Head-to-head

UUNA TEK iAuto vs iDraw H A3: automatic feeder or A3 art plotter?

Both write and draw with real pens. The iAuto feeds its own paper for bulk letters; the iDraw H A3 is a hand-fed A3 plotter at a fifth of the price.

Updated October 30, 2026

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UUNA TEK

UUNA TEK iAuto

8.0

Best for Businesses sending handwritten letters, cards and envelopes at scale

Check price at UUNA TEK

UUNA TEK Higher score

UUNA TEK iDraw H A3

8.3

Best for Generative art, calligraphy and small batches of handwritten cards

Check price at UUNA TEK

Which should you buy?

Buy the iAuto if you send hundreds of handwritten letters or envelopes a month: the feeder and mail merge save hours. Buy the iDraw H A3 for generative art, calligraphy and occasional card batches, where its motorised pen pressure and $559 price make more sense.

Full comparison

Comparison of UUNA TEK iAuto, UUNA TEK iDraw H A3
Feature	UUNA TEK UUNA TEK iAuto	UUNA TEK UUNA TEK iDraw H A3 Top score
Overall score	8.0	8.3
Speed and output	8.6	8.3
Line quality and build	8.4	8.1
Software and setup	7.4	7.9
Value	7.2	8.8
Price (USD)	$2,799	$559
Best for	Businesses sending handwritten letters, cards and envelopes at scale	Generative art, calligraphy and small batches of handwritten cards
Pros	Automatic feeder: up to 80 letters or 30 envelopes per load Mail merge for personalised letters and envelopes Handwriting in real pen looked convincing in independent testing	A3 drawing area (16.5 × 11.7 in) for $559 Stepper-motor Z-axis with adjustable pen pressure Up to 12,000 mm/min (UUNA TEK figure); 0.01 mm X/Y resolution
Cons	Expensive: $2,799 for the Standard model Complex SVG drawings came out with missing or shifted lines Software has a learning curve; API documentation is thin	Bulky frame for its drawing area Base plate sold separately on the default version Few independent tests; the main hands-on review used a free unit
Specifications
Type	Automatic handwriting machine with paper feeder	—
Capacity	Up to 80 letters or 30 envelopes per load	—
Paper	Up to A3; tested on 80–200 gsm	—
Pens	Up to 18 mm diameter	—
Connectivity	USB, Wi-Fi, HTTP API	USB, Bluetooth; Windows, macOS, Linux
Software	Free iAuto app (Windows x64/Arm, macOS), Font Creator (Windows)	Inkscape, LightBurn, UUNA TEK 2.0 Control; SVG/JPG/PNG
Modes	Table, Simple Note, Character, SVG, Drawing Board	—
Price	Standard $2,799 · Advanced $2,939	$559 without base plate (list $799)
Drawing area	—	A3, 16.5 × 11.7 in (420 × 297 mm)
Speed	—	Up to 12,000 mm/min (manufacturer)
Resolution	—	0.01 mm X/Y
Pen lift	—	Stepper-motor Z-axis with adjustable pressure
Mounting	—	Horizontal or vertical
Laser option	—	0.5–15 W heads (sold separately)
Links	Read review Check price at UUNA TEK	Read review Check price at UUNA TEK