Head to head

Invisalign vs LetSmile

Starting price, treatment length, supervision, FDA safety record and full spec sheet for Invisalign and LetSmile, side by side. Every figure links to the source that states it.

Prices checked against their sources Nov 11, 2026FDA records read Nov 10, 2026
81comparisons with Invisalign
6comparisons with LetSmile

Invisalign (Invisalign clear aligners)·LetSmile (LetSmile clear aligners)

Invisalign
In-office
LetSmile
Dentist-led
At a glance
Starting price
$1,800-8,000provider-set
€1,390Light; from €46/mo over 36 months
Typical treatment
12-18 months
2-8 months
Supervision
In-office
Dentist-led
FDA safety
No recalls
No recalls
FDA adverse-event reports
901
0
Treatment
Treats
CrowdingSpacing and gapsOverbiteUnderbite
CrowdingSpacing and gaps (diastemas)Crooked front teeth (3-3 anterior zone only)
Product lines
Invisalign clear aligners
LetSmile clear aligners
Wear schedule
20 to 22 hrs/day, trays typically changed about weekly
Not published by LetSmile: the brand does not state a specific daily wear time or tray-change interval (clear aligners are conventionally worn about 20 to 22 hours a day with trays changed on a set schedule, but LetSmile does not publish its own figures).
Spec sheet
Start method
In-office iTero 3D digital scan (or impressions) taken at a dentist or orthodontist, who submits a computer-simulated treatment plan
At-home visually guided (self-made) impression, or an impression taken at your local dentist; no impression-kit price is published
Material
SmartTrack (Align): a highly elastic multilayer thermoplastic developed after testing 260+ polymers, delivering gentler, more constant force
"Made in Germany"; the specific thermoplastic material name is not published by LetSmile
Retainers
Vivera retainers, custom-made and sold in sets of four, commonly $400 to $1,200; nightly wear recommended long-term to prevent relapse
Not published (LetSmile does not state whether post-treatment retainers are included)
Whitening
Not a built-in feature; whitening is done separately by the provider if desired
Not published / not advertised as included
Refinements / touch-ups
Additional aligner sets (refinements) to fine-tune results, typically included within comprehensive plans; exact allowance is provider-dependent
Not published
Guarantee
Not published (no manufacturer money-back guarantee; any guarantee is provider-dependent)
Money-back guarantee until aligner production begins; buyer protection via the brand's payment providers
Clinical oversight
Dentist or orthodontist directed, with in-person checkups throughout treatment
A personally assigned dentist checks eligibility and monitors the full treatment remotely via LetSmile's digital telemedicine model; dentists are described as independent practitioners with their own practices, remunerated by LetSmile
Financing
Through the provider: many practices offer monthly payment plans; terms vary by office
Monthly installment plans: EUR 65/month for 22 months (Light tier) or EUR 75/month for 32 months (Medium tier)
HSA / FSA
Eligible for HSA and FSA reimbursement as orthodontic care
Not applicable (European brand; not published)
Insurance
Often partially covered by dental or orthodontic benefits, with many plans applying a lifetime orthodontic maximum (commonly up to about $3,000)
Not published
Availability
US and 100+ countries, delivered through trained dentists and orthodontists: Invisalign's own region picker lists 122 countries and territories, from Canada and Brazil to the UK, Australia, Japan and India (checked 2026-10-10)
Germany and the Netherlands (sites available in German, Dutch and English via let-smile.com and letsmile.de)
Headquarters
Tempe, Arizona, USA
Haarlem, Netherlands (LetSmile B.V., Wagenweg 13); aligners manufactured in Germany
Spec sources
  1. 1.realdentalcosts.com
  2. 2.dentalroundup.com
  3. 3.myglowupdentistry.com
  4. 4.investor.aligntech.com
  5. 5.invisalign.com.au
  1. 1.let-smile.com
  2. 2.let-smile.com
  3. 3.web.archive.org
  4. 4.let-smile.com
  5. 5.let-smile.com
Company
On the market since
1998
2020
Parent company
Align Technology, Inc. (Nasdaq: ALGN), maker of the Invisalign system and iTero scanners
LetSmile BV, The Hague, Netherlands (aligners manufactured by a partner laboratory in Germany).

Blue marks the lower price only where every compared price is quoted the same way (a monthly price in US dollars); prices quoted in another currency, as a one-time fee or as a provider-set range are shown exactly as stated and never converted. Adverse-event figures are raw counts of reports filed with the FDA, not rates (what the reports mean). Each spec value opens that brand's spec sheet, and its numbered sources verify the specs as a set. None of this is a recommendation: the right choice depends on your case, your budget and, above all, an in-person exam by a dentist or orthodontist.

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InvisibleBraces is an informational data platform, not a dentist, an orthodontist, or a seller of aligners. Nothing here is dental or medical advice, a diagnosis, or a recommendation to start, stop, or change any treatment. At-home clear aligners are not right for every case, and moving teeth without an in-person exam carries real risk. Data is aggregated from public sources and each brand's own terms and can be incomplete or out of date. Always consult a licensed dentist or orthodontist and confirm current prices and terms with the provider.