LCM GCD Prime Factor Math vs Memory Palace Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LCM GCD Prime Factor Math
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This application is a mathematical tool that helps to find the LCM (least common multiple) and the GCD (greatest common divisor) of up to 4 numbers. Factorization : integers of up to 7 digits are allowed as input. You can decomposing numbers up to 9999999 into prime factors and find out if a number is prime or not.
Memory Palace Builder
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Create a memory palace with multiple locations. Add the individual stations you have at a location. Compress the images in the app to save storage. When finished, you can scroll through and search all location entries and create and save associations to the images. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Memory Palace Builder at Free against LCM GCD Prime Factor Math's $0.99. Memory Palace Builder also leads on update cadence (every 3 months vs every 18 months). LCM GCD Prime Factor Math's advantage is in-app purchases (none vs 5) and ads (none vs shown). On 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
Memory Palace Builder is free to download; LCM GCD Prime Factor Math costs $0.99 up front. Memory Palace Builder sells 5 in-app purchases, starting at $1.39 per month. LCM GCD Prime Factor Math asks for nothing beyond the download.
LCM GCD Prime Factor Math ships an update every 18 months, Memory Palace Builder every 3 months. The most recent releases landed on October 6, 2026 and September 25, 2026 respectively.
| Parameter | LCM GCD Prime Factor Math | Memory Palace Builder |
|---|---|---|
| Price | $0.99 | Free — better |
| Update frequency | Every 18 months | Every 3 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 5 MB | 120 MB |
| Age rating | 4+ | 4+ |
| Developer | Maria Dolores Garcia Ferre | Marvin Perzi |
In-app purchases
LCM GCD Prime Factor Math
No in-app purchases
Memory Palace Builder
- Premium – 1 Month$1.391 Month
- Premium – 1 Year$14.491 Year
- Just Coffee$0.99
- Pro Version & Coffee$4.99
- Pro Version!$28.49
Questions
Is LCM GCD Prime Factor Math free?
Is Memory Palace Builder free?
Do LCM GCD Prime Factor Math or Memory Palace Builder have ads?
Which is updated more often, LCM GCD Prime Factor Math or Memory Palace Builder?
Other comparisons
