KBDFans Agar Mini vs NIUNIU Roly poly 40 R3
Choose the Agar Mini for its gasket mount, multiple plate and case materials, and QMK, VIA, and VIAL support; choose the Roly poly if 2.4 GHz connectivity is your priority.
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4.5 · 4 reviews
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Which one should you get?
Get the
KBDFans Agar Mini
QMK
Build quality in the top 5% of 40% boards under $200.
- Gasket mount with aluminum, polycarbonate, and brass case material options.
- Plate choices include aluminum, carbon fiber, FR4, and polycarbonate.
- Supports QMK, VIA, and VIAL.
Get the
NIUNIU Roly poly 40 R3
Build quality in the top 40% of 40% boards under $150.
- Lists Bluetooth, wired, and 2.4 GHz connectivity.
- Hot-swappable with VIAL support.
- The vendor lists mode variants for wired-only, dual-mode, and tri-mode configurations.
Choose the KBDFans Agar Mini if you want a gasket mount, several listed case and plate materials, or QMK and VIA alongside VIAL. Choose the NIUNIU Roly poly 40 R3 if 2.4 GHz connectivity and its listed wired, dual-mode, and tri-mode options matter more. Both offer a hot-swappable 40% ANSI layout, so let those construction and connectivity differences decide.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
KBDFans Agar Mini
NIUNIU Roly poly 40 R3
Connection
Bluetooth, Wired
Bluetooth, 2.4 GHz, Wired
Wireless for several devices and wired for lower latency
Case material
Aluminum, Brass, Polycarbonate
Aluminum
Mount style
Gasket Mount
Top Mount
QMK
Yes
No
The deep option when you want to remap every key
VIA
Yes
No
GUI remapping without compiling firmware
- KBDFans Agar Mini
- NIUNIU Roly poly 40 R3
- Performance
- 6347
- Build quality
- 9474
- Productivity
- 9452
- Customizability
- 9470
- Portability
- 8780
- Layout size: 40%
- Hot-swappable
What will you mostly use it for?
The Agar Mini takes most of the use-case picks, especially where its broader firmware support and material options matter. The Roly poly remains a plausible travel choice for buyers who want a 2.4 GHz option, though its weight and battery capacity are not listed here. Both are compact, hot-swappable 40% ANSI boards, making portability and layout less decisive than construction and connectivity. Consider the Agar Mini's additional listed features against the Roly poly's simpler feature set.
Pick the KBDFans Agar Mini
- The Agar Mini lists a 1000 Hz polling rate; no polling rate is listed for the Roly poly.
- Both keyboards are 40% ANSI boards, while the Roly poly additionally lists 2.4 GHz connectivity.
KBDFans Agar Mini vs NIUNIU Roly poly 40 R3 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 25 specs differ
KBDFans Agar Mini
NIUNIU Roly poly 40 R3
Switch options
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Display
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
VIAL
N-key rollover
Mac & Windows
Released
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KBDFans Agar Mini vs NIUNIU Roly poly 40 R3: your questions
The Agar Mini uses a gasket mount and lists several case and plate material options, plus QMK, VIA, and VIAL support. The Roly poly uses a top mount, lists an FR4 plate, and includes 2.4 GHz among its connectivity options.
The Roly poly 40 R3 lists Bluetooth, 2.4 GHz, and wired connectivity. The Agar Mini lists Bluetooth, wired, and wireless connectivity, but does not specifically identify 2.4 GHz.
The Agar Mini lists QMK, VIA, and VIAL support. The Roly poly lists VIAL support.
Yes, both product listings identify the keyboards as hot-swappable. The Roly poly vendor description also specifies a hot-swappable PCB.
The KBDFans Agar Mini uses a gasket mount. The NIUNIU Roly poly 40 R3 uses a top mount.
The Agar Mini lists aluminum, carbon fiber, FR4, and polycarbonate plate options. The Roly poly listing specifies an FR4 plate.
Yes, both are listed as 40% ANSI keyboards. Each also has a 9° typing angle.
The Agar Mini lists a 1000 Hz polling rate. A polling rate is not listed for the Roly poly 40 R3, so this comparison cannot establish its polling performance.
The Agar Mini listing specifies a 1000 mAh battery and Bluetooth and wired connectivity. It also lists a weight of 700 g.
The vendor says batteries are included for the dual-mode and tri-mode configurations. The wired-only configuration is also listed, without a battery inclusion specified for that option.
The vendor lists an aluminum housing, battery compartment cover, hot-swappable PCB, FR4 plate, and rubber feet. It also lists lithium batteries for dual-mode or tri-mode models and a USB dongle for tri-mode models.
Both are hot-swappable and list VIAL support. The Agar Mini also lists QMK and VIA support, as well as multiple case and plate material options.
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