brink Labs
MyneWallet
Live on Google Play · Android

Your Money.
Your Device.
Nobody Else’s Business.

An expense tracker and zero-based budget planner that never asks for a bank login, keeps your ledger on your phone, and works fully in airplane mode. It goes online only when you back up — encrypted — to your own Drive, or buy PRO.

0 trackers 0 ads No sign-up Encrypted backups
QR code that opens MyneWallet on Google Play

Scan with your
Android phone.

Free to use. One-time unlock for the full engine. No subscription, ever.

This monthSafe to spend
$412.80
Assigned$3,200 of $3,200
Obligations, next 30 days$1,148
Where this livesYour device only

The Short Version

Fourteen Facts, No Marketing.

What it is
MyneWallet is a private, offline expense tracker and zero-based budget planner for Android. It is published on Google Play by The Brink Labs.
What it costs
Free to download and free permanently for the core engine. PRO is a single one-time unlock — not a subscription, and it never renews.
Free tier limits
3 accounts · 7 envelopes · 10 expense and 4 income categories · 4 obligations · browse any of your last 3 months, one month at a time · unlimited tags. Nothing you enter is ever deleted.
What PRO removes
Every cap removed, every month combined into one view, twelve months of history, Burn-Down, Cash Flows, Payee Intelligence, Net Worth Trend, the 30-Day Outlook, payoff plans, price-change alerts, PDF statements, and the Quantum, Aurum Noir and Carbon Slate themes.
Where the data lives
In MyneWallet’s private storage on your phone, which Android isolates from every other app and protects with the phone’s own encryption. MyneWallet does not encrypt this working copy itself — its backups are encrypted. The Brink Labs runs no server that holds your financial data.
Bank connection
None. MyneWallet never requests bank credentials and uses no aggregation service. You enter transactions yourself.
Account required
None. There is no sign-up, no email and no password. The app opens ready to use.
Trackers
MyneWallet ships no advertising SDK, no attribution SDK and no analytics SDK. Firebase is not integrated.
Offline capability
Works fully offline. Every budgeting, tracking and analysis feature works in airplane mode.
When it uses the network
Only when you choose: backing up to or restoring from your own Google Drive, and Google Play showing the PRO price or completing a purchase.
Backup encryption
Encrypted on your phone with AES-256-GCM, keyed from your passphrase (PBKDF2-HMAC-SHA256, 600,000 iterations), to your own Google Drive or a file you keep.
Budgeting method
Zero-based budgeting: every unit of income is assigned a job before it is spent, until the To Assign counter reads zero.
Sync across devices
None, deliberately. The only copy outside your phone is an encrypted backup you choose to make.
How the business earns
From one-time PRO unlocks, and nothing else. No advertising inventory, no data brokerage, no recurring revenue.

The Three Ransoms

Most Money Apps Want Three Things
Before They Will Help You.

A bank login. A monthly payment. And permission to study what you buy. MyneWallet asks for none of them.

RANSOM 01

The Credentials

Bank aggregation hands a third party a live, categorised feed of everything you buy, everywhere, forever — the most commercially valuable document about you in existence, sitting on a server you have never seen.

RANSOM 02

The Rent

A tool you open daily makes a superb subscription. Miss one payment and the app you fed for three years locks you out of your own history. That is not owning software. That is renting your own numbers.

RANSOM 03

The Attention

Ad interstitials, upsell modals, sync spinners. Every second between I spent money and it is logged is a second you will eventually stop spending. An untracked week is what actually breaks a budget.

Buy It Once. Log In Seconds. Keep Everything.

How It Works

Three Jobs.
Done Properly.

Most finance apps do many things adequately. This one does three things and holds itself to a standard on each.

01 — ALLOCATE

Every Cent Has A Job

Every dollar that lands gets a destination. Rent, groceries, the trip in March, the card you are digging out of. When To Assign reaches zero, every envelope on screen is a promise already funded.

  • Auto Assign — fills the plan from a preset, then you argue with it.
  • Safe to Spend — separates liquid cash from money already committed.
  • Need, Want or Extra on every envelope, so the trade-off is visible.
  • Credit cards modelled as liabilities, so debt never inflates a cash position.
To assignLive
$0.00
Take-home$3,200
Envelopes funded11 of 11
Savings rate18.4%
CaptureSeconds to log
2 taps
Network callsZero
Works in airplane modeEntirely
Accounts requiredNone
02 — CAPTURE

Logged Before You Put The Phone Down

A tracker only works if you open it. This one is engineered around one number: the seconds between spending and logging. Two taps for the common case, the full form when you want it, no network round-trip either way.

  • Quick Add for the case that happens forty times a month.
  • Unlimited tags layered over a capped category set.
  • Multi-currency accounts at a rate you set yourself.
  • CSV import that adopts your existing categories by materiality.
03 — ANALYSE

An Analysis Engine, Not A Pie Chart

Net Worth and Obligations in one place: what you own, what you owe, what is scheduled to leave, and, with PRO, where the balance lands in thirty days — computed from real obligations, never a hand-waved average.

  • Spending heatmap with rhythm detection — the weekday that quietly costs the most.
  • Cash Flow Sankey (PRO) showing where income actually goes.
  • Payee Intelligence (PRO) — who you pay, how often, and how that is trending.
  • 30-Day Outlook (PRO) built from dated obligations, not a moving average.
Spending rhythmTen weeks
Heaviest weekdaySaturday
ComputedOn device

The Vault

A Breach Of Our Servers
Cannot Expose You.

We do not have any. Your ledger lives in MyneWallet’s private storage on your phone, protected by Android’s own encryption, and The Brink Labs operates no server that receives it. That is the difference between a privacy policy and a privacy architecture: one is a promise about what a company will choose to do, the other is a statement about what is possible.

Where your data isAll of it
On your device100%
On our servers0%
Shared with third parties0%
BackupsEncrypted, your Drive
App LockFree, never gated

Transparent Pricing

Say Goodbye To Endless Monthly Subscriptions.

The core engine is free, permanently. If you want the deep analytics and unlimited structure, you buy it once — and it is yours for good.

Free Forever

The Whole Engine

Not a trial and not a crippled demo. A complete, private, offline money manager that never expires and never shows you an advertisement.

3 accounts 7 envelopes 10+4 categories 4 obligations 3 mo history 1 mo per view ∞ tags
  • Zero-based budgeting with envelopes and Auto Assign
  • Accounts, categories, tags and obligations
  • Category, Nature, Tag and Heatmap analytics, one month at a time
  • App Lock, Block Screenshots, balance masking
  • Encrypted Google Drive backup and restore
Lifetime Unlock

Pay Once. Own It Forever.

Every limit removed, and new PRO capabilities included as they ship. Tied to your Google account, so it survives reinstalls and new phones.

∞ accounts ∞ envelopes ∞ categories ∞ obligations 12 mo history 12 mo analytics
  • Unlimited accounts, envelopes, categories and obligations
  • Every month combined into one view, with twelve months of history
  • Burn-down pacing, cash-flow mapping, payee intelligence
  • Net Worth Trend, 30-Day Outlook, payoff plans and price-change alerts
  • Quantum, Aurum Noir and Carbon Slate themes
  • PDF statements, and new capabilities as the app grows

Try The Method First

Ten Instruments,
No Install Required.

The same architecture, running in your browser. Allocate a budget, price your subscriptions, find your runway or measure your net worth — without downloading anything or telling us who you are.

Open the instruments
The instruments10 live
I · PlanZero-Based Budget, 50/30/20 Budget, True Hourly Wage
II · ProtectSubscription Audit, Emergency Fund, Savings Goal
III · BorrowLoan & EMI, Debt Payoff
IV · GrowRule of 72, Net Worth

Straight Answers

The Questions Worth Asking.

Is MyneWallet free?

Yes. MyneWallet is free to download and the core budgeting and tracking engine is free permanently — no advertisements, no trial expiry. PRO is an optional one-time purchase that removes every limit. It is not a subscription and it never renews.

Does MyneWallet work offline?

Yes — fully. There is no account and no sign-in, and every budgeting, tracking and analysis feature works in airplane mode. MyneWallet goes online only when you back up to or restore from your own Google Drive, and when Google Play shows the PRO price or completes a purchase.

Does MyneWallet connect to my bank?

No. MyneWallet never asks for bank credentials and uses no aggregation service. That is deliberate twice over: continuous read access to your accounts is the single largest privacy concession in personal finance software, and the two seconds spent logging a purchase are the moment you actually notice it. The app is engineered to make those two seconds as fast as physically possible, not to remove them.

Where is my financial data stored?

In MyneWallet’s private storage on your phone, which Android isolates from every other app and protects with the phone’s own encryption. MyneWallet does not encrypt this working copy itself — its backups are encrypted. The Brink Labs runs no server that holds your financial data. No copy of your ledger exists outside your phone unless you choose to back it up — encrypted — to your own Google Drive or a file you keep.

What happens if I lose my phone?

You restore from a backup you control. MyneWallet encrypts each backup on your phone with AES-256-GCM before it leaves, keyed from your passphrase (PBKDF2-HMAC-SHA256, 600,000 iterations), and stores it in a hidden app folder in your own Google Drive or as a file you save. On a new phone, install MyneWallet, sign in to the same Google account and enter your passphrase. You can also export a plain CSV at any time.

Is MyneWallet a subscription?

No. PRO is a single one-time unlock tied to your Google account. It never expires, it survives a reinstall and a new phone, and new PRO capabilities added in future updates are included rather than sold again.

What is zero-based budgeting?

Zero-based budgeting means assigning every unit of income a specific job before it is spent, until the amount left to assign reaches zero. Instead of reviewing what you spent after the fact, you decide in advance what each dollar is for. MyneWallet implements it with envelopes, an Auto Assign tool, and a live To Assign counter that reads zero when the plan is complete.

Can I import my history from another budgeting app?

Yes. MyneWallet imports CSV files and adopts the categories it finds automatically, ranked by how material each one actually is, so your history arrives intact rather than collapsing into an uncategorised bucket. Export is equally complete — CSV for your raw data, and with PRO, a formatted PDF statement.

Does MyneWallet show advertisements or track me?

No. There is no advertising network, no attribution SDK and no product-analytics SDK in the app, and Google’s Firebase suite is not integrated. Do not take our word for it: put the app behind a network monitor, or simply use it in airplane mode: everything except backup and purchases keeps working.

Which platforms does MyneWallet support?

Android, through Google Play. There is no web version and no cross-device sync — a direct and deliberate consequence of storing your ledger only on your own device.

How does MyneWallet make money if it does not sell my data?

From one-time PRO unlocks, and from nothing else. There is no advertising inventory, no data brokerage, no affiliate placement and no recurring revenue to protect, which is precisely why the app can afford to work entirely offline. A business model that depends on your attention or your ledger produces different software, and the difference is visible in every screen.

Do I need an account to use MyneWallet?

No. There is no sign-up, no email address and no password. You open the app and start budgeting. An account exists to identify you to a server, and there is no server here to be identified to — the only optional Google sign-in is for backing up an already-encrypted file to your own Google Drive.

What are the limits of the free version of MyneWallet?

The free tier allows 3 active accounts, 7 active envelopes, 10 active expense and 4 active income categories, and 4 active obligations, and lets you browse any of your last 3 months, one month at a time, in the ledger and in the Category, Nature, Tag and Heatmap analytics. Tags are unlimited, nothing you enter is ever deleted, nothing is time-limited, and there are no advertisements. The one-time PRO unlock removes every cap, combines months into one view and extends history to 12 months.

Is there an iPhone version of MyneWallet?

Not currently. MyneWallet is an Android application distributed through Google Play, and there is no iOS release, no web application and no desktop client at this time.

Transparency

Transparency & API Data Usage

Published in full so a reviewer, a researcher or an answer engine can find it without hunting. The complete legal text lives in the Privacy Policy.

OAuth scope, in full
Purpose of the app An offline-first personal finance engine: track expenses, run zero-based budgets, monitor net worth and obligations, all on the device.
Scope requested Google Drive, app-data scope only (drive.appdata), via OAuth.
Used for Backing up and restoring your own encrypted ledger to your own Drive. Nothing else.
Never used for Reading, aggregating, profiling or transmitting your data to any third-party server.
Servers holding your data None. The Brink Labs operates no such server.

MyneWallet’s use and transfer of information received from Google APIs to any other app will adhere to the Google API Services User Data Policy, including the Limited Use requirements.

Stop Renting.
Start Owning.

Free to use, permanently. One purchase if you want the whole engine. Nothing leaves your phone unless you back it up — encrypted — to your own Drive.

QR code that opens MyneWallet on Google Play

Scan with your
Android phone.