NolynNolyn

Product description generator

Product description generator that reads your competitors first

Price
Free plan: 100 credits, no card. One analysis uses about 53 credits.
What you get
The five best-placed competitors with price, rating, review count and category rank; praise and complaint counts from their reviews; the gaps no listing answers and the claims every listing already makes; a title within 200 characters, five bullet points and a 150–250 word description, each claim followed by the gap or complaint it answers; a list of claims to check against the real product.
Coverage
Ten Amazon stores: US, UK, Canada, Germany, France, Spain, Italy, Japan, Mexico and Brazil. The copy works for a Shopify or TikTok Shop page too, but the competitors are read on Amazon.
Time to report
Usually 1–2 minutes.
Account
Sign-in with Google required to run it. You can read the example and fill in the form without an account.

Enter your product's facts and a competitor keyword or ASIN. Before writing, Nolyn reads the five best-placed competing Amazon listings and the reviews of the three strongest, counts what buyers praise and complain about, and finds what no listing answers. Then it writes a title, five bullet points and a description from your facts only, and notes after every selling point which competitor gap or review complaint it answers.

Example: a 20 oz dog water bottle against “dog water bottle” on Amazon.com
Write a product description

Size, materials, features, what is in the box and the price. Only these facts go into the copy.

The search your buyers use, or a competitor's ASIN or product link.

Start from an example:

Sign in to run it. New accounts get 100 free credits; research uses credits for AI and data lookups.

What makes an AI product description generator write copy that sells?

Your product facts plus what buyers already say about the competition. In Nolyn's October 21, 2026 run for a 20 oz dog water bottle on Amazon.com, the five best-placed competitors had 61,125 ratings and 563 negative leak mentions, so the generated title and five bullets each name the competitor gap or complaint they answer.

What you get

What the competition says and misses

The five best-placed listings with price, rating, reviews and rank, what their buyers praise and complain about with counts, and the questions none of them answers.

A title, five bullets and a description

Written from your facts only: a title within Amazon's 200 characters, five bullet points and a 150–250 word description, ready to paste.

A reason behind every selling point

After each bullet and claim, the competitor gap or review complaint it answers, and a list of claims to check against the real product before you publish.

Example: a 20 oz dog water bottle against “dog water bottle” on Amazon.com

A real run on October 21, 2026 with example product notes for a 20 oz dog water bottle (flip-out bowl, one-hand fill button, lock, water flows back, Tritan body, carbon filter, carabiner, $16.99). The search for “dog water bottle” returned 15,750 results; Nolyn picked five best-placed competitors by category rank and ratings and read the reviews of MalsiPree, lesotc and Cibaabo.

Ratings across the five

61,125

Prices $12.99–$26.96, median $16.98

Negative leak mentions

563

All five listings

Title length

194

Characters, of Amazon's 200

Claims to check

6

Flagged before publishing

CompetitorPriceRating · ratingsRankTop complaint (negative mentions)
Cibaabo, 10 oz with food container and filter$13.984.7★ · 8,056#1Quality: 48 of 1,131
PupFlask, 27 oz stainless steel$26.964.4★ · 7,719#3Leakage: 299 of 416
Kalimdor, 19 oz$12.994.4★ · 8,406#4Durability: 141 of 184
MalsiPree, 19 oz$22.994.7★ · 23,358#11Durability: 227 of 295
lesotc, 18 oz squeeze bottle$16.984.6★ · 13,586#16Size: 101 of 220

The five competitors as Amazon showed them on October 21, 2026, and the complaint in each listing's review summary with the most negative mentions. Rank is the listing's best-seller rank in Dog Water Bottles.

Leaks are the category's biggest complaint, so the lock leads

The five listings' reviews hold 563 negative leak mentions; 299 of PupFlask's 416 (71.9%) are negative. The second bullet, “LOCK IT AND BAG IT”, cites that count, and the report says to describe what the lock does rather than claim a leak test.

Broken plastic and strings: 556 durability complaints

MalsiPree (227 of 295 negative), PupFlask (188 of 370) and Kalimdor (141 of 184) share 556 negative durability mentions; Amazon's review summary for MalsiPree says the carrying string broke off quickly. The carabiner bullet answers that, flagged to check the clip can hold a full bottle.

Nobody agrees on the dishwasher

Cibaabo says dishwasher safe to 250℉, lesotc says hand wash only, Kalimdor says not to use a dishwasher, and a MalsiPree reviewer says the head shrank in one. The fifth bullet leads with top-rack dishwasher safe, marked as a claim to confirm with the supplier.

A 194-character title and six claims to check

The title fits Amazon's 200 characters and starts with “Portable Dog Water Bottle, 20 oz”. Claims every listing already makes, such as BPA-free and leak-proof, are kept but tied to a mechanism. Six points are flagged before publishing, from bowl width to the 590 ml rounding.

Every figure was recomputed from the search, product and review responses saved from this run. Complaint counts are Amazon's review-aspect mentions (negative of all), not a hand count. The product notes were written for this example, not taken from a real listing. Nolyn's report put durability complaints at 604 across four listings; only three listings have a durability aspect, with 556 between them (the 48 extra are Cibaabo's negative quality mentions). It also labelled the collection time EDT instead of UTC.

Run it for your own product or account

How it works

  1. Find the competitors

    The five best-placed listings for your keyword, or the ASIN you give and its closest rivals.

  2. Read their reviews

    What buyers of the three strongest praise and complain about, with counts.

  3. Find the gaps

    Complaints and questions no listing answers, and the claims everyone already makes.

  4. Write and cite

    Title, five bullets and a description from your facts, with the reason after each selling point.

Who uses a product description generator

Sellers launching a product

Write the first listing against the competitors that already own the search, and lead with the complaints their buyers keep repeating.

Brands entering Amazon

Turn a spec sheet into a title, bullets and description that answer the questions buyers in that category actually ask.

Agencies and freelancers

Deliver copy with a reason behind every claim, so the client sees which competitor gap or review complaint each bullet answers.

What it cannot do

Nolyn writes only from the facts you enter and the competitor data it reads; it will not invent specifications or certifications, so it cannot fill in a fact you leave out. Complaint counts come from Amazon's review summaries and the top reviews it reads, not from every review. It does not estimate sales or search volume, does not upload anything to Seller Central, and the copy must be checked against the real product and Amazon's category rules before you publish.

Questions

Is there a free AI product description generator?

Running it needs a free Nolyn account: sign in with Google and you get 100 free credits. The sample run on this page cost 53 credits and took under 2 minutes. Free generic writers produce text from a product name alone; this one reads competitors' listings and reviews first.

How is this different from a regular AI writer?

A writer works from your prompt. Nolyn first reads the five best-placed competing listings and their reviews, so each selling point answers something buyers complain about or ask, and it says which. In the sample, the lock bullet cites 563 negative leak mentions.

Can it write Amazon titles and bullet points?

Yes. You get a title within Amazon's 200-character limit, five bullet points and a 150–250 word description for any of ten Amazon stores. The sample title has 194 characters.

Will it make up features?

It is told to use only the facts in your notes and never invent specifications, certifications or numbers, and it lists the claims to check. In the sample it flagged six, including the dishwasher rating, bowl width and the 590 ml rounding of 20 oz.

Can I enter a competitor ASIN instead of a keyword?

Yes. Paste an ASIN or product link and Nolyn reads that listing and searches for its product type to find the other competitors.

Does it work for Shopify or TikTok Shop?

The competitors are read on Amazon, but the title, bullets and description can be pasted into a Shopify or TikTok Shop page. Check that platform's own length limits.

What is the difference from Amazon listing optimization?

Listing optimization rewrites a listing that already exists, starting from its ASIN. This tool writes a new listing from your product notes, for a product you are launching or a page you are writing from scratch.

Does it estimate sales?

No. It shows Amazon's own labels such as “3K+ bought in past month” and best-seller ranks as displayed, without turning them into sales estimates.

Is there a free AI product description generator?

You can start free: new accounts get 100 one-time credits, no card required. One analysis like this uses about 53 credits, so the free credits cover about 1 runs. Paid plans add monthly credits.

Do I need to sign up?

To run it, yes: sign in with Google. It is free and asks for no card. You can read the example and fill in the form before signing in.

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