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Don’t buy a changed formula. Know before you reorder.

Brands change the formula, not the name.

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HOW IT WORKS

Three steps. All free. No card. Nothing to install.

  1. 01 / ADD

    Scan the tub, or search it.

    Point your phone at the label, or type the name. 561 product listings across 65 brands, 10 of them Signal Verified, and a free request for anything missing.

    Your photo stays on your phone

  2. 02 / SEE

    See what changed.

    Every label is dated. A change counts only when two dated labels were compared and reviewed.

    GHOST Legend caffeine 202 mg to 300 mg

  3. 03 / SAVE

    Save it to your free account.

    Keep it on every device, and watch up to 3 pre-workouts, creatine products and protein products free. Your collection stays yours if you cancel monitoring.

    Up to 24 saved products. No card. The collection is yours.

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Verified to the label.

We read the label twice, date it, and link the source. Here is what that turned up on Cellucor C4 Original.

Cellucor C4 Original, front of package

Cellucor C4 Original

Two labels, published side by side.

Caffeine

Second listing150 mgMain listing200 mg

Beta-Alanine

Second listing1.6 gMain listing2 g

Both seen Oct 20, 2026. Published does not mean shipped: check the panel on your tub.

See the labels and sources
  • Read twiceTwo independent reads of the brand's own panel. Every number has to match.
  • DatedEach label tied to the day we saw it and the source it came from.
  • Like for likeA change counts only between the same flavor, size and store.
  • Gaps statedWhat we have not checked yet is printed as a gap, in plain words.

10 Signal Verified todaySee them all, and what we verify next

Not a laboratory test, safety certification, or endorsement of the product.

YOURS NEXT

What do you take?

Search 561 product listings. Not there yet? Request it. Requests help decide what we verify next.

WHAT THE RECORD COVERS

  • pre-workouts · monitoring open
  • electrolyte and hydration products
  • creatine products · monitoring open
  • protein products · monitoring open
See the confirmed change

HOW THE RECORD HOLDS UP

Sources you can open.
Limits we say out loud.

EVIDENCE

Every finding names its source.

Reviewed by FormulaSignal; a changed webpage alone is only a lead.

See confirmed changes

FAILURES

Failed checks stay visible.

No confirmed change is not proof that nothing changed.

See what we check

KEEP, OR WATCH

The collection is yours.
Signal Pro keeps watch.

Your Locker

$0

  • Up to 24 saved products
  • Available dated label references
  • Up to 3 pre-workouts, creatine products and protein products watched free

Your collection stays yours if you cancel monitoring.

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Signal Pro

$29.99/year

  • Up to 10 products, checked every day
  • An email when we confirm a change
  • A monthly receipt

Or $3.99 a month. Auto-renews; cancel in Settings.

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