Hummingbird — Honest, on-device stock & crypto sketches

Not another prediction app

Most market apps sell certainty they don't have. Hummingbird does the opposite — it draws simple, transparent “sketches” from public prices, scores how reliable each one is, publishes how wrong past sketches have been, and stays honest about the limits.

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On-device & private

Everything runs on your iPhone. No account, no sign-in, no tracking, no data collected.

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Honest, not hype

Simple methods sketch a possible path from public prices — clearly labeled educational, never buy/sell advice.

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Reliability, scored

Every sketch gets a 0–100 read from how well it's tracked before, current conditions, and how far ahead it reaches — with the math shown.

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Shows its work — misses and all

An accuracy report tracks how close past sketches actually landed once real prices caught up — and which method has tracked each asset best. A record of the past, not a promise.

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Optional: check your own calibration

Turn on Practice tools (off by default) to log a direction call before you look, and see over time whether feeling sure meant being right. A private record of your thinking, never advice.

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Optional: practice portfolio

Also part of Practice tools: a virtual $10,000 portfolio to see whether your trades did anything simply buying and holding wouldn't have. On-device, end-of-day only, no real money. A record, never advice.

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Glanceable everywhere

Private watchlist, Home & Lock Screen widgets, a once-a-day morning read, and an optional Live Activity — kept fresh in the background, movement never signals.

A look inside Practice tools

Optional and off by default — turn it on to keep an honest check on your own calls.

The Call it screen: predict Higher or Lower for Bitcoin, choose a 3-day, 1-week or 2-week window, and how sure you are — before the sketch — Call it before you peek — Higher or Lower, and how sure you are.

Your call record: 50% right, and hit rate split by confidence — 100% when Fairly sure, 33% when Confident — Your record, scored honestly — including whether feeling sure meant being right.

Resolved calls checked against the real price, each marked right or wrong with the actual move — Every call checked against the real price. Receipts, not promises.

The practice portfolio: $10,323 total, beating buy-and-hold by 2.4%, with a chart of your value versus holding your first picks and versus the market (S&P) — Practice with $10,000 — see if your trades beat buy-and-hold, and the market.

We publish our own receipts

Most market apps hide their record. We publish ours — warts and all. Here are the founder's first four practice calls, scored honestly against real prices.

50%

right (2 of 4)

100%

when “Fairly sure”

33%

when “Confident”

The humbling part: confidence ran backwards — most wrong exactly where the founder felt most sure. Surfacing that gap between feeling certain and being right is what the optional practice log is for. Four calls prove nothing — which is the point.

The honesty pledge

Hummingbird produces educational projections from public prices — not predictions, price targets, or financial advice. Markets are unpredictable. It will never tell you to buy or sell, and it never sees an account, a balance, or a broker.

Download on the App Store →

Free to download. No account, no tracking — just the app, on your device.