For iPhone and iPad

Which regime is the market in?
Ask a model, not a feeling.

Market Brief AI downloads a crypto pair's history from Binance, fits a hidden Markov model to it on your device, and colours every bar with the probability of a bull or a bear regime. It then replays the strategy those probabilities imply and draws it next to simply holding, so you can see, before risking anything, whether the model would have earned its keep.

Download on theApp Store

Features

Free to use. Nothing here is financial advice. · iOS 26 · iPadOS 26

Market Brief AI on iPhone: the AI strategy's equity curve above the buy-and-hold line, and the price chart with regime markers.

Hidden Markov models fitted on the device
Bull and bear probabilities on every bar
Backtest against buy-and-hold in one tap
Context agents: CPI, the Fed, S&P 500, quakes, seasons
On-device sentiment scoring, no cloud AI

What it does

A research desk that fits in a pocket.

The app is one long screen: data, model, agents, backtest, charts. Everything computes locally. The only thing that leaves the phone is a request for public price data.

Four regime models, from Hera to Athena

A hidden Markov model assumes the market moves between hidden states — calm uptrend, chop, decline — and works out from the returns which state it is most likely in now. Market Brief AI ships four of them: Hera, the classic three-state model; Metis, which also reads external inputs; Hestia, which models how long a regime tends to last; and Athena, which tracks several regime layers at once. You choose one, set the window, confidence and iteration budget, or let auto-tune pick.

Hera: standard three-state HMM (free)
Metis and Hestia: input-aware and duration-aware models (Plus)
Athena: factorial model for layered regimes (Pro)
Window, confidence and iterations under your control

Backtest against just holding

Pick a starting capital and a date. The app replays the model's BUY, SELL and WAIT decisions bar by bar with closed-bar semantics — the same rules a live decision would follow — and draws the resulting equity curve in purple over the buy-and-hold line in blue. The dashboard puts the two final figures side by side, with the difference in green or red.

Replay with the same closed-bar rules as live decisions
Strategy equity versus buy-and-hold on one chart
Capital from $100 to $1B, any start date in the history
Trade markers on the price chart, with reasons in the log

Agents that add context to the price

Prices alone miss what moves them. The agents are named data workers, each pulling one public source: Kronos reads US inflation from the Bureau of Labor Statistics, Zeus brings the S&P 500 in as market context, Demeter follows the tone of the Federal Reserve, Poseidon watches earthquakes, Aiolos tornado reports, and Tyche, Hermes and Helios add calendar effects. Toggle each one and sync them together.

Kronos: CPI releases, headline and core
Zeus and Demeter: S&P 500 context and Fed tone (Pro)
Poseidon and Aiolos: USGS earthquakes and NOAA tornado reports
Tyche, Hermes, Helios: seasonal and calendar overlays

Signals and guards on top of the regime

The regime says where the market probably is; the signal layer decides what to do about it. Fractal pivots, seasonality, SuperTrend, flag patterns and five auction-market signals can each be switched on, and a strategy blend slider mixes pivots with seasonality. Risk guards sit on top: a flash-crash detector, an EMA crash guard, a CUSUM drift guard and a hard stop.

Fractal pivots, seasonality, SuperTrend, flags
Auction signals: balance and imbalance breakouts, POC reversion, LVN rejection
Flash crash, crash guard, drift guard, hard stop
Strategy blend between pivots and seasonality

Sentiment scored on the device

Headlines about the asset are pulled from the public GDELT news index and scored by FinBERT, a finance-tuned language model that runs on the phone through Core ML. No text is sent to a cloud model. The score feeds the regime models as one more input, and you can open the analyser and score any sentence yourself.

FinBERT through Core ML, entirely on the device
GDELT news index as the public source
Your own sentences, scored on demand

Forecast history and the execution log

Each run leaves a forecast card: the regime call, its confidence, the price at the time and a one-line reading. Plus keeps the last ten per asset. Pro opens the full trade execution log, every buy and sell with the rule that fired it, so a good backtest can be read rather than admired.

Forecast cards with regime, confidence and price (Plus)
Full trade execution log with reasons (Pro)
Everything stored locally, readable offline

Who it is for

For people who want to test an idea before they trust it.

Systematic traders: You already think in regimes and rules. Here the model, the signals, the guards and the backtest are on one screen, and the phone does the fitting.
Quant-curious investors: You have heard of hidden Markov models and want to see one work on real prices without writing the code.
Students of markets: Change one parameter, run again, watch the curve move. It is a laboratory, and it never asks for your money.
Not for: Anyone looking for a signal service. The app simulates strategies; it does not tell you what to buy, and it says so on its first screen.

What it costs

Free to research. Plus and Pro for more model.

The free app fits Hera, backtests, charts, and runs the free agents. Plus adds the Metis and Hestia models and the forecast history. Pro adds Athena, the Zeus and Demeter agents, the advanced Kronos modes, every signal and guard, and the full execution log.

Free

$0 no account

Hera regime model
Any Binance USDT pair
Backtest against buy-and-hold
Kronos, Poseidon, Aiolos, Tyche, Hermes, Helios
Seasonality signal
Price and performance charts

No ads, no time limit.

Plus

$7.99 per month

$79.99 a year, two months free

Metis and Hestia models
Forecast history, ten per asset
Multi-regime volatility analysis
Extended historical backfill
Everything in Free

The first week is free. Cancel anytime in your Apple account.

Pro

$12.99 per month

$129.99 a year, two months free

Athena factorial model
Agents Zeus and Demeter
Kronos surprise mode and smart exit
SuperTrend, flags, auction signals, fractal pivots
Flash crash, crash guard, drift guard, hard stop
Strategy blend
Full trade execution log
Everything in Plus

The first three days are free. Cancel anytime in your Apple account.

Nothing in the free app is time-limited or watermarked. The tiers add models, agents and signals; the data, the charts and the backtest are the same for everyone.

Pricing →

Questions

Asked often enough to write down.

Is this financial advice?

No. The app is a strategy simulation and testing tool. Its results do not predict or guarantee real profits, trading carries significant risk, and nothing it shows is a recommendation to buy or sell anything. The disclaimer is the first card on the screen for a reason.

Does it trade for me?

No. There is no brokerage connection in the shipping app. It downloads public prices, fits models, and simulates what a strategy would have done. Whatever you do with that is done elsewhere, by you.

Which markets?

Crypto spot pairs quoted in USDT on Binance — any of them, sorted by volume when you add one. Daily history goes back to 2017; hourly and five-minute bars are kept for recent months.

What is a hidden Markov model?

A statistical model that assumes what you see — returns — is produced by a state you cannot see — the regime — and that the regime switches with some probability each step. Fitting one to a price series gives, for every bar, how likely each regime was. That likelihood is what the charts colour and the strategy trades on.

Does anything leave my phone?

Requests for public data: Binance prices, GDELT headlines, BLS inflation figures, USGS earthquakes, NOAA reports, Fed feeds. No account, no analytics SDK, no ad network, no cloud AI. The models and the sentiment scorer run on the device.

Does it work offline?

Once an asset is synced, yes: the history, the trained models, the charts, the backtest and the forecast cards are stored locally. Syncing new data needs a connection.

What do Plus and Pro change?

Which models, agents and signals are available. Plus opens the Metis and Hestia models and the forecast history. Pro opens Athena, the Zeus and Demeter agents, the advanced Kronos modes, all signals and guards, and the full execution log. Both start with a free trial.

Fit a model to a market tonight.

Free on the App Store. No account, no ads, and the first regime call takes about a minute of history download.