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Pre-release · AI product research

Know if a product is worth selling.

Tier Lens researches any product with AI: search trends, prices, news, and an S–F grade on every part of it, with the traps spelled out in plain English.

Pre-release: the research bar opens a real example overview. It goes fully live at launch.

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Sneak peek · from 18 products researched so far

A peek at the rankings

At launch, our site agent ranks 500+ product types and keeps them fresh: products on the move are re-researched every week, and the whole list every month. Here's the top 10 from the research we've done so far.

What you're preordering

Everything in the full app.

All of this launches together. The examples below use real data from this week's research.

01 · Product overviews

Every product, graded on 7 things that decide if it sells.

Demand, margin, room to compete, shipping, video appeal, ease and safety. Each gets an S–F grade with a reason you can check, plus the traps nobody mentions, sources and an AI overview.

Open a full example overview →

Rechargeable hand warmer

Example from this week's research

D
  • BDemand
  • DMargin
  • CRoom to compete
  • CShipping
  • CVideo appeal
  • BEase
  • DSafety

Trap: Never source the recalled models (UT3053, UT3056, ZLS-118/118S/118D, H01, H01(PD)) or look-alikes from the same factory. Demand UN38.3 and IEC 62133 battery test reports before ordering.

02 · Graphs

See when people actually search for it.

Search-trend graphs on every product, so you can see the season before you buy stock. This example is real: hand warmer searches jump about 6× from September to December, then crash after January.

Monthly US searches for "hand warmers" · Example
0100K200K300K400KAug '25OctDecFebAprJunJul hand warmers · Aug 2025: 49,500 searches hand warmers · Sep 2025: 60,500 searches hand warmers · Oct 2025: 135,000 searches hand warmers · Nov 2025: 301,000 searches hand warmers · Dec 2025: 368,000 searches hand warmers · Jan 2026: 301,000 searches hand warmers · Feb 2026: 135,000 searches hand warmers · Mar 2026: 74,000 searches hand warmers · Apr 2026: 60,500 searches hand warmers · May 2026: 60,500 searches hand warmers · Jun 2026: 60,500 searches hand warmers · Jul 2026: 60,500 searches
Monthly US searches for "hand warmers" · Example
Monthhand warmers
Aug 202549,500
Sep 202560,500
Oct 2025135,000
Nov 2025301,000
Dec 2025368,000
Jan 2026301,000
Feb 2026135,000
Mar 202674,000
Apr 202660,500
May 202660,500
Jun 202660,500
Jul 202660,500

Source: RankHero monthly search estimates

03 · Compare

Put products head to head.

Overlay their graphs and get an AI overview of which one fits right now.Compare up to 3 products on Casual and 6 on Pro.

Monthly US searches · Example
  • snuffle mat
  • dog rain coat
  • dog water bottle
010K20K30K40KSep '25NovJan '26MarMayJul snuffle mat · Sep 2025: 22,200 searches snuffle mat · Oct 2025: 22,200 searches snuffle mat · Nov 2025: 27,100 searches snuffle mat · Dec 2025: 33,100 searches snuffle mat · Jan 2026: 33,100 searches snuffle mat · Feb 2026: 27,100 searches snuffle mat · Mar 2026: 27,100 searches snuffle mat · Apr 2026: 22,200 searches snuffle mat · May 2026: 27,100 searches snuffle mat · Jun 2026: 27,100 searches snuffle mat · Jul 2026: 27,100 searches dog rain coat · Sep 2025: 8,100 searches dog rain coat · Oct 2025: 8,100 searches dog rain coat · Nov 2025: 8,100 searches dog rain coat · Dec 2025: 5,400 searches dog rain coat · Jan 2026: 3,600 searches dog rain coat · Feb 2026: 3,600 searches dog rain coat · Mar 2026: 5,400 searches dog rain coat · Apr 2026: 4,400 searches dog rain coat · May 2026: 5,400 searches dog rain coat · Jun 2026: 5,400 searches dog rain coat · Jul 2026: 3,600 searches dog water bottle · Sep 2025: 12,100 searches dog water bottle · Oct 2025: 12,100 searches dog water bottle · Nov 2025: 12,100 searches dog water bottle · Dec 2025: 9,900 searches dog water bottle · Jan 2026: 9,900 searches dog water bottle · Feb 2026: 9,900 searches dog water bottle · Mar 2026: 14,800 searches dog water bottle · Apr 2026: 18,100 searches dog water bottle · May 2026: 22,200 searches dog water bottle · Jun 2026: 22,200 searches dog water bottle · Jul 2026: 22,200 searches
Monthly US searches · Example
Monthsnuffle matdog rain coatdog water bottle
Sep 202522,2008,10012,100
Oct 202522,2008,10012,100
Nov 202527,1008,10012,100
Dec 202533,1005,4009,900
Jan 202633,1003,6009,900
Feb 202627,1003,6009,900
Mar 202627,1005,40014,800
Apr 202622,2004,40018,100
May 202627,1005,40022,200
Jun 202627,1005,40022,200
Jul 202627,1003,60022,200

Source: RankHero monthly search estimates

AI comparison · Example

Snuffle mats hold up all year and peak in December–January. Dog rain coats peak in the fall. Dog water bottles are a summer product, at their low point from December to February. Launching in October? The snuffle mat and the rain coat match the season; the water bottle doesn't.

04 · AI research bar

Research any product, at the depth you need.

Type any product and get a brand-new overview with graphs, numbers and grades. Pick how deep it digs. Refresh it anytime to pull new data.

Try the research bar →
  1. 4

    Light

    Pulls the numbers (search trend, supplier and selling prices) and writes a quick AI overview.

  2. 3

    Medium

    Everything in Light, plus news and websites, read by a stronger AI model.

  3. 2

    Deep Pro

    Medium with many more news and web sources, read by our strongest AI model.

  4. 1

    Full Pro

    Our strongest AI model at maximum effort: the most sources, plus related products and what to research next.

05 · Pro newsletter

Your products, watched for you.

Save up to 10 products and get a personal weekly email about them. Pick 1 priority product: it's checked every day, and you get an alert the moment something important happens.

Example email, built from real data

Tier Lens · Priority alert

🔴 Rechargeable hand warmer: a big recall just landed

CPSC announced a recall of about 1.5 million rechargeable hand warmers (recall #26-659): 350 burn injuries, 15 fires and one death. The recalled design looks like most generic warmers.

Safety grade now: D


This week's saved products

  • Snuffle mat: searches rose 22% from October to November last year (22,200 → 27,100). Its season is starting.
  • Dog rain coat: in its fall peak right now (8,100 searches a month last Sep–Nov).

How grading works

S is always good for the seller. F is always a skip.

A safety problem can sink an otherwise great product, and we'll say so.

  1. 01DemandAre more people looking for it each week?
  2. 02MarginIs there room between what it costs you and what people pay?
  3. 03Room to competeCan a small seller still stand out, or is it crowded and undercut on Amazon?
  4. 04ShippingUS stock, fast delivery, nothing that breaks or needs special handling?
  5. 05Video appealDoes it sell itself in a 15-second video?
  6. 06EaseBeginner friendly? Few sizes, few returns, simple to explain?
  7. 07SafetyClear of patents, trademarks, product-safety and ad-rule problems?

Read the full grading guide →

Pre-release pricing

Preorder now. Pay nothing today.

  1. PreorderStripe saves your card. $0 today.
  2. Goal: $600by the deadline, counting money we can actually spend.
  3. Launchby the launch date at the latest. Charges start on launch day.
  4. Goal missed?One 30-day extension. Still missed: nothing is charged, card deleted.

$0 of $600 goal

0 members

Each preorder counts once: Casual $20, Pro $30, Pro Lifetime $40 (the other $200 is held for the shutdown guarantee). The goal is money we can actually spend. Launch happens when it's reached.

  • Free

    $0

    Always free

    See what made the list.

    • The full rankings: 500+ products, names and ranks
    • Search and filter the rankings
    • One free light AI research to try it
    • Weekly email with the biggest movers
    Get the free list
  • Casual

    $20/mo

    $25/mo after launch −20%

    Research any product, every week.

    20 light · 4 medium researches + 5 comparisons a week

    • Full AI overview of every ranked product
    • AI research bar: research any product, depths 4 and 3
    • Compare up to 3 products with overlaid graphs and an AI overview
    • Refresh any overview for new data
  • Recommended

    Pro

    $30/mo

    $40/mo after launch −25%

    Deep research plus your personal newsletter.

    30 light · 6 medium · 2 deep · 1 full researches + 8 comparisons a week

    • Everything in Casual, with higher weekly limits
    • Deep research: depths 2 and 1 (news, sources, related products)
    • Compare up to 6 products
    • Personal weekly newsletter on up to 10 saved products
    • 1 priority product checked daily, with an alert when something important happens

Pre-release prices stay locked in for as long as you stay subscribed. Weekly limits reset every week. Grades are research and opinion, not a promise of sales.

Questions

How many products are ranked?

At launch, 500+ product types, researched and ranked by our site agent. Products on the move are re-researched every week and the whole list every month, and the rankings keep growing after launch. Before launch you can see a top-10 sneak peek.

Am I charged when I preorder?

No. Stripe saves your card and you pay $0. You're only charged if preorders reach the $600 goal by the deadline. Then Tier Lens launches by the launch date at the latest, we email you first, and the first charge happens on launch day. The goal counts money we can actually spend, so a Pro Lifetime preorder counts $40: the other $200 is held for the shutdown guarantee.

Do I need an account?

To preorder, yes: sign in with an email link or Google (no password). Your account shows your preorder, lets you change your plan or cancel before launch, and holds your email settings. After launch, it's where all your research lives, on any device.

What if the goal isn't reached?

We extend the deadline once by 30 days and email you. If it's still missed, nothing is charged and your saved card is deleted within 14 days. You can also cancel your preorder yourself, any time before launch, from your account.

Is the pre-release price really locked in?

Yes. Casual stays $20/mo and Pro stays $30/mo for as long as you stay subscribed. If you cancel and come back later, the normal price applies. Pro Lifetime is $240 once instead of $400.

Is there a yearly plan?

Yes, from launch day: Casual $199/yr (save 34%) and Pro $299/yr (save 38%), compared with paying the monthly price after launch. Preorder monthly now and switch to yearly any time after launch, or move up to Pro Lifetime by paying the difference.

Can I get a refund?

Before launch you pay nothing, and you can cancel your preorder any time. After launch there are no refunds: you can cancel any time in your account and keep access until the end of the month or year you paid for. Two exceptions: the Pro Lifetime shutdown guarantee, and any refund the law requires.

What if Tier Lens shuts down?

Lifetime members get $200 back if Tier Lens shuts down within 1 year of launch. Monthly plans can cancel any time and are never charged for months they don't get, and yearly members get back the unused part of their year.

Is this financial advice?

No. Grades are our research and opinion, based on data and public information we can check. We never promise sales or income, and most products don't work for most sellers. That's why we grade them.

Where does the data come from?

Search-trend data, supplier and marketplace listings, news, and official safety, patent and ad-rule sources. Every overview lists its sources and says what we could not confirm.

Do you sell any of these products?

Sometimes a business we run sells or earns from a product we grade. When that happens, the overview says so, and we grade it extra strictly.