Comparison

Memory Palace Builder vs Mental Math Interview Trainer

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

Head to head
About

Memory Palace Builder

Features
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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/

About

Mental Math Interview Trainer

Features
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Mental Math helps you build fast, reliable mental calculation skills through short, focused practice sessions. Whether you are preparing for consulting interviews (McKinsey, BCG, Bain), finance or tech case interviews, or any role that tests quantitative reasoning, this app gives you a simple way to drill the exact skills you need: quick multiplication, percentages, division, and growth calculations. Practice in three modes: โ€ข Speed: solve as many problems as you can before the clock runs out โ€ข Accuracy: answer a fixed set of questions and aim for precision โ€ข Custom: pick specific categories and set your own time limit Adjust difficulty from Easy to Hard and fine-tune the tolerance margin so drills match your current level. Your results are saved locally on your device so you can track progress across sessions and spot improvement over time. Features: โ€ข Short daily mental math drills designed for interview prep โ€ข Speed, Accuracy, and Custom practice modes โ€ข Multiplication, percentage, division, and growth exercises โ€ข Adjustable difficulty and tolerance controls โ€ข Session summaries and long-term performance stats โ€ข Lightweight, distraction-free design โ€ข Available in English, French, and Spanish Perfect for consulting interview prep, case interview math, finance interviews, product management interviews, or anyone looking to sharpen their everyday arithmetic.

Screenshots

Memory Palace Builder4 screens
Mental Math Interview Trainer4 screens

Verdict

The call

The clearest difference is in-app purchases: Mental Math Interview Trainer at none against Memory Palace Builder's 5. Mental Math Interview Trainer also leads on update cadence (every 2 days vs every 3 months). Memory Palace Builder's advantage is iOS requirement (16.0 vs 26.4). On price, ads and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Memory Palace Builder sells 5 in-app purchases, starting at $1.39 per month. Mental Math Interview Trainer asks for nothing beyond the download.

UpkeepUpdate frequency

Memory Palace Builder ships an update every 3 months, Mental Math Interview Trainer every 2 days. The most recent releases landed on October 11, 2026 and October 19, 2026 respectively.

Scorecard3 real differences ยท 3 level
Memory Palace Builder versus Mental Math Interview Trainer: the parameters behind the verdict, then further details
ParameterMemory Palace BuilderMental Math Interview Trainer
PriceFreeFree
Update frequencyEvery 3 monthsEvery 2 days โ€” better
AdsYesYes
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 โ€” better26.4
Further details โ€” not scored
Size120 MB7 MB
Age rating4+4+
DeveloperMarvin PerziLudovic Lepic

In-app purchases

5 purchases

Memory Palace Builder

Subscriptions2
  • Premium โ€“ 1 Month$1.391 Month
  • Premium โ€“ 1 Year$14.491 Year
One-time3
  • Just Coffee$0.99
  • Pro Version & Coffee$4.99
  • Pro Version!$28.49
None

Mental Math Interview Trainer

No in-app purchases

Questions

Is Memory Palace Builder free?
Memory Palace Builder is free to download, with in-app purchases available.
Is Mental Math Interview Trainer free?
Mental Math Interview Trainer is free to download, with no in-app purchases.
Do Memory Palace Builder or Mental Math Interview Trainer have ads?
Both Memory Palace Builder and Mental Math Interview Trainer show ads.
Which is updated more often, Memory Palace Builder or Mental Math Interview Trainer?
Memory Palace Builder ships an update every 3 months, and Mental Math Interview Trainer every 2 days. Most recently, Memory Palace Builder was updated on October 11, 2026 and Mental Math Interview Trainer on October 19, 2026.

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