Comparison

Simplex Nodal vs Memory Games ・ Brain Training

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

Head to head
About

Simplex Nodal

Explore electricity markets by building and solving your own models. This app visually demonstrates complex concepts like locational marginal pricing, line losses, and the simplex algorithm. Learn through interactive examples and detailed step-by-step operations.

Highlights
  • Build and solve electricity market models
  • Visualize simplex algorithm workings
  • Explore locational marginal pricing
  • Understand line losses and binding constraints
  • Step-by-step simplex iteration details
  • Export simplex tableaux as CSV
  • Includes sample market models
Read full description

In conjunction with the tutorial document, available at www.simplexnodal.com, use the app to learn about electricity markets by graphically building and solving your own electricity market models. The tutorial also describes the simplex algorithm that solves the model and the app lets you see the internal workings of the algorithm. Demonstrates nodal electricity markets features such as: locational marginal pricing, line losses, parallel flows, binding constraints, price separation, the spring washer effect, negative prices, risk and reserves, ramp-rates, congestion charges, transmission rentals, multiple electrical islands, HVDC branches, HVDC risk, HVDC risk subtractor, HVDC reserve sharing, and more. See www.simplexnodal.com for more screenshots and the tutorial document. Highlights: • The tutorial explains nodal electricity markets and the simplex algorithm via worked examples using the app • Start with small models to learn the basic concepts of the electricity market model the simplex algorithm • Learn how to explain prices by relaxing constraints to determine shadow prices • Enable/disable electricity market features to focus on individual effects, e.g., risk and reserve is easier to explain with line losses disabled • View full details of the simplex modelling including basic and non-basic variables, constraints, shadow prices, and details of the simplex iterations • Learn how the simplex algorithm works by viewing the step by step simplex operations that solve the electricity market model. View iteration details in the app and/or export the simplex tableaux as a csv file • The app implements its own simplex algorithm but you can also export the model in GAMS format to solve externally if you have access to the GAMS solver • Includes sample models that represent sections of an actual electricity market iPhone and iPad functionality is the same. Zoom and scroll allow the iPhone to access iPad sized models.

About

Memory Games ・ Brain Training

Features
Read full description

Meet Memory Games: Brain Training — the ultimate mobile app to boost your mental prowess and have fun while doing it! With a variety of engaging and user-friendly games, this app is designed to enhance your memory, focus, logic, and overall brain performance. Look, what’s inside: • Memory Mirror: where you'll need to remember the location of objects and match them correctly. • Math Enigma: challenges you with a range of math problems that will keep your brain sharp and agile. • Color Match: invites you to a vibrant world of colors where you’ll have lots of fun by matching them. • Attention: tests your focus and attention by asking you to find the shape that doesn't quite fit with the others. But the benefits of brain training games go beyond entertainment. Research has shown that regular mental exercise through brain games can have a positive impact on mental health. By engaging in these games, you can: • Stimulate mental activity • Improve focus and attention • Keep your brain sharp • Enhance logic and cognitive functions • A great way to pass the time • A fun and stimulating experience for people of all ages! So, whether you're looking to challenge yourself, boost your brainpower, or simply enjoy some addictive gameplay, Memory Games: Brain Training is your perfect companion. Download now and embark on an exciting journey to unlock your full mental potential! Privacy Policy: https://brain-training.app/pp Terms of Use: https://brain-training.app/tou Support: support@brain-training.app

Screenshots

Simplex Nodal4 screens
Memory Games ・ Brain Training4 screens

Verdict

The call

The clearest difference is in-app purchases: Simplex Nodal at none against Memory Games ・ Brain Training's 2. Simplex Nodal also leads on device support (4 vs 2) and iOS requirement (9.0 vs 12.0). Memory Games ・ Brain Training's advantage is update cadence (monthly vs every 4 months). On price and ads 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. Memory Games ・ Brain Training sells 2 in-app purchases, starting at $3.99 per 7 days. Simplex Nodal asks for nothing beyond the download.

UpkeepUpdate frequency

Simplex Nodal ships an update every 4 months, Memory Games ・ Brain Training monthly. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 4 level
Simplex Nodal versus Memory Games ・ Brain Training: the parameters behind the verdict, then further details
ParameterSimplex NodalMemory Games ・ Brain Training
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPod
Requires iOS9.0 — better12.0
Further details — not scored
Size14 MB215 MB
Age rating4+4+
DeveloperSimplex Nodal LimitedConlan Limited

In-app purchases

None

Simplex Nodal

No in-app purchases

2 purchases

Memory Games ・ Brain Training

Subscriptions2
  • Memory Games - 1 Week3 Days trial$3.997 Days
  • Memory Games - 1 Year$39.991 Year

Questions

Is Simplex Nodal free?
Simplex Nodal is free to download, with no in-app purchases.
Is Memory Games ・ Brain Training free?
Memory Games ・ Brain Training is free to download, with in-app purchases available.
Do Simplex Nodal or Memory Games ・ Brain Training have ads?
Neither Simplex Nodal nor Memory Games ・ Brain Training shows ads.
Which is updated more often, Simplex Nodal or Memory Games ・ Brain Training?
Simplex Nodal ships an update every 4 months, and Memory Games ・ Brain Training monthly. Most recently, Simplex Nodal was updated on November 1, 2026 and Memory Games ・ Brain Training on October 25, 2026.

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