Tornado Chart | Zyeon UI

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status=ready — 8 drivers handed over in the model's own order and ranked here by swing, largest first. Base case 9.6, axis 0 to 20, so the reference line sits at 48% rather than in the middle.

What moves NPV the most

One-at-a-time, 5-year model, run 2026-07-31

Low settingHigh settingBase case9.6

What moves NPV the most — every driver with its low and high settings, the result each produces, and the swing between them, on one shared scale from 0 to 20 with base case at 9.6.
Driver	NPV ($M)	Swing
Unit price	Low $183.1High $2416.4	13.3
Monthly churn	High 3.4%5.9Low 1.6%14.2	8.3
Attach rate	Low 22%6High 38%12.9	6.9
Discount rate	High 11.5%7.2Low 7.0%12.4	5.2
Ramp to volume	High 9 mo7.5Low 4 mo11.6	4.1
Freight per unit	High $1.608.5Low $0.9011	2.5
Support headcount	High 9 FTE8.8Low 6 FTE10.4	1.6
Card fee	High 2.9%9.3Low 2.5%9.9	0.6
	05101520

Each row varies one driver across its range while every other stays at base case, so the bars are independent what-ifs and never add up. The scale is not mirrored about base case: a driver with a small downside and a large upside is drawn exactly that lopsided.

status=ready — a negative base case (−2.4), a 46-character driver name that wraps instead of truncating, one end landing exactly on the base case (Data egress, low), a driver whose two settings both push down so its segments overlap (GPU spot discount, tagged “same direction”), and one that moves nothing (Payroll tax rate, tagged “no effect”).

Awkward drivers

Negative base case, an overlapping driver and a dead one

Downside settingUpside settingCurrent run-2.4

Awkward drivers — every driver with its downside and upside settings, the result each produces, and the swing between them, on one shared scale from -10 to 5 with current run at -2.4.
Driver	EBITDA ($M)	Swing
Enterprise contract renewal rate at 12 months	Downside 78%-7.1Upside 93%3.6	10.7
Data egress	Upside $0.11 / GB-5.2Downside $0.04 / GB-2.4	2.8
Seat count	Downside 1,200-3Upside 1,900-0.9	2.1
GPU spot discountsame direction	Upside 45%-3.1Downside 10%-4.9	1.8
Payroll tax rateno effect	Upside 6.4%-2.4Downside 6.0%-2.4	0
	-10-505

Each row varies one driver across its range while every other stays at current run, so the bars are independent what-ifs and never add up. The scale is not mirrored about current run: a driver with a small downside and a large upside is drawn exactly that lopsided.

status=ready — every driver can only add revenue, so the base case is pinned to the left edge of the axis and nothing is drawn to its left. No symmetric scale is forced, which would have spent half the width on an empty half.

Checkout experiments under consideration

Nothing here can lose money, so the axis starts at the base case

Not shipped settingShipped settingDo nothing0

Checkout experiments under consideration — every driver with its not shipped and shipped settings, the result each produces, and the swing between them, on one shared scale from 0 to 200 with do nothing at 0.
Driver	Incremental revenue ($K / mo)	Swing
Cross-sell prompt	Not shipped off0Shipped on180	180
Checkout upsell	Not shipped off0Shipped on128	128
Bundle discount	Not shipped 0%0Shipped 8%96	96
Reminder email	Not shipped none0Shipped 2 sends54	54
	050100150200

Each row varies one driver across its range while every other stays at do nothing, so the bars are independent what-ifs and never add up. The scale is not mirrored about do nothing: a driver with a small downside and a large upside is drawn exactly that lopsided.

Same data, levers moved: sort="given" keeps the feed's order so the funnel disappears (the summary still names the real top driver), showValues={false} drops the printed settings to screen readers only, barHeight={12} and axisIntervals={6} give a denser plot on a finer 2.5-wide axis.

NPV drivers in model order

Dense reading layout — model order, no printed settings

Low settingHigh settingBase case9.6

NPV drivers in model order — every driver with its low and high settings, the result each produces, and the swing between them, on one shared scale from 2.5 to 17.5 with base case at 9.6.
Driver	NPV ($M)	Swing
Card fee	High 2.9%9.3Low 2.5%9.9	0.6
Unit price	Low $183.1High $2416.4	13.3
Support headcount	High 9 FTE8.8Low 6 FTE10.4	1.6
Monthly churn	High 3.4%5.9Low 1.6%14.2	8.3
Freight per unit	High $1.608.5Low $0.9011	2.5
Attach rate	Low 22%6High 38%12.9	6.9
Ramp to volume	High 9 mo7.5Low 4 mo11.6	4.1
Discount rate	High 11.5%7.2Low 7.0%12.4	5.2
	2.557.51012.51517.5

status=empty — the model ran but nothing was varied. Not the same picture as an axis with no bars on it.

What moves NPV the most

One-at-a-time, 5-year model, run 2026-07-31

Nothing has been varied yet

Give each driver a low and a high setting and this ranks them by how far they move the result.

status=loading — a funnel-shaped skeleton in the same three columns, so nothing shifts when the data lands. The pulse stops under prefers-reduced-motion; the silhouette does not.

What moves NPV the most

One-at-a-time, 5-year model, run 2026-07-31

status=error with onRetry — Try again really does resolve this card (it is the only card on this page that changes).

What moves NPV the most

One-at-a-time, 5-year model, run 2026-07-31

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Driver

NPV ($M)

Swing

Unit price

Low $183.1High $2416.4

13.3

Monthly churn

High 3.4%5.9Low 1.6%14.2

8.3

Attach rate

Low 22%6High 38%12.9

6.9

Discount rate

High 11.5%7.2Low 7.0%12.4

5.2

Ramp to volume

High 9 mo7.5Low 4 mo11.6

4.1

Freight per unit

High $1.608.5Low $0.9011

2.5

Support headcount

High 9 FTE8.8Low 6 FTE10.4

1.6

Card fee

High 2.9%9.3Low 2.5%9.9

0.6

Driver

EBITDA ($M)

Swing

Enterprise contract renewal rate at 12 months

Downside 78%-7.1Upside 93%3.6

10.7

Data egress

Upside $0.11 / GB-5.2Downside $0.04 / GB-2.4

2.8

Seat count

Downside 1,200-3Upside 1,900-0.9

2.1

GPU spot discountsame direction

Upside 45%-3.1Downside 10%-4.9

1.8

Payroll tax rateno effect

Upside 6.4%-2.4Downside 6.0%-2.4

Driver

Incremental revenue ($K / mo)

Swing

Cross-sell prompt

Not shipped off0Shipped on180

180

Checkout upsell

Not shipped off0Shipped on128

128

Bundle discount

Not shipped 0%0Shipped 8%96

Reminder email

Not shipped none0Shipped 2 sends54

Driver

NPV ($M)

Swing

Card fee

0.6

Unit price

13.3

Support headcount

1.6

Monthly churn

8.3

Freight per unit

2.5

Attach rate

6.9

Ramp to volume

4.1

Discount rate

5.2