Holdings
An allocation donut with per-asset weights, and a position table you can sort by value, by P&L, or alphabetically, with cost basis and unrealized gains per asset.
Your portfolio,
reconciled to the cent.
One read-only ledger for your Interactive Brokers account and your crypto wallets, with fees, FX and gas included. Then AI explains what moved, citing your own numbers.
30% off your first 3 months when billing opens, for everyone who joins before launch. No card now, and BasisTrail can never trade.
100% read-only
IBKR + Base in one view
Every number traced to source
Your keys stay yours
How it works
Three steps, about five minutes.
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1
Connect, read-only
Paste a public wallet address, or an IBKR Flex token you generate yourself. No password, no trading permission, nothing to sign.
-
2
BasisTrail reconciles it
Trades, dividends, withholding, FX and gas are normalized into one USD ledger, and anything ambiguous gets flagged instead of smoothed over.
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3
Read what actually moved
See cost basis, real P&L and your spread against the S&P 500. Each morning, a brief explains the change and points at the numbers behind it.
AI that reads your book
Ask anything. Get an answer with the receipts.
A daily brief in your chosen tone, plus a chat that actually knows your positions. Every answer points to the exact part of your portfolio it used. No vague tips, no made-up numbers. Your broker tokens and wallet keys are never shared with the AI.
- Answers you can trace back to your own data
- Choose its voice: friendly, balanced, or deeply quantitative
- Private by design: credentials stay on-device; de-identified portfolio facts reach cloud AI only after you enable it
One ledger
Broker truth and on-chain activity, finally in one place.
Every IBKR trade, dividend, fee and FX conversion sits next to every Base transfer and gas cost, normalized to USD, with the gaps shown instead of smoothed over.
- Net invested, realized & unrealized P&L
- Cash, fees and gas broken out
- Allocation, drift and sync quality
Benchmark
Know if you're actually beating the market.
Compare your real performance against the S&P 500 or Nasdaq-100, side by side. Returns are contribution-adjusted, so adding money never masquerades as growth. You see the spread that's genuinely yours.
- Portfolio vs S&P 500 or Nasdaq-100
- Deposit-adjusted returns, not inflated ones
- Daily, weekly, and monthly windows
Transaction ledger
Date-grouped and colour-coded, with filters by source, type, direction and asset. Dividends, fees and withholding are typed, and anything ambiguous is flagged for review.
Daily brief
Each morning, a short read on what moved and why, in the tone you picked. It flags idle cash, FX drag and review items, and every figure comes from your own ledger.
Who builds this
One person, building in the open.
BasisTrail is built and run by a single developer, not a venture-funded team with a growth department. That is the whole reason it stays read-only: there is no plan to hold your funds, route your orders, or sell your data, because none of that is the business. You pay once a year, the app tracks your money, that is the arrangement.
I reached the finals of IMC Prosperity 4, IMC Trading's global algorithmic trading competition, which is where the standard for this app comes from. In that competition a rounding error in your accounting is a losing position, so BasisTrail treats fees, FX and gas as first-class numbers rather than details to hide in a total.
- Read-only, structurally. An IBKR Flex token and public addresses cannot place a trade even if the app wanted to.
- Your credentials never reach the AI. They are stripped before any model sees your data.
- No invented numbers. Every figure traces back to a transaction you can open.
Pricing
$59 a year. $89 with the AI.
No trial games, no seat pricing, no upsell ladder. Billing is not open yet, because BasisTrail is still in App Store review, and everyone on the waitlist gets 30% off their first 3 months when it does. These are the launch prices, published now so nobody is surprised later.
Yearly keeps the same product access and lowers the effective monthly price on every paid plan.
Demo Access
$0
A narrow preview before you commit.
- 1 connected source only
- 7 days of recent history
- Dashboard, holdings, and the transaction ledger
- No AI on Demo
- No export, alerts, or advanced lot methods
Core
$59 /yr
Full tracking, exports, and advanced lot methods without the AI layer.
- Unlimited IBKR accounts & crypto wallets
- Full history and every synced source
- No AI brief or chat mode
- No transaction explain or data audit
- CSV & PDF export · FIFO / LIFO / HIFO
Pro AI
$89 /yr
The full BasisTrail experience with chat, audits, and a larger AI budget.
- Everything in Core, unlimited
- 1,500 AI credits / month
- Daily brief, chat, explain & data audit
- Priority support
- Cancel anytime, and your account drops back to Demo access
Purchases are closed until BasisTrail clears App Store review. Join the waitlist now and your 30% launch discount is recorded against your account. No card is stored, and nothing charges automatically. You can use the free Demo tier in the meantime.
FAQ
Straight answers.
Questions about using BasisTrail as a read-only Interactive Brokers portfolio tracker, crypto wallet tracker, cost basis tracker, or iPhone investment tracker? Start here.
Do you ever see my IBKR password or wallet keys?
No. BasisTrail uses an IBKR Flex Web Service token (read-only, you generate it) and public crypto wallet addresses. It cannot trade, move funds, or sign anything.
Is BasisTrail an Interactive Brokers portfolio tracker for iPhone?
Yes. BasisTrail is a native iPhone portfolio tracker built for Interactive Brokers users who want a read-only view of holdings, transactions, cash, fees, FX, and performance without giving an app trading authority.
Can BasisTrail track crypto wallet transfers, token balances, and gas fees?
Yes. BasisTrail is designed to bring crypto wallet activity into the same ledger as brokerage data, including balances, transfers, and gas costs, so users can inspect brokerage and on-chain activity in one place.
Does BasisTrail track cost basis and realized or unrealized gains?
Yes. BasisTrail is built to help users inspect cost basis, realized gains, unrealized gains, fees, cash, and FX across Interactive Brokers and crypto wallet activity. It supports advanced lot methods on paid plans once billing opens.
Why use BasisTrail instead of a spreadsheet or generic portfolio tracker?
BasisTrail is read-only, traces numbers back to source, and explains what changed with source-cited AI. It is built for investors who want audit-grade portfolio visibility instead of manually stitching together spreadsheets or relying on generic dashboards.
Who is BasisTrail best for?
BasisTrail is best for investors who want a read-only portfolio tracker for Interactive Brokers and crypto wallets, especially when they care about accurate holdings, transactions, fees, FX, cost basis, and explainable changes across both brokerage and on-chain accounts.
Where do I manage my plan?
Billing will be managed on the web, in your account here, once purchases open. Sign in with Apple in the app and your plan will link automatically with no extra steps.
What's different between the plans?
Demo access is deliberately narrow: one source, seven days of history, and no AI. Core unlocks unlimited tracking, exports, and advanced lot methods without the AI layer. Pro AI adds the full AI toolkit, including daily briefs, chat, transaction explanations, and data-quality audits. Monthly and Yearly only change billing cadence, and both are still marked coming soon until the App Store launch is approved.
What are AI credits?
AI credits apply to paid plans only. They cover the daily brief, chat, transaction explanations, and data-quality audits. Heavier requests use more, lighter requests use less, and BasisTrail calculates that budget from real model usage so it stays fair and sustainable. Your balance resets every month.
Is the AI giving financial advice?
No. It explains your own data and flags issues, citing the exact sources. It never tells you to buy or sell, and your credentials are stripped before anything reaches the model.
Can I cancel?
Once billing opens, you’ll be able to cancel anytime from the billing portal and keep your data accessible on the Demo tier.
Stop trusting a spreadsheet you forgot to update.
Join the waitlist for 30% off your first 3 months, connect one read-only source, and see your real numbers in about five minutes.