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Focused software that does one job well.

Tan Solutions is an independent studio. Rail Crossing Atlas puts every active U.S. grade crossing in the federal inventory on one site. Comeback offers a Shopify buyer an exchange before a refund. ShipSane shows which prices actually landed after a CSV import.

Rail Crossing Atlas is live and free to browse. Comeback is in Shopify App Store review: submitted 1 October 2026, with the fixes the reviewer asked for resubmitted 25 October 2026. ShipSane is not yet available to install; private store testing began 24 September 2026. Updated .

The products

The FRA crossing inventory, mapped

Map of the United States drawn from 202,487 crossing locations in the federal inventory, one point of light each. The points trace the rail network: a dense mesh across the Midwest and East, brightest around Chicago, and single lines across the West.

203,235crossings on this map

202,487 mapped · drawn from the FRA inventory of 4 October 2026

Inventory of 3 November 2026: 203,136 crossings

Rail Crossing Atlas

Website, free to browse: U.S. railroad crossings, mapped

Live

Public since 1 October 2026

An atlas of U.S. railroad crossings built from the Federal Railroad Administration’s crossing inventory: 203,136 crossings open at track level, in the inventory of 3 November 2026. Public records by state and crossing guides are open to everyone.

Rail Crossing Atlas release steps

  1. Load the FRA crossing inventory (done)Refreshed 3 November 2026: 203,136 crossings
  2. Public crossing records by state (done)Public since 1 October 2026
  3. Free accounts for the map, compare and record checks (done)Accounts live 3 October 2026
  4. Crossing guides (done)Guides index published 4 October 2026

Now: Live at railcrossingatlas.tansolutions.org. Public records and guides are free to read; the interactive map, compare and record checks need a free account.

Go to the Rail Crossing Atlas siteCreate a free accountStatus and summary

The options your customers see, in this order

  1. 1Swap size or colour
  2. 2Another product
  3. 3Store credit
  4. 4Refund

Comeback

Shopify app: Exchange-first returns

In App Store review

Submitted to Shopify on 1 October 2026; requested fixes resubmitted 25 October 2026

Returns that start with an exchange: a size or colour swap, another product or store credit before the refund, inside Shopify customer accounts. EU withdrawal button included.

Comeback release steps

  1. Build the core flows (done)Buyer and merchant flows built and covered by automated tests
  2. Test in a Shopify development store (done)The released app took a return end to end in a Shopify development store
  3. Production hosting and billing (done)Production hosting live and plan billing through Shopify built, 30 September
  4. Shopify App Store review (in progress)Submitted 1 October 2026, fixes resubmitted 25 October 2026, in review
  5. Available to install (next)When Shopify approves it

Now: Submitted to the Shopify App Store on 1 October 2026 and in review. The fixes the reviewer asked for were resubmitted on 25 October 2026. Installs open when Shopify approves it.

Go to the Comeback siteGet early accessStatus and summary

Post-import price receipt

  1. MUG-WHITECSV price $18.00Shopify price $18.00Match
  2. TEE-NAVYCSV price $28.00Shopify price $26.00Price differs
  3. BAG-OLIVECSV price $42.00Shopify price No resultNot returned

3SKUs checked

Example store · 24 Sep 2026, 12:00 UTC

ShipSane

Shopify app: Post-import price receipts

In development

Private store testing since 24 September 2026

Compares intended product CSV prices with current Shopify variant values and prepares a row-by-row receipt.

ShipSane release steps

  1. Build the core flows (done)Receipt flow built
  2. Test in a Shopify development store (in progress)Released QA app passed a matching file and saved receipt; broader acceptance in progress
  3. Production hosting and billing (next)
  4. Shopify App Store review (next)
  5. Available to install (next)

Now: Private owned-store testing is under way. ShipSane is not yet available to install or subscribe to.

See how ShipSane worksSee the sample receipt

Notes on railroad crossing records

Longer explanations of the federal crossing inventory behind Rail Crossing Atlas, each with its sources and the date its figures were read.

All notes

Latest progress

Every entry is dated and comes from the product’s own build records. A step is marked done only when it is finished.

Full progress log

  1. Rail Crossing AtlasThe atlas now shows the FRA crossing inventory of 3 November 2026: 203,136 crossings, public and private.
  2. ComebackThe fixes the Shopify App Store reviewer asked for were made and resubmitted. Comeback stays in review until Shopify approves it.
  3. ComebackSix more sourced guides published on the Comeback site, twelve in all: store credit, shipping on EU withdrawals, return rules per country and more.

Rail Crossing Atlas and Comeback each have their own site, with the full product, its guides and its help. ShipSane lives here until it opens.

Go to each product

Tell us what you need to check.

A crossing record, a returns flow or a price import: describe how you check it today. Please don’t send passwords, store credentials or customer data.

Email Tan SolutionsContact by product