Überdoodle vs Heat Pad HD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Überdoodle
Relive nostalgic childhood fun with a classic spiral drawing tool. Create intricate patterns with virtual gears and a magic rainbow pen, or simply paint with your finger. Share your creations as wallpapers or send them to loved ones.
- Classic spirograph drawing tool
- Create custom gears and rings
- Multiple drawing modes
- Import photos
- Apple Pencil support
- Draw hypotrochoids and epitrochoids
- Various paper types and background colors
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Thanks for all the amazing feedback - we just love to hear your thoughts, comments and ideas! Überdoodle: Remember the good old spirograph toy? Get nostalgic with this classic spiral drawing tool. Great for children too! The box contains lots of colorful gears, rings and pencils - including a MAGIC rainbow pen - and an unlimited supply of (virtual) paper! Draw beautiful patterns using the gears or simply paint directly on the paper using your finger. Share your doodles to family and friends - or save them and use them as beautiful wallpapers for your iPad, iPhone or iPod Touch. Features: • A Gear Factory where you can create custom gears and rings • Multiple drawing modes: calligraphy pen, celtic braids and multicolor gradients by selecting up to three pencils at the same time • Import photos from your Photo Library • Snap to previous drawing locations • Support for the Apple Pencil. Change calligraphy angle by tilting the pen. • Draw both hypotrochoids and epitrochoids (gears inside a ring or gears on the outside of another gear) • Different paper types and multiple background colors • Eraser and full undo/redo • Change the sizes of gears and rings
Heat Pad HD
Experience a calming simulation of heat-sensitive surfaces that react to your touch. Explore 18 unique visual and interactive environments designed for relaxation and entertainment. Features include soothing music and a pause mode for creative doodling.
- Realistic heat-sensitive surface simulation
- 18 unique surface types
- Relaxing background music
- Pause mode for doodling
- Adjustable inertia settings
- Save creations to Photo Album
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Time to relax ! Enjoy a realistic simulation of various heat-sensitive surfaces reacting to the heat of your fingertips. Simple, yet surprisingly relaxing and entertaining ! 18 kinds of surface available : - Heat : Regular heat-sensitive surface - Flame : Fire at your fingertips - Fantasy : Let the moving patterns hypnotize you... - Sky : Relaxing clouds at your fingertips - Metal : Shiny chrome reflections - Spirit : Bending the Laws of Physics, really hypnotic... - Rainbow: Psychedelic colors - Glow: Radioactive glowing surface - Islands: Create your own archipelago! - Stripes : Mesmerizing black & white interference patterns - Oxygen : Free your mind with fresh air - Inverse : Your fingers are now cold! - Candy : Pink magic at your fingertips - Kids : Colorful fantasy - Purple : UV energy bubbles - Night : Playing with shadows... - Evolve : Ever-changing chromotherapy surface - Gold : Turn sand into pure gold! For best results move your fingers very slowly as the touchscreen needs time to heat ! Featuring: - Relaxing background music - "Pause" mode for easy doodling - Different inertia settings - Save to Photo Album
Screenshots
Verdict
The clearest difference is rating: Überdoodle at 3.8 against Heat Pad HD's 2.7. Überdoodle also leads on review sentiment (78% vs 63%). Heat Pad HD's advantage is price ($0.99 vs $1.99) and iOS requirement (11.0 vs 13.0). On ratings volume, update cadence, ads 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
Überdoodle costs $1.99 and Heat Pad HD $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Überdoodle holds the better App Store score, 3.8 against 2.7. Both are backed by a comparable volume of ratings — 11 and 6 respectively. Written reviews point the same way: 78% of Überdoodle's written reviews are positive against 63% of Heat Pad HD's.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 22, 2026 and October 26, 2026 respectively.
| Parameter | Überdoodle | Heat Pad HD |
|---|---|---|
| Price | $1.99 | $0.99 — better |
| Rating | 3.8 (11 ratings) — better | 2.7 (6 ratings) |
| Positive reviews | 78.0% of reviews — better | 62.7% of reviews |
| Number of ratings | 11 — better | 6 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Morten Bek Ditlevsen | Padadaz |
Customer experience
Überdoodle
Heat Pad HD
In-app purchases
Überdoodle
No in-app purchases
Heat Pad HD
No in-app purchases
Questions
Is Überdoodle free?
Is Heat Pad HD free?
Which has better reviews, Überdoodle or Heat Pad HD?
Do Überdoodle or Heat Pad HD have ads?
Which is updated more often, Überdoodle or Heat Pad HD?
Other comparisons
