Width times height times a rate is a formula. So is "premium vinyl costs a quarter more, the rate drops past 50 square feet, and no banner goes out under the minimum."
Globo handles the first one. The second needs a formula engine, and that's what Appify Custom Product Options is built on. Formulas run on every option and on the final price, with rate tables, if/then logic and a floor on the total, on every plan.
Here is what formula pricing really covers, where Globo stops, and the alternatives worth installing.
What Globo's formula does
Globo does the core job of an options app well: choices on a product page, each with an add-on price.
Its formula lives on the dimension option, on its top plan. The customer types up to three measurements. The formula multiplies, adds or divides them, times your rate, and the result is charged as an add-on.
That covers an area or a perimeter. It doesn't read the material or the finish. There is no rate table behind it, and its add-ons don't do tiered pricing or a minimum charge.
Where it fits: choice-driven products priced by add-ons, plus that one measurement price. Those jobs live inside Appify Custom Product Options too, with the formula engine behind them.
What formula pricing should cover
A formula engine prices the product the way you already quote it. Run your hardest product through these questions.
- Can a formula read any choice, not only the measurements?
- Is there a formula on the final price, where everything comes together?
- Can it look up your rate sheet inside the formula?
- Can it say "if this, then that"? Premium only over a certain size, for example.
- Can it round up, cap and set a floor? Whole boxes, a maximum, a minimum.
- Can you see why a result is wrong, step by step?
1. Appify Custom Product Options
Pricing is a set of formulas that read every choice the customer makes. The price updates as they build the product, and the calculated total is what they pay at checkout.
A formula everywhere a price is made
Any option can carry its own formula, and the total price formula brings them together. You can break a long calculation into named steps with pricing variables: work out the area once, then use it in the price, the discount and the shipping weight.
The formula editor has if/then logic, AND and OR, math functions like MIN, MAX and CLAMP, and rounding with ROUND, CEILING and FLOOR. It can count characters for engraving or count how many add-ons were ticked.
Your rate sheet, inside the formula
A formula can look up your price sheet. Put the rates in a pricing table, width by height or size by material, and the formula reads the right cell. It can match exactly, take the nearest row, or blend between rows for a size you never listed.
Around the formula sit the rules a real rate card has. Quantity discounts by quantity alone, or by quantity and size together.
Setup and rush fees. A minimum and maximum on the total. Percentage or flat adjustments when a condition is met.
You don't have to write any of it
Every formula field has a Describe with AI tab. You type "price is width times height times 3.50 a square foot, never under 50" and it returns MAX(50, INPUT("WIDTH") * INPUT("HEIGHT") * 3.50), using your own option names.
Explain formula turns any formula back into plain English. And when a price looks wrong, the Troubleshoot tab runs the formula with the choices you're testing, shows the value of every part, and names the fix.
Or skip the formula fields entirely. Describe the product to Chat with AI, or attach your price sheet, and it builds the options, the formulas and the rules. Every feature is on every plan.
Who it's for: any product priced by measurement, by rate sheet or by rule. For a walkthrough, see how to set up formula-based pricing on Shopify.
2. SE: Option Price Calculator
You'll meet other names while searching, so here is how they line up. SE: Option Price Calculator is the next most capable formula engine after Appify Custom Product Options. Formulas run on every option and on the final price, and they can read pricing tables, lookups and product metafields.
It calculates weight by formula too, with show and hide rules, quantity breaks, Shopify Markets currency and option translation. It's a focused calculator for measurement-based products, and a strong one.
Appify Custom Product Options adds the tools around the formula: if/then logic, math and rounding functions, variables, fees, minimums, troubleshooting and AI that writes the formula for you.
3. Easify Custom Product Options
Easify is the other options app you'll meet while searching, and its pricing works much like Globo's. Choices with add-on prices, plus a measurement formula on a higher plan: up to three typed numbers times your rate.
Where it fits: choices with add-on prices and that measurement price. Both jobs live inside Appify Custom Product Options too, with a full formula engine behind them.
Moving from Globo to Easify is a sideways move on formulas. Choosing either is choosing fewer features, not different ones.
Easify gets its own look in Easify alternatives for advanced pricing.
Side by side
Full support Partial, basic, or on a higher plan Not offered
| Capability | Appify Custom Product Options | Globo Product Options, Variant | Easify Custom Product Options |
|---|---|---|---|
| What a formula can read | |||
| Price from typed measurements | Yes, every plan | Measurements × rate, higher plan | Measurements × rate, higher plan |
| Formula reads any choice, not only measurements | Yes | No | No |
| Final-price formula that reads every choice | Yes | No | No |
| Pricing variables (named steps) | Yes | No | No |
| Rate-sheet lookups inside the formula | Yes, exact, nearest or interpolated | No | No |
| What a formula can do | |||
| If/then logic | Yes | No | No |
| Math and rounding functions | Yes: MIN, MAX, CLAMP, ROUND, CEILING and more | No | No |
| Minimum and maximum price on the total | Yes, on the total | No | No |
| Fees driven by a formula | Yes | No | No |
| Quantity discounts | Yes, by quantity and size | No | Tiered pricing per item |
| Getting the formula right | |||
| AI writes a formula from plain English | Yes | No | No |
| AI explains a formula in plain English | Yes | No | No |
| Step-by-step troubleshooting of a wrong price | Yes, Troubleshoot tab | No | No |
| AI builds the calculator from a description or price sheet | Yes, every plan | No | No |
| Beyond the formula | |||
| Product Designer design canvas | Yes, every plan | No | No |
| Edit options from the cart | Yes, every plan | Higher plan | Higher plan |
| Reorder and cart recovery that keep the options | Yes, every plan | No | No |
| Every feature on every plan | Yes | No | No |
Compared September 2026. Apps change, so features may have moved since.
Appify Custom Product Options is a full Yes on all 18 rows. Globo and Easify are a full Yes on none. What the formula reads, what it can do, how you get it right, and the design and order tools around it, with every feature on every plan.
Moving from Globo
You don't have to start from a blank page, or throw out the variants that still earn their place.
- Start from a screenshot. Take a screenshot of your Globo calculator on your product page. Drop it into Chat with AI and ask it to build the same calculator. It sets up the options from the image, so you aren't rebuilding them by hand. Here's how to turn a screenshot into a calculator.
- Add your pricing. Attach your price sheet as a CSV or Excel file, or describe how you price in plain English. Chat with AI writes the formulas.
- Keep your variants. The calculator can start from the selected variant's price and add to it. Swatches can pull their values and images from the variants you already have.
- Test before it's live. Check the preview against a few real orders. Nothing reaches the storefront until you publish.
More on the variant side in the best Shopify apps to replace variants. For rate sheets in depth, see formula pricing setup with pricing tables.
How to decide
If your price comes from a formula you'd write on a whiteboard, Appify Custom Product Options is the one to install. It runs that formula as written, reads your rate sheet inside it, and writes it for you if you'd rather not.
If you're weighing the other apps, SE: Option Price Calculator is the next most capable formula engine, and Easify prices the way Globo does. Choosing any of them is choosing fewer features, not different ones.
FAQ
What is the best Globo alternative for formula pricing?
Appify Custom Product Options. Formulas run on every option and the final price, with rate-table lookups, if/then logic, rounding and a minimum, on every plan.
Does Globo have formula pricing?
It has a measurement formula on its dimension option, on its top plan. Up to three typed numbers are combined with your rate and charged as an add-on.
Do I need to know how to write formulas?
No. Describe the price in plain English and the formula is written for you. Explain formula turns any existing formula back into plain English.
Can a formula use my price sheet?
Yes. Put the rates in a pricing table and the formula looks up the right cell by size, material or both. It can also blend between rows for sizes you never listed.
How do I find out why a price is wrong?
Open the Troubleshoot tab on that formula. It shows the value of every part for the choices you're testing and points to the fix.
Can I keep my Shopify variants?
Yes. The calculator can start from the selected variant's price, and swatches can pull their values and images from your variants.
Your whiteboard formula, running on every order.
Whatever you sell, however you price it · The last options app you'll shop for