A welding toolbox built by a UK steel-fabrication shop owner, lifted by a US sheet-metal influencer: the business of Fabora and "blue-collar trade apps"

Fabora: Steel & Metal Tools is a phone toolbox written by the owner of a UK steel-fabrication shop: 33 calculation and layout tools that welders, sheet-metal workers and steel fabricators need. It works offline. The shop-owner tools (quotes, invoices, drawing output) sit behind a subscription. It only went live at the end of July; iOS is small, but Android has passed ten thousand downloads. It got noticed because a US sheet-metal tradesman with several hundred thousand followers filmed a few voiceover videos about it. This piece covers what it is, where the traffic came from, whether it makes money, what it does badly, and whether the same playbook is worth running in another trade.

Oct 31, a photo of a parts list

On Oct 31, 2026, US sheet-metal tradesman Adam Fleisch posted a TikTok on his account Sheet Metal Samurai titled "I took a PHOTO of my parts list and it built my cut list." The caption sets up a scene every fabrication shop knows: "Last job I over-ordered material because I didn't list it properly, and the shop floor was full of leftover steel. This time I wrote the list, took a photo, and Fabora read it. It told me how many of each piece to buy, the cheapest way to cut each one, and spat out a PDF for the floor. How much offcut is lying on your racks right now?"

As of Nov 6 the video has 99k views and 3,200 likes (TikTok). It isn't his first Fabora push. In Sep 27 he posted on Facebook "Just learning to weld, what should my machine be set to? Try Fabora Steel Tools": 471k views and 6,800 engagements. The same post got 98k views on TikTok. Instagram has two more clips covering welding parameters and railing spacing, both tagged #FaboraSteelTools.

Sheet Metal Samurai has 325k followers on Facebook and 133k on TikTok, and claims more than 750k across platforms. His TikTok bio lists "Collaborations" and a business email on a media company's domain. Whether these posts are paid partnerships isn't visible from outside, with no contracts in view. But the business email and the standard voiceover-review format suggest they probably are (inference).

What it is and who made it

The developer account lists an individual name, jason bennett, and behind it is Fabora Platform Ltd of Chesterfield, UK. Every channel leads with the same pitch: "Built by a working UK steel fabricator": made by a UK steel tradesman who still works on the floor. The founder's own TikTok, @faboraplatform, has 119 videos, mostly shop-floor footage plus feature demos, each getting a few hundred views, with 450 followers.

Fabora was originally a small brand making software for the UK steel industry. Its main product is a web app for fabrication, on-site welding and steel-erection firms that writes safety method statements (RAMS), at £24.99 a month. Steel Tools is its third product line.

The app has three tiers:

It ships with six unit systems (US, UK, EU, Mexico, Australia, India) and section libraries, in 7 languages. In 3 months it has shipped 21 versions; the latest, 1.0.21, came out in Nov 2. One detail shows how much the author cares about the US market: in one release, the US-store notes use the example "2x2 tube" and say that "36½, 8 ft 6 in" notation can now be read. They also specifically note that colour matching now uses the American spelling "gray." The UK-store note for the same release uses "40 × 40 SHS" (App Store US and UK update notes, 11-02).

How big it really is

Not big, and most of the volume is on Android:

About 30 Android downloads in the last 9,100 days, which landed right after the Sheet Metal Samurai videos. Ireland's Utilities Top Grossing bar is low, so #41 could correspond to only a few subscriptions. That shows people are paying, not how much revenue there is (inference). US downloads and revenue aren't visible from outside.

Where users come from

Ranked by volume:

1. Niche creator voiceovers. The Sheet Metal Samurai videos above are the only source that reached hundreds of thousands of views. Notably, the videos mostly demo basics that older competitors also offer, like welding parameters and railing spacing. Only the Oct 31 video showed the new feature, AI reading of parts lists.
2. Meta and TikTok paid acquisition. Its privacy policy says that with user consent the app sends ad attribution back to TikTok and Meta. The website also runs the Meta Pixel to "measure downloads and trials from Facebook and Instagram ads." How much was spent isn't visible.
3. Free web tools on the website. faboraplatform.com/tools hosts 11 no-login web tools (steel weight, welding gases, hot-work permits, RAMS checklists and so on), with UK-leaning keywords. Each page links to both app stores.
4. Store search. The subtitle is "Weld, Pipe & Weight Calculator." Searching "steel weight calculator" or "metal fabrication" in the US store ranks it in the top 12.
5. Founder's own videos and Product Hunt: brought almost no volume. On Product Hunt it got 2 upvotes and placed #147 for the day.

Will people pay? Subscriptions get trashed in the welding crowd

Small shop owners have a reason to pay: quotes, invoices, exporting DXF to plasma or laser cutters, photographing cut lists. All of it saves time and helps them win jobs. An Android five-star review says they "paid from day one."

But on Android, 2.4 average rating, nearly every bad review is about the same thing: the subscription.

"$47.99 a year? No thanks." (Google Play review)

"Who pays a monthly subscription for a standard calculator?" (Google Play review)

Welders are used to one-time purchases. The oldest player in this niche, Calculated Industries, sells physical calculators and apps you pay for once. Apprentices and workers who come in through free tools don't want to subscribe. The ones who will pay are shop owners who need to quote and draw, and the creator videos bring mostly the first group (inference).

Who it's competing with

Welding calculators are not in short supply. What's missing is one app that covers everything a fab shop has to calculate, draw, and invoice in a day. I see no sign anyone is copying Fabora; the new welding calculators from the same period are each doing their own thing. Only welders and sheet metal creators on short video know it. Revenue is not public, nobody talks about it on X, and no media has written about it.

Where it falls short

• The payment model doesn't match the audience. The subscription model is the main reason for its low rating. There's no one-time or lifetime tier.
• It barely took off on iOS. US iOS has 16 ratings, while the creators' audience is on Facebook, mostly Android users (inference).
• The videos sell the free features. The paid features that make money for shops (quotes, drawings, AI photo reading) get little screen time. Only 10-31 shows them.
• Only welding and structural steel are covered. Electricians, HVAC, plumbers, carpenters and other trades have trade accounts with hundreds of thousands of followers, and there's the same pattern: lots of single-function calculators, no one has built a full workbench (inference; not checked trade by trade).

If it were you

Bottom line: Fabora itself is still small, and its revenue isn't proven. But the path is clear and cheap: someone who knows a trade builds a complete phone toolkit for it and pays a creator in that trade to sell it on video. Almost nobody is doing this. It's worth a test. The open question is whether subscriptions can make money with blue-collar users.

Who it suits: indie developers who have worked in a trade or have people close to them who do (electrical, HVAC, plumbing, carpentry, machining, painting, tile), and who can turn industry standards and code clauses into calculations and checks, not just plug in a formula.

Who it doesn't suit: people hoping to win on broad traffic and ASO. Single-function calculators already crowd these keywords, and a new app with a 0 rating gets nothing from just being listed. It also doesn't suit people who don't know the trade. A tradesperson will spot a wrong number immediately, and creators won't work with you.

How to build it: pick one trade and make the free tier work offline in the shop, with no account, no ads, and better than the old calculators. Put only the money-making features behind payment: quotes, invoices, drawings, photo reading of drawings or cut lists, and code self-checks. On pricing, avoid Fabora's mistake: offer a one-time or lifetime tier alongside the subscription, or subscribe only for business features. Use the same codebase and swap in country-specific codes and profile libraries. Launch in the US first, then the UK, Australia and Canada.

How to get users: on Facebook, TikTok and Instagram, find trade accounts with 100k to 500k followers that list a business email in the bio. One video can reach hundreds of thousands of views. Have the videos demo paid features (like photographing a drawing to generate a cut list), not basic calculations. Put a dozen or so login-free web tools on the website to catch search traffic.

When to move: before the first half of 2027. AI photo reading is still a fresh selling point. Big companies and the veteran calculator makers haven't caught up. Once players like Calculated Industries or the welding machine makers add the same features to their free apps, the selling point is gone.

How you'd know you're wrong: (1) six months on, Fabora's Android rating is still in the 2 range and its US iOS rating hasn't passed 100, and downloads fall back once the creator videos stop. That would mean these users don't pay and the volume was bought. (2) You run paid placements with two or three trade creators, and fewer than 2% of trial users convert to paid from each video. That would mean the unit economics don't work.

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Data and sources: App Store storefront pages and release notes for US, UK, Ireland and Australia (2026-11-06); App Store category charts (10-28 to 11-06); Google Play store page; AppBrain Android download estimates and reviews; TikTok @sheetmetalsamurai (10-31, 9-27); Facebook Sheet Metal Samurai videos (9-27); faboraplatform.com and its privacy policy; Product Hunt; The Fabricator (2026-09-09). Download numbers are third-party estimates. Revenue is not public. Whether the creator partnerships were paid has not been verified.