Comparison

Memory Nature Explorer vs 21 Saga

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

Head to head
About

Memory Nature Explorer

Engage your memory with a direction-based matching game. Test your ability to recall sequences and identify patterns in various challenges. Suitable for players looking to sharpen their cognitive skills.

Highlights
  • Direction Count game
  • Number identification game
  • Direction identification game
  • Memory matching challenges
  • Cognitive skill enhancement
Features
Read full description

This is a game of Direction Identify match.The functions are: Game1:direction Count Game2:Number Direction 3:identify

About

21 Saga

A relaxing card game that combines classic solitaire mechanics with gentle brain training. Easily combine cards to reach 21, improving memory, reaction, and math skills without timers or complex rules. Enjoy a clean interface and progress through levels at your own pace, anytime, anywhere.

Highlights
  • Simple rules, learn in 1 minute
  • Oversized text and clean interface
  • Trains memory, reaction, and math skills
  • Gradual difficulty progression
  • Offline play, no Wi-Fi needed
  • No timers or rush
Read full description

21 Saga Your cozy companion for fun and gentle brain training—turn classic card game into a relaxing, worry-free pastime! Simple Rules: Learn in 1 Minute Pick cards and combine them to make exactly 21—then they clear! No complicated steps, just like "stacking blocks" with cards. Even if you’re new to card games, you’ll get the hang of it right away. Big, Clear & Easy to Use Oversized text: Card numbers are bigger than regular playing cards—no squinting. Clean interface: No messy pop-ups or distractions. Just a calm, clutter-free screen so you can focus on playing comfortably. Thick, easy-tap buttons. Every Round is a Gentle Brain Workout Matching cards to 21 quietly trains your memory, reaction, and basic math skills—like a light "massage" for your brain! Keep playing, and you’ll notice small improvements: remembering things better, reacting faster, even calculating grocery bills more easily. Levels That Feel Like "Gentle Steps" Start with easy "warm-up" levels, then move to slightly trickier ones—no sudden hard jumps! Every level you beat feels like earning a little "medal"—you’ll build confidence slowly and feel proud of your progress. Play Anytime, Anywhere (No Wi-Fi Needed!) No rush, no timers: Sit on the couch, wait for the bus, or relax after meals—play as long as you want, at your own pace. Fun for the whole family! You pick cards, they give tips—turn the game into a nice chat and bonding moment. A perfect mix of fun and brain exercise made just for you. Grab your "virtual cards" and start your relaxing game now!

Screenshots

Memory Nature Explorer4 screens
21 Saga4 screens

Verdict

The call

The clearest difference is ads: Memory Nature Explorer at none against 21 Saga's shown. Memory Nature Explorer also leads on monetization model (free vs ad-supported). 21 Saga's advantage is update cadence (weekly vs monthly). On price, rating, ratings volume and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Memory Nature Explorer against 5.0 for 21 Saga. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

UpkeepUpdate frequency

Memory Nature Explorer ships an update monthly, 21 Saga weekly. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
Memory Nature Explorer versus 21 Saga: the parameters behind the verdict, then further details
ParameterMemory Nature Explorer21 Saga
PriceFreeFree
Rating5.0 (2 ratings)5.0 (4 ratings)
Positive reviews—100.0% of reviews
Number of ratings24 — better
Update frequencyMonthlyWeekly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.615.6
Further details — not scored
Size39 MB174 MB
Age rating17+12+
DeveloperSOUTHWEST WISCONSIN WORKFORCE DEVELOPMENT BOARD, INC.XCELLENT CONTENT MEDIA GROUP CORPORATION

Customer experience

Memory Nature Explorer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

21 Saga

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Memory Nature Explorer

No in-app purchases

None

21 Saga

No in-app purchases

Questions

Is Memory Nature Explorer free?
Memory Nature Explorer is free to download, with no in-app purchases.
Is 21 Saga free?
21 Saga is free to download, with no in-app purchases.
Which has better reviews, Memory Nature Explorer or 21 Saga?
Memory Nature Explorer and 21 Saga are both rated 5.0 out of 5 on the App Store, from 2 and 4 ratings respectively.
Do Memory Nature Explorer or 21 Saga have ads?
21 Saga shows ads; Memory Nature Explorer does not.
Which is updated more often, Memory Nature Explorer or 21 Saga?
Memory Nature Explorer ships an update monthly, and 21 Saga weekly. Most recently, Memory Nature Explorer was updated on October 24, 2026 and 21 Saga on October 24, 2026.

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