Comparison

N'Back vs Random Quiz

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

Head to head

N'Back

Free

📚 Education

★ 4.03 ratingsView app →

About

N'Back

Enhance sensory and working memory with this brain training application. It offers various modes to test your ability to recall sequences of numbers, progressing through different 'N' levels.

Highlights

Sensory memory improvement
Working memory enhancement
N'Back exercises
Flash Mode
Slow Mode
Step Mode

Features

Read full description

Improve Sensory Memory & Working Memory using N'Back. ◆Flash Mode / Slow Mode / Step Mode Tap the number key matches the one from N steps earlier in the sequence. In 1'Back 1 task1: count & memorize 2 task2: count & memorize 3 __keyboard__: answer for task1 4 task3: count & memorize 5 __keyboard__: answer for task2 6 task4: count & memorize : In 2'Back 1 task1: count & memorize 2 task2: count & memorize 3 task3: count & memorize 4 __keyboard__: answer for task1 5 task4: count & memorize 6 __keyboard__: answer for task2 7 task5: count & memorize :

About

Random Quiz

Features

Read full description

This app displays math problems at random.

Screenshots

N'Back4 screens

Random Quiz4 screens

Verdict

The call

The clearest difference is in-app purchases: Random Quiz at none against N'Back's 1. Random Quiz also leads on update cadence (every 5 days vs every 9 months). On price, ads, device support and iOS requirement 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. N'Back sells 1 one-off in-app purchase. Random Quiz asks for nothing beyond the download.

UpkeepUpdate frequency

N'Back ships an update every 9 months, Random Quiz every 5 days. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 8 level

N'Back versus Random Quiz: the parameters behind the verdict, then further details
Parameter	N'Back	Random Quiz
Price	Free	Free
Rating	4.0 (3 ratings) — better	—
Positive reviews	70.0% of reviews	—
Number of ratings	3 — better	—
Update frequency	Every 9 months	Every 5 days — better
Ads	Yes	Yes
In-app purchases	Yes	No — better
Monetization	Free with in-app purchases	—
Devices	iPhone	iPhone, iPod — better
Requires iOS	16.0	15.0 — better
Further details — not scored
Size	6 MB	3 MB
Age rating	4+	4+
Developer	Yasuyoshi Ota	Katsuhiko Yao

In-app purchases

1 purchases

N'Back

One-time1

Add Levels (3'Back-10'Back) and Remove Ads$2.99

None

Random Quiz

No in-app purchases

Questions

Is N'Back free?

N'Back is free to download, with in-app purchases available.

Is Random Quiz free?

Random Quiz is free to download, with no in-app purchases.

Do N'Back or Random Quiz have ads?

Both N'Back and Random Quiz show ads.

Which is updated more often, N'Back or Random Quiz?

N'Back ships an update every 9 months, and Random Quiz every 5 days. Most recently, N'Back was updated on October 3, 2026 and Random Quiz on October 6, 2026.