Comparison

Sketch vs Number Brain

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

Head to head
About

Sketch

This app offers a fun and easy-to-use painting experience with a variety of creative tools. Users can paint on their own photos, utilize special brush strokes, and add pre-designed characters. Save and share your artwork directly from the app.

Highlights
  • Multiple brush stroke types
  • Adjustable stroke size and color
  • Add pre-designed characters
  • Paint on personal photos
  • Save and share artwork
  • Print via AirPrint
Features
Read full description

The very funny paint app. PERFECT for kids of all age. Very EASY to use, but with lot of EXITING functions. NEWS : NOW WITH FANTASTIC RAINBOW COLOR Paint with these strokes: --SINGLE --DOUBLE --TRIPLE --SYMMETRICAL --STAR And Select from TINY to BIG SIZE stroke All in combination with: --NORMAL COLORS. Black and White --GRADIENT COLORS From Black to white And....even the ERASER can use the ALL the different stroke --CHARACTERS : You can select these characters(also with different size and colors) MAN (or BOY if you select a smaller size) WOMAN (or GIRL if you select a smaller size) HOUSE CAR SHIP SMILEY FLOWER SPIRAL 2 kind of STARS For characters the color-options can have individuel effect. TRY IT OUT. Sounds crazy? TRY IT BEFORE YOUR FRIENDS. You have ALL THE BUTTONS ON THE SCREEN when you need them. The buttons fly away when you paint, and the buttons will smoothly come back after a while. --Paint on OWN PICTURE --4 colored NEON FRAMES and 4 MAGIC FRAMES. ROTATE and the buttons smoothly rotate, but the painting area do not change. Use the WHOLE SCREEN to paint on. And you can SAVE your painting Print your painting directly via AirPrint. Send the painting via SMS or post it to Facebook or Twitter.

About

Number Brain

Features
Read full description

Can you memorize 20 digits in a row? NumberBrain challenges your memory, focus, and concentration through fast-paced number recall games. HOW IT WORKS A sequence of numbers flashes on screen. Memorize them. Recall them. Beat your best score. Simple concept — endlessly challenging. FEATURES • Classic Mode — memorize number sequences at your own pace • Challenge Mode — race against time for maximum digits recalled • Game Center leaderboards — compete globally • Achievements to unlock • Clean, distraction-free design • Remove Ads with one-time purchase Train your working memory every day. Great for students, professionals, or anyone who wants a sharper mind. Download free. Challenge yourself.

Screenshots

Sketch1 screens
Number Brain4 screens

Verdict

The call

The clearest difference is in-app purchases: Sketch at none against Number Brain's 1. Sketch also leads on iOS requirement (10.0 vs 16.6). Number Brain's advantage is update cadence (every 4 weeks vs every 12 months). On price, ads and 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Number Brain sells 1 one-off in-app purchase. Sketch asks for nothing beyond the download.

UpkeepUpdate frequency

Sketch ships an update every 12 months, Number Brain every 4 weeks. Both last shipped on November 13, 2026.

Scorecard3 real differences · 7 level
Sketch versus Number Brain: the parameters behind the verdict, then further details
ParameterSketchNumber Brain
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews71.4% of reviews—
Number of ratings1 — better—
Update frequencyEvery 12 monthsEvery 4 weeks — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10.0 — better16.6
Further details — not scored
Size26 MB53 MB
Age rating4+4+
DeveloperABCiSoftGerard Grundy

In-app purchases

None

Sketch

No in-app purchases

1 purchases

Number Brain

One-time1
  • Remove Ads$0.99

Questions

Is Sketch free?
Sketch is free to download, with no in-app purchases.
Is Number Brain free?
Number Brain is free to download, with in-app purchases available.
Do Sketch or Number Brain have ads?
Both Sketch and Number Brain show ads.
Which is updated more often, Sketch or Number Brain?
Sketch ships an update every 12 months, and Number Brain every 4 weeks. Most recently, Sketch was updated on November 13, 2026 and Number Brain on November 13, 2026.

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