Comparison

Potfolio vs PlasterCalculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Potfolio

This app simplifies ceramic research and documentation. It features a comprehensive material database, advanced recipe calculation tools, and artwork tracking to record the creation process. Collaborate and share your ceramic projects with ease.

Highlights
  • Detailed ceramic material database
  • Advanced recipe calculator (UMF, Mole Percent, Specific Gravity)
  • Artwork creation process tracking
  • Inventory management for materials
  • Recipe version history
  • Batch sheet tracking for material measurements
Features
Read full description

Welcome to your new portfolio. - Potfolio makes your research easy, accurate, and collaborative. Note: Potfolio requires a subscription. But don’t worry, you can get started for free. • • • Materials • Potfolio contains the most detailed and accurate ceramic material database available. With over 500 materials, and more always being added. • Using a material we don’t have? Send us an email and we’ll be sure to add it so everyone can use it. Or, add it yourself into your own private database. • Interested in the Analysis? We’ve got you covered with the UMF and Mole Percent. Want to compare materials? You can do that too. • Ever forgotten what materials you need? Not anymore, Potfolio can even track your inventory. • • • • • • • • Recipes • The most advanced recipe calculator ever made. With Potfolio, UMF and Mole Percent are just the beginning. We’ve also included Specific Gravity, and have more features on the way. • Versions. Materials change, and recipes get improved. But that doesn’t mean you need to remake your recipe. With versions, you can track the lineage of your recipes and see how they’ve evolved over time. • Batch Sheets, Ever forgotten how much material you’ve added to your bucket? With Potfolio’s Batch Sheets, it’s easy to track how much material you’ve measured, all it takes is a mark of your pencil. • • • • • • • • Artwork • Never forget how you made your art. With Potfolio, you can track your masterpiece from the clay you used, the slip you layered on, and even the glazes you layered on top. And with Blazed, you can even include your firing schedules. • Applying to a show? With Potfolio, your images, and artwork details, are always where you are. • Excited about your latest piece? Share it! Anyone who has Potfolio will be able to open it and see how you created it! • • • • • And so much more… including Blends, Element and Compounds, and Activity tracking. Experience the future of the ceramic process with Potfolio Your subscription will automatically renew after any applicable promotional period and your Apple ID account will be charged the subscription price on a recurring basis until you cancel. You can cancel your subscription at any time through your Apple ID account settings. If you cancel your subscription, the cancellation will go into effect at the end of your current subscription period, as applicable. You will have continued access to the Potfolio Service for the remainder of your paid subscription period. Privacy Policy: https://potfolio.app/#privacypolicy Terms And Conditions: https://potfolio.app/#termsandconditions

About

PlasterCalculator

Features
Read full description

Need a plaster mold to create your ceramic masterpiece? Do you need a simple plaster form suitable for a one-off project? Are you creating plaster slabs for drying wet clay or for a dampbox container? Plaster Calculator can help! It's easy to eye-ball the plaster/water ratio for a one-off or non-critical piece using the island method, such as for the bottom of a wetbox. However, when making multi-part molds or a series of identical molds, the proper ratio is critical to ensure consistency across molds and in the resulting ceramic piece. Plaster Calculator can help you determine the amount of plaster and water for your mix, ensuring consistent results using many of the common plaster types available, including #1 Pottery Plaster, Hydrostone, Ultracal, and several others. Key Features: Calculate the volume of your plaster need based on the dimensions of the most common forms in centimeters, inches, or feet. Forms include square/rectangle (cuboid), cylinder, sphere/half-sphere, pyramid (3 and 4 sided), and cone, as-well-as allowing you to enter an already known volume amount. Additionally, can calculate the volume of a void space within the plaster mold, such as when making a mold from an existing object, the void volume amount will be removed from the main volume. Save your mix calculation for later referral. Allows measurement of plaster and water in pounds/ounces or grams, the default can be changed in the Settings. Calculates a typical volume reduction of 30% (as recommended by some sources). This value can be changed between 0 (for no adjustment) and 45%, the default value can be changed in the Settings. Provides plaster weight variations -/+5 points from the standard consistency for the plaster. For example, the standard consistency of #1 Pottery Plaster is 70, variations are provided from 65 to 75 supplying the plaster amount needed for that consistency. Allows changing of the plaster type prior to saving mix, default plaster type can be changed in the Settings. Allows optional donation to developer - please do :) Please add a review :) Version 3.0 Changes =============== Revamped interface to use buttons for volume calculation type instead of swiping. Removed interface color options, now only system light and dark modes available. Removed animations on several UI elements. Ensure compatibility with iOS/iPad 26. The minimum iOS/iPad version is now 17.6. Various bug fixes, performance and interface improvements.

Screenshots

Potfolio4 screens
PlasterCalculator4 screens

Verdict

The call

Potfolio and PlasterCalculator are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Potfolio sells 2 in-app purchases, starting at $4.99 per month and PlasterCalculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Potfolio ships an update every 4 weeks, PlasterCalculator every 3 weeks. The most recent releases landed on June 4, 2026 and August 31, 2026 respectively.

ScorecardNo meaningful differences
Potfolio versus PlasterCalculator: the parameters behind the verdict, then further details
ParameterPotfolioPlasterCalculator
PriceFreeFree
Rating5.0 (4 ratings) — better—
Number of ratings4 — better—
Update frequencyEvery 4 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better17.6
Further details — not scored
Size440 MB8 MB
Age rating17+4+
DeveloperStoned Studio LLCSteve McCulloch

In-app purchases

2 purchases

Potfolio

Subscriptions2
  • Monthly$4.991 Month
  • Yearly3 Months trial$34.991 Year
1 purchases

PlasterCalculator

One-time1
  • Donation$0.99

Questions

Is Potfolio free?
Potfolio is free to download, with in-app purchases available.
Is PlasterCalculator free?
PlasterCalculator is free to download, with in-app purchases available.
Do Potfolio or PlasterCalculator have ads?
Neither Potfolio nor PlasterCalculator shows ads.
Which is updated more often, Potfolio or PlasterCalculator?
Potfolio ships an update every 4 weeks, and PlasterCalculator every 3 weeks. Most recently, Potfolio was updated on June 4, 2026 and PlasterCalculator on August 31, 2026.

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