Comparison

Force Calculator Magic Trick vs Amalgam by Marc Kerstein

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

Head to head
About

Force Calculator Magic Trick

This app allows you to perform mind-reading magic tricks by forcing any number on a spectator. Create custom routines and impress your audience with seemingly impossible calculations. It's designed for magicians looking to elevate their performances.

Highlights
  • Force any number on spectators
  • Create custom magic routines
  • Safety code for settings
  • Favorite calculator theme
  • Favorite calculator colors
  • Control when force number is revealed
Features
Read full description

◆ Best Force Calculator - Professional Magic Trick App. Force any number at any moment to spectator. This Magic trick app takes mind reading magic to the next level! ▶ Magic Trick Effect: Grab a piece of paper and write a prediction on it and leave this folded paper out in full view. Tell to your spectator we need some random numbers to multiply together. Let's assume spectator typed his year of birth in the calculator. Then multiply on last 2 digits of social security number. Then ask him to divide by random number from 1 to 100. Now you ask spectator hit the equals key and look at the answer to the equation. You open up prediction paper that you wrote before started. And the number on the paper will match the answer on the calculator. ◆ You can do lot of your other amazing predictions with Force Calculator Magic Trick. Use imagination to create your personal routine. Here is no limits to combinations. Futures: ◆ Force any number to spectator ◆ Safety code system to get into settings ◆ Set your favorite calculator theme ◆ Set your favorite calculator colors ◆ Special for Professional magicians: You can set when to show force number to spectator. Just imagine after you start trick you ask spectator to do some simple calculations what he can do in mind. And then when spectator sure all going right and display show correct answers you force your number. Start show magic today with Best Magic Calculator Trick For any questions please visit Official Website : http://illusionsecrets.com

About

Amalgam by Marc Kerstein

This app offers a collection of powerful yet easy-to-use magic effects that can be performed using just your phone. It includes detailed instructions, customization options, and a community section for sharing tips.

Highlights
  • Multiple magic effects in one app
  • Powerful yet easy to perform effects
  • Requires only your phone
  • Includes instructions and customization
  • Community section for tips and routines
  • Offline functionality for most effects
Read full description

Amalgam comprises of multiple effects, all within one app. All effects are chosen to be powerful, yet easy to perform. And each effect requires nothing more than just your phone. Amalgam includes instructions as well as various customisation settings. It even includes a community section for user-submitted tips and routines. AMALGAM INCLUDES: * Streets * Streets is finally back! John Archer has given his exclusive permission for this remake of his popular Streets app, which now incorporates new features including a modernised real map and a new "gyro crib". - Divine where in the world your spectator is thinking of! - A book test with no memory work required. - A new "legitimate mode" which supports all languages. * TimedOut * A customisable prediction effect that's all in your spectator's hands. Predict a number, dice roll, ESP symbol, star sign or more. - Prediction can be an image in your Photos or perhaps a drawing. - After making your prediction, you do not touch the phone again. - No Internet or Bluetooth required: nothing is sent to or from the device. - Your spectator checks the prediction themselves: the phone remains in their hands! - No voice recognition! - Perfect for pairing with other electronic mentalism effects: reveal a photo from two days ago of you predicting their dice roll, which even they don't know yet! * Watch * A revelation of a freely chosen time. Your spectator zooms in to a wristwatch in a photograph to find it's set to the time they just named. - Customisable: use your own photo. - Any time can be named to the minute. - Novel method: no voice recognition or unjustified inputs. * Word Search * Seemingly demonstrate superhuman memory abilities with this word search game from Harry De Cruz. Although you only look at the word search for a couple of seconds, you can reveal the positions and directions of all words hiding within. - Method keeps memory work to a minimum: if you know the alphabet, you can perform this effect. - No need to secretly obtain information during the effect. - Phone remains in the spectator's hands. * Inertia * Force text, photos and videos on any website, without hiding the screen from the spectator. Inertia works great as a prediction effect, or combined with your favourite revelation. - Predict a word on any website. - Force photos or videos on Instagram. - Reveal you predicted a selected Tweet, movie or Instagram post. * OneStopShop * This fully customisable effect allows you to force a product of your choosing from an online store. - Novel input method combining old and new mechanics. - Multiple built-in presets, or create your own. - Force multiple playing card back designs, thanks to Theory11, Daniel Madison and Patrick Kun. - Built-in clothing preset is perfect to combine with physical effects, such as Dresscode by Calen Morelli. * ChoiceMail * Your spectator's selection is impossibly revealed when listening to a received audio message. - Input mechanism allows you to secretly code the reveal in performance. - Novel input peek system is hidden in plain sight. - HUGE thanks go to AGT winner Shin Lim, who has recorded the built-in presets! - Also fully customisable with custom presets. * Amped * Using a combination of screenshots, Amped lets you demonstrate your apparent superhuman powers over technology. - Included settings allow for multiple customisation options. - Ends clean - device can be fully inspected at the end of the performance. - Combine with a Charge Card (sold separately) for a physical effect. MORE INFO: Each effect in Amalgam includes detailed in-app instructions and settings. The included effects are for entertainment purposes only, designed for professional performers. This app does not provide true mind reading abilities or anything similar. Please get in touch to discuss TV or video performance rights.

Screenshots

Force Calculator Magic Trick2 screens
Amalgam by Marc Kerstein4 screens

Verdict

The call

The clearest difference is rating: Amalgam by Marc Kerstein at 4.7 against Force Calculator Magic Trick's 3.4. Amalgam by Marc Kerstein also leads on update cadence (every 4 days vs every 9 months) and review sentiment (93% vs 67%). Force Calculator Magic Trick's advantage is iOS requirement (9.3 vs 14.1). On price, ratings volume, in-app purchases 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. Force Calculator Magic Trick sells 1 one-off in-app purchase and Amalgam by Marc Kerstein sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Amalgam by Marc Kerstein holds the better App Store score, 4.7 against 3.4. Both are backed by a comparable volume of ratings — 24 and 48 respectively. Written reviews point the same way: 67% of Force Calculator Magic Trick's written reviews are positive against 93% of Amalgam by Marc Kerstein's.

UpkeepUpdate frequency

Force Calculator Magic Trick ships an update every 9 months, Amalgam by Marc Kerstein every 4 days. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

Scorecard5 real differences · 5 level
Force Calculator Magic Trick versus Amalgam by Marc Kerstein: the parameters behind the verdict, then further details
ParameterForce Calculator Magic TrickAmalgam by Marc Kerstein
PriceFreeFree
Rating3.4 (24 ratings)4.7 (48 ratings) — better
Positive reviews66.7% of reviews93.3% of reviews — better
Number of ratings2448 — better
Update frequencyEvery 9 monthsEvery 4 days — better
Ads—No
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS9.3 — better14.1
Further details — not scored
Size23 MB38 MB
Age rating4+17+
DeveloperPetro GuridoMarc Kerstein

Customer experience

Force Calculator Magic Trick

All ratings24 ratings
Positive58.3%
Neutral8.3%
Negative33.3%
Written reviews9 reviews
Positive66.7%
Neutral11.1%
Negative22.2%

Amalgam by Marc Kerstein

All ratings48 ratings
Positive93.8%
Neutral0.0%
Negative6.3%
Written reviews15 reviews
Positive93.3%
Neutral0.0%
Negative6.7%

In-app purchases

1 purchases

Force Calculator Magic Trick

One-time1
  • Pro Version$4.99
10 purchases

Amalgam by Marc Kerstein

One-time10
  • TimedOutFree
  • Amped$14.99
  • Watch$24.99
Show 7 more
  • Word Search$24.99
  • OneStopShop$29.99
  • ChoiceMail$29.99
  • Streets$33.99
  • Inertia$37.99
  • Season One$69.99
  • Season Two$84.99

Questions

Is Force Calculator Magic Trick free?
Force Calculator Magic Trick is free to download, with in-app purchases available.
Is Amalgam by Marc Kerstein free?
Amalgam by Marc Kerstein is free to download, with in-app purchases available.
Which has better reviews, Force Calculator Magic Trick or Amalgam by Marc Kerstein?
Amalgam by Marc Kerstein is rated higher. Force Calculator Magic Trick averages 3.4 out of 5 from 24 ratings, while Amalgam by Marc Kerstein averages 4.7 from 48 ratings.
Which is updated more often, Force Calculator Magic Trick or Amalgam by Marc Kerstein?
Force Calculator Magic Trick ships an update every 9 months, and Amalgam by Marc Kerstein every 4 days. Most recently, Force Calculator Magic Trick was updated on November 1, 2026 and Amalgam by Marc Kerstein on November 7, 2026.

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