Comparison

Calculation Solitaire vs Castle Solitaire

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

Head to head
About

Calculation Solitaire

A unique solitaire game where the objective is to move all cards to the foundation piles, but with a twist: foundation piles are built by stepping up by a specific number, ignoring suits. A hint card guides players through the challenging gameplay.

Highlights
  • Unique foundation building by number steps
  • Hint card for planning
  • Stashing columns for cards
  • Adjustable difficulty levels
  • Bonus game mode
Features
Read full description

CALCULATION SOLITAIRE is a challenging game that will keep you thinking. Like normal solitaire the objective is to move all cards onto the foundation, but unlike normal solitaire you don't build the foundation in-order (suits are ignored). Rather you step by a number with wrap around (modulo 13 for the mathies in the crowd). The first pile is built stepping by 1s. A 2 3 4 5 6 7 8 8 T J Q K The second pile is built stepping by 2s. 2 4 6 8 T Q A 3 5 7 9 J K The third pile is built stepping by 3s. 3 6 9 Q 2 5 8 J A 4 7 T K The fourth pile is built stepping by 4s. 4 8 Q 3 7 J 2 6 T A 5 9 K Sounds confusing, but we provide a helpful hint card which shows the progression so you know what is coming next and can plan to win the game... which you will need to do because it is very challenging. There are board columns where you can stash cards that don't yet go on the foundations. However cards on the board cannot be moved, unless they are promoted to the foundation. Totally free!! No in-app purchases. You can play an easier or a harder version plus a bonus game One234 where all the cards are laid out in a fan.

About

Castle Solitaire

A free card game where players build four castles by arranging cards of the same suit in descending order. Customize your experience with different backgrounds and earn new titles as you progress through levels. Enjoy exciting winning animations and a unique twist on classic solitaire gameplay.

Highlights
  • Build four castles from Ace to King
  • Arrange cards in descending order
  • Tap stockpile for more cards
  • Customizable backgrounds and card decks
  • Progress through levels and earn titles
  • Exciting winning animations
Features
Currently charting
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Castle Solitaire is a free and fun new card game from MobilityWare, the maker of all your favorite solitaire games. In this fast and easy to learn game, you can build your castles and fly your banner high! == How to Play == To win at Castle Solitaire, fill the four castles from Ace to King. Tap to arrange cards of the same suit in descending order below the castles. If you get stuck, just tap the stockpile to reveal more cards to use. Castle Solitaire is similar to Vanishing Cross or King’s Corner, but with it’s own special twist. == Features == - Customize your experience with different backgrounds and cards. You can even use one of your own photos as the background! - Progress through the levels and earn new titles from Serf up to Town Crier and beyond! - Celebrate your wins with exciting winning animations! == More Fun Card Games from MobilityWare == - Solitaire, also known as Klondike or Patience - Spider Solitaire - Freecell - Pyramid Solitaire - Crown Solitaire - Tripeaks Solitaire - Spider Go Solitaire - Destination Solitaire - Blackjack casino game LIKE US on Facebook http://www.facebook.com/mobilitywaresolitaire Questions? Comments? Concerns? We would love to hear from you! Reach us at http://www.mobilityware.com/support.php Castle Solitaire is created and supported by MobilityWare. EXCLUSIVE FEATURES WITH SUBSCRIPTION SERVICE - NO Ad interruptions or Banners! - Ability to play future Daily Challenges! - Four Exclusive Themes with Four Gorgeous Card Sets! About Castle Solitaire Subscription Castle Solitaire Subscription is an optional subscription that gives you access to seamless play without any ads, the ability to play future Daily Challenges and exclusive themes. You can subscribe to Castle Solitaire for a term of one month, three months or for one year. New subscribers can choose a one-week trial subscription at no cost. The monthly term costs US$1.99. The three-month term costs US$4.99. The yearly term costs US$9.99. The subscriber's iTunes Account will be charged when the purchase is confirmed. Any unused portion of a free trial period is forfeited when a subscription is purchased. Subscriptions renew automatically unless automatic renewal is turned off at least 24 hours before the end of the current term. Renewal prices are US$1.99 per month, US$4.99 per every three months, or US$9.99 per year. The subscriber's iTunes Account will be charged for a renewal in the last 24 hours of the current period. Purchasers can manage their subscription and turn off automatic renewal in their Account Settings. Subscriptions may be stopped by turning off automatic renewal at least 24 hours before the end of the current period. A subscription cannot be cancelled in the middle of its term. Please see our privacy policy at http://mobilityware.com/privacy-policy.php

Screenshots

Calculation Solitaire4 screens
Castle Solitaire4 screens

Verdict

The call

The clearest difference is review sentiment: Castle Solitaire at 68% against Calculation Solitaire's 25%. Castle Solitaire also leads on rating (4.8 vs 2.8) and update cadence (monthly vs every 12 months). Calculation Solitaire's advantage is in-app purchases (none vs 6) and iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

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. Castle Solitaire sells 6 in-app purchases, starting at $1.99 per month. Calculation Solitaire asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Castle Solitaire holds the better App Store score, 4.8 against 2.8. That said, the two scores are not equally well evidenced: Castle Solitaire has 203K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 25% of Calculation Solitaire's written reviews are positive against 68% of Castle Solitaire's.

UpkeepUpdate frequency

Calculation Solitaire ships an update every 12 months, Castle Solitaire monthly. Both last shipped on October 24, 2026.

Scorecard8 real differences · 3 level
Calculation Solitaire versus Castle Solitaire: the parameters behind the verdict, then further details
ParameterCalculation SolitaireCastle Solitaire
PriceFreeFree
Rating2.8 (4 ratings)4.8 (203K ratings) — better
Positive reviews25.0% of reviews67.7% of reviews — better
Number of ratings4203K — better
Update frequencyEvery 12 monthsMonthly — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
Best chart rank—#192 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size18 MB363 MB
Age rating4+4+
DeveloperMmpApps Corp.MobilityWare

Customer experience

Calculation Solitaire

All ratings4 ratings
Positive25.0%
Neutral25.0%
Negative50.0%
Written reviews4 reviews
Positive25.0%
Neutral25.0%
Negative50.0%

Castle Solitaire

All ratings202,166 ratings
Positive95.5%
Neutral3.3%
Negative1.2%
Written reviews865 reviews
Positive67.7%
Neutral10.9%
Negative21.4%

Bugs and requests

Calculation Solitaire

Not enough reviews yet to summarise bugs or requests.

Castle Solitaire

Reported bugs

2 issues
  • Ads that cannot be closed
  • Game freezing or restarting unexpectedly

Requested features

4 requests
  • More variety in puzzle designs and castle themes
  • Ability to replay favorite puzzle animations
  • Option to disable auto-complete feature
  • Progress tracking and achievements

In-app purchases

None

Calculation Solitaire

No in-app purchases

6 purchases

Castle Solitaire

Subscriptions4
  • Premium Status 1 Month7 Days trial$1.991 Month
  • Premium Status 6 Months$2.996 Months
  • Premium Status 3 Months$4.993 Months
Show 1 more
  • Premium Status 12 Months$9.991 Year
One-time2
  • Premium Pass$0.79
  • Premium Pass$0.99

Questions

Is Calculation Solitaire free?
Calculation Solitaire is free to download, with no in-app purchases.
Is Castle Solitaire free?
Castle Solitaire is free to download, with in-app purchases available.
Which has better reviews, Calculation Solitaire or Castle Solitaire?
Castle Solitaire is rated higher. Calculation Solitaire averages 2.8 out of 5 from 4 ratings, while Castle Solitaire averages 4.8 from 203K ratings.
Do Calculation Solitaire or Castle Solitaire have ads?
Both Calculation Solitaire and Castle Solitaire show ads.
Which is updated more often, Calculation Solitaire or Castle Solitaire?
Calculation Solitaire ships an update every 12 months, and Castle Solitaire monthly. Most recently, Calculation Solitaire was updated on October 24, 2026 and Castle Solitaire on October 24, 2026.

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