Four Sigmatic vs Teafy

This 2026 comparison covers Four Sigmatic and Teafy across price, testing transparency, heavy metal disclosure, and organic certification. Teafy publishes a numeric Certificate of Analysis with specific ppb values from a named lab. Four Sigmatic has not published equivalent numeric results as of the last verification date. Both brands are priced within 5% of each other per gram, so price is not a meaningful differentiator here.

Verified using public brand and product information.Last verified: Four Sigmatic June 27, 2026, Teafy June 21, 2026.

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At a Glance

Four Sigmatic

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Origin: Not disclosed
Grade: Not specified
Price per gram: $0.67/g
Organic: Not certified
Testing: No public testing information found
Last verified: June 27, 2026

Teafy

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Origin: Kyoto Uji + Shizuoka, Japan
Grade: Ceremonial
Price per gram: $0.70/g
Organic: EU
Testing: Publishes numeric lab results
Last verified: June 21, 2026

Key Differences

Origin

Not enough information

Four Sigmatic

Not disclosed

Teafy

Kyoto Uji + Shizuoka, Japan

Teafy discloses its origin. The other brand has not publicly disclosed its leaf origin.

Organic certification

Certified

Four Sigmatic

Not certified

Teafy

Teafy holds organic certification. Four Sigmatic does not have a publicly confirmed organic certification.

Testing transparency

More transparent

Four Sigmatic

No public testing information found

Teafy

Publishes numeric lab results

Teafy discloses more testing information. Lower transparency tier means more public disclosure.

Which Should You Choose?

Choose Teafy if:

Testing transparency is important to you
You want to see published numeric lab results
Organic certification matters to you

Heavy Metal Testing

Four Sigmatic

No published numeric heavy metal results found.

Last checked June 27, 2026.

Teafy

Numeric heavy metal results are publicly available.

Last checked June 21, 2026.

Source: brand-published COAs and independent test results. Values are from specific batches and dates. The absence of published data does not indicate safety or danger. Last verified: Four Sigmatic June 27, 2026, Teafy June 21, 2026.

Full Comparison

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Attribute	Four Sigmatic	Teafy
Origin and Production
Origin	--	Kyoto Uji + Shizuoka, Japan
Grade	--	Ceremonial
Country	--	Japan
Region	--	Kyoto Uji + Shizuoka
Price and Value
Price per gram?	$0.67/g	$0.70/g
Price as of	2026-06-27	2026-06
Organic Certification
Organic status	--	EU
Testing and Transparency
Testing transparency	--	Publishes numeric lab results
Publishes numeric lab results	--	Yes
Third-party testing disclosed	--	Yes
Pesticide testing	--	Yes
Published lead test result	No published results found (checked June 27, 2026)	67 ppb
Published cadmium test result	No published results found (checked June 27, 2026)	13 ppb
Published arsenic test result	No published results found (checked June 27, 2026)	21 ppb
Published mercury test result	No published results found (checked June 27, 2026)	No published results found (checked June 21, 2026)
Last verified	June 27, 2026	June 21, 2026

Frequently Asked Questions

Is Four Sigmatic or Teafy cheaper?

Four Sigmatic is cheaper at $0.67/g vs $0.70/g per gram, a difference of $0.03/g. Prices verified as of 2026-06-27.

Does Four Sigmatic publish lab results?

No public testing statement or COA has been found for Four Sigmatic as of June 27, 2026.

Does Teafy publish lab results?

Yes. Teafy publishes a numeric Certificate of Analysis with specific ppb values from a named accredited lab. Verified June 21, 2026.

Which is third-party tested: Four Sigmatic or Teafy?

Teafy is third-party tested. Four Sigmatic does not have a confirmed third-party testing status as of the last verification date.

Is Four Sigmatic or Teafy organic?

Teafy holds EU certification. Four Sigmatic does not have a publicly confirmed organic certification as of the last verification date.

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All data in this comparison is sourced from publicly available COAs, brand websites, and independent test results. Every safety data point carries its source and last-verified date. Steady Matcha does not conduct or claim ownership of third-party test results for other brands. Brand information changes: verify current status before purchasing.