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Flash Aligners vs Whistle

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

Prices verified Sep 30, 2026FDA records verified Sep 30, 2026
5comparisons with Flash Aligners
5comparisons with Whistle

Flash Aligners (Flash Aligners (one plan, priced by case and clinic))·Whistle (Whistle Mild / Lite, Whistle Moderate, Whistle Comprehensive / Severe)

Flash Aligners
In-office
Whistle
In-office
At a glance
Starting price
₹60,000-95,000
₹60,000-1,75,000
Typical treatment

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.

The bottom line

What actually differs

  • Neither is marked lower, since only monthly prices quoted in US dollars are ranked against each other: Flash Aligners ₹60,000-95,000 and Whistle ₹60,000-1,75,000.
  • Typical treatment differs: Flash Aligners 4-6 months and Whistle 4-12 months.
Go deeper

Open the full record

Flash Aligners
  • Prices
  • Treatment length
  • Supervision
  • FDA safety
  • Specs
  • Sources
  • Where to get it
Whistle
  • Prices
  • Treatment length
  • Supervision
Keep comparing

Every comparison with these brands

Each brand against every other brand on the market. All comparisons

All 5 comparisons with Flash Aligners

  • vs Illusion Aligners
  • vs Invisalign
  • vs OrthoFX
  • vs Rejove32
  • vs Whistle (this page)

All 5 comparisons with Whistle

  • vs Flash Aligners (this page)
  • vs Illusion Aligners
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.
InvisibleBracesInvisibleBraces

The independent, fully-cited comparison of at-home clear aligner brands. Every figure traces to its source. Informational only, not dental or medical advice.

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4-6 months
4-12 months
Supervision
In-office
In-office
FDA safety
No recalls
No recalls
FDA adverse-event reports
0
0
Treatment
Treats
CrowdingSpacing and gapsCrossbiteDeep biteOpen biteMild to moderate misalignment
Crowding (mild to severe)Spacing and gapsOpen biteRelapse after bracesMinor protrusionBite correction and complex cases (Comprehensive plan)
Product lines
Flash Aligners (one plan, priced by case and clinic)
Whistle Mild / Lite, Whistle Moderate, Whistle Comprehensive / Severe
Wear schedule
All-day (22 hrs)
20 to 22 hrs/day; tray-change interval not published
Spec sheet
Start method
Live intraoral scan with a 3Shape TRIOS scanner at the certified orthodontist (no putty impressions)
3D scan at a partner clinic or a booked at-home 3D scan
Material
Trays thermoformed over 3D-printed models of the teeth; the polymer is not named (the brand calls it medical-grade and BPA-free)
Multi-layer 'Flexi-3' polyurethane aligner material, made in India
Retainers
Not published by Flash; its cost guide tells patients to check whether the clinic's quote includes retainers
Post-treatment retainers included (the FAQ notes inclusions can vary by plan)
Whitening
Not published
May be available in selected packages or offers
Refinements / touch-ups
Not published; its cost guide tells patients to ask whether refinements are in the quote
Mid-course refinement trays if clinically recommended, within the treatment timeframe without unexpected charges
Guarantee
Not published (the home page shows 'Guaranteed Satisfaction' with no terms)
Not published
Clinical oversight
In-office: a Flash-certified orthodontist directs treatment in person; Flash's orthodontic team drafts the plan for the doctor's approval
In-office: orthodontist-designed plans; partner-clinic dentists check the fit and hold check-ins every 6 to 8 weeks
Financing
Set by each clinic; Flash's 2026 guide says most certified clinics offer no-cost EMI of 5,000 to 7,000 rupees a month
No-cost EMI with zero down payment
HSA / FSA
Not applicable (India; US HSA/FSA does not apply)
Not applicable (India; US HSA/FSA does not apply)
Insurance
Flash's 2026 guide says some premium corporate and dental insurance plans may cover orthodontic treatment when medically necessary, and tells patients to check with their provider.
Not published
Availability
India, through Flash-certified orthodontists nationwide (the site claims 1,850+ on some pages and 2,100+ on its home page)
India
Headquarters
Mumbai, India (Ador House, Fort)
Delhi, India
Spec sources
  1. 1.flashaligners.in
  2. 2.flashaligners.in
  3. 3.flashaligners.in
  4. 4.flashaligners.in
  5. 5.flashaligners.in
  6. 6.flashaligners.in
  7. 7.flashaligners.in
  8. 8.flashaligners.in
  9. 9.flashaligners.in
  10. 10.flashaligners.in
  11. 11.flashaligners.in
  12. 12.flashaligners.in
  13. 13.flashaligners.in
  14. 14.flashaligners.in
  15. 15.tofler.in
  16. 16.instafinancials.com
  17. 17.falconebiz.com
  18. 18.opendentistryjournal.com
  19. 19.3shape.com
  1. 1.whistle.in
  2. 2.whistle.in
  3. 3.whistle.in
  4. 4.whistle.in
  5. 5.campaignbriefasia.com
  6. 6.tofler.in
Company
On the market since
2016
2023
Parent company
3D Future Technologies Pvt Ltd (Flash Orthodontics, Ador Group), Mumbai, India
Star Smile Manufacturing Pvt. Ltd., Delhi, India (clinical partner: Clove Dental)
  • FDA safety
  • Specs
  • Sources
  • Where to get it
  • vs Invisalign
  • vs OrthoFX
  • vs Rejove32