Sketch vs Number Brain
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Multiple brush stroke types
- Adjustable stroke size and color
- Add pre-designed characters
- Paint on personal photos
- Save and share artwork
- Print via AirPrint
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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.
Number Brain
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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
Verdict
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 ads (none vs shown) and update cadence (every 4 weeks vs every 12 months). On price 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
Both are free to download. Number Brain sells 1 one-off in-app purchase. Sketch asks for nothing beyond the download.
Sketch ships an update every 12 months, Number Brain every 4 weeks. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.
| Parameter | Sketch | Number Brain |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 12 months | Every 4 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 26 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | ABCiSoft | Gerard Grundy |
In-app purchases
Sketch
No in-app purchases
Number Brain
- Remove Ads$0.99
Questions
Is Sketch free?
Is Number Brain free?
Do Sketch or Number Brain have ads?
Which is updated more often, Sketch or Number Brain?
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