If you’ve been using MS Custom SizePrice Calculator and something isn’t working — crashes, billing confusion after uninstalling, or features that require too much developer involvement — you’re not stuck. There are solid alternatives, and switching is easier than you might think.
The best MS Custom SizePrice Calculator alternative for most Shopify merchants is Apippa Custom Price Calculator. It covers the same core use cases (dimension-based pricing, width × length formulas, custom size inputs) with more reliability, 200+ reviews, and no coding required.
Here’s a clear breakdown of what’s happening with MS and what your options are.
What MS Custom SizePrice Calculator Does
MS Custom SizePrice Calculator (by MS Web Designer) is a Shopify app that calculates product prices based on custom dimensions. Merchants enter a width and height, and the app multiplies those values against a base price. It’s been used by wallpaper stores, door mat sellers, blind retailers, and similar businesses where products are sold by size.
The app has 17 reviews with a 2.7-star average. About 82% of reviewers gave it 5 stars — but 18% gave it 1 star, with no reviews in between. That polarized rating pattern usually points to something specific going wrong for a subset of users.
Why Merchants Are Looking to Switch
Looking at recent reviews and complaints, a few problems come up repeatedly.
Crashes on storefront. One wallpaper merchant who’d used the app for two years reported it started “frequently crashing and not functioning properly.” Customers couldn’t complete orders. For a store where every transaction depends on the calculator working, that’s a serious problem.
Billing disputes after uninstalling. One merchant reported being charged for months after uninstalling the app. The developer responded that Shopify’s billing system automatically stops charges on uninstall — which is technically true — but the experience clearly left the customer unhappy enough to leave a 1-star review. Whether a billing issue, a timing gap, or a Shopify quirk, it created real frustration.
Reliability concerns at scale. A merchant using the app for two-plus years, who had praised it previously, ultimately said they didn’t recommend it after the crashing issues mounted.
When a calculator app crashes, customers can’t complete purchases. That’s not a UX problem — it’s a revenue problem.
How Apippa Compares
Apippa Custom Price Calculator handles the same use cases as MS — dimension-based pricing, formula logic, custom size inputs — with a significantly larger review base and more consistent reliability.
| Feature | MS Custom SizePrice Calculator | Apippa Custom Price Calculator |
|---|---|---|
| Shopify reviews | 17 reviews, 2.7 stars | 200+ reviews, 4.8 stars |
| Pricing model | Paid | Free trial, paid plans |
| Dimension pricing | ✅ | ✅ |
| Formula builder | Basic (height × width) | Advanced (formulas with multiple variables) |
| Custom units (mm, cm, ft) | ✅ | ✅ |
| Minimum/maximum size constraints | ✅ | ✅ |
| Made-to-order products | ✅ | ✅ |
| Built for Shopify badge | ❌ | ✅ |
| Coding required? | No | No |
| Support response | Mixed | Consistently rated as fast |
The Built for Shopify badge is worth noting. It’s a Shopify certification that requires meeting specific performance, security, and support standards — and it’s not easy to earn. Apippa has it. MS does not.
Who Apippa Is Built For
Apippa is designed specifically for Shopify merchants selling custom-size products. If you sell wallpaper, fabric, blinds, floor mats, canvas prints, signage, or anything else where the price depends on the customer’s custom dimensions, Apippa handles the calculation in real time on the product page.
The formula builder supports:
- Width × length × price per unit (the most common setup for fabric, wallpaper, carpet)
- Area pricing with minimum order sizes
- Multiple input types — dropdowns for material, number fields for dimensions, quantity selectors
- Pricing tables — so you can change the per-unit price based on order size
- Conditional pricing — different formulas for different product configurations
No JavaScript knowledge required. You set it up through a visual interface.
How to Switch From MS Custom SizePrice to Apippa
Switching takes a few hours at most. Here’s the process:
Step 1: Note your current pricing formula. Before doing anything else, document your base price, the formula you’re using (likely width × length × price), any minimum dimensions, and any special pricing rules. You’ll recreate this in Apippa.
Step 2: Install Apippa. You can install it from the Shopify App Store without removing MS first. Both can run simultaneously while you test.
Step 3: Set up a calculator in Apippa. Create a new calculator, add dimension inputs (width, height or length), and configure your formula. For a basic width × height × base price setup, this takes about 20 minutes.
Step 4: Test on a duplicate product. Duplicate one of your products and attach the Apippa calculator to it. Enter a few test dimensions and confirm the price matches what you’d expect.
Step 5: Go live and remove MS. Once you’re satisfied the calculator is working correctly across your products, publish the change and uninstall MS. Check your billing at that point to confirm the MS subscription was cancelled.
Apippa’s support team helps with setup — if you hit anything unusual, they’re quick to respond.
Internal Links
For more context on how Apippa handles specific use cases:
- How to Sell Flooring on Shopify — dimension-based pricing for carpet, LVT, and hardwood
- Shopify Price Calculator for Blinds — width × drop pricing for made-to-measure blinds
- How to Price Made-to-Order Products on Shopify — formula-based pricing for custom makers
Frequently Asked Questions
Is Apippa really more reliable than MS Custom SizePrice Calculator? Based on public reviews, Apippa has a significantly higher and more stable review score (4.8 vs 2.7 on the Shopify App Store). It also carries the Built for Shopify badge, which requires meeting Shopify’s reliability and support standards. MS does not have that badge.
Can Apippa handle width × height pricing the same way MS does? Yes. Width and height are the most common inputs in Apippa. You can set units (mm, cm, inches, feet), define minimum and maximum values, and use those dimensions in any formula. The result updates in real time as the customer types.
What if I have a complex formula that MS was handling with custom code? Apippa supports multi-variable formulas and pricing tables without code. Most setups that required custom work in other apps can be handled in Apippa’s formula builder. If you have an edge case, support can advise on the right approach.
Do I need to uninstall MS before installing Apippa? No. You can run both simultaneously, which lets you test Apippa without disrupting your live store. Uninstall MS only after you’ve confirmed Apippa is working correctly on all your products.
How much does Apippa cost? Apippa offers a free trial. Check the Apippa app listing for current plan pricing, as it can change. It’s worth comparing against what you’re currently paying for MS.
If your store depends on a working size calculator and yours has been unreliable, the fastest fix is a free trial on Apippa. Most merchants are up and running within a few hours.
Ready to set up dynamic pricing on your store?
Free to install · No coding required · Works with any Shopify theme