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  1. Home
  2. Mattress
  3. Compare

Purple Mattress vs Novaform ComfortGrande Plus

Which Mattress Is Better?

    Top
    Main Differences
    Design
      Style
    Performance
      FirmnessBody ConformitySupportBouncinessComfort Layers EnvelopmentResponsivenessMotion IsolationEdge SupportCooling
    Components
      CoverEdge ConstructionFoam Layer MaterialFoam Layer Mass DensityFoam Layer ThicknessSpring Layer DimensionsFoam Layer FirmnessSpring Layer FirmnessFoam Layer ResilienceSpring Layer Bounciness
    Comments

Products

Purple Mattress
Novaform ComfortGrande Plus

Tested using Methodology v1.2

Updated Aug 10, 2026 05:54 PM

SEE PRICE
Amazon

Tested using Methodology v1.2

Updated Sep 03, 2026 12:50 PM

SEE PRICE
Novaform
Purple Mattress Picture

Track

Novaform ComfortGrande Plus Picture

Track

Mattress Type
Foam
Bed-In-A-Box
Yes
Upper Comfort Foam @ LumbarElastic Polymer Grid
Firmness Level
Medium-Firm (51 Pa/mm)
Mattress Type
Foam
Bed-In-A-Box
Yes
Upper Comfort Foam @ LumbarMemory Foam
Firmness Level
Medium-Firm (52 Pa/mm)
  1. Recommended in 2 articles:
  2. Cooling
  3. Medium Firm
  1. Recommended in 3 articles:
  2. Memory Foam
  3. Affordable
  4. Medium Firm

Our Verdict

Purple Mattress

Novaform ComfortGrande Plus

You might prefer either the Purple Mattress or the Novaform ComfortGrande Plus. Both are Medium-Firm and best suited for light and average-weight back and stomach sleepers. The Novaform uses memory foam, so it contours but moves slowly. It offers better motion isolation, making it much better for sleeping with a partner. The Purple is very responsive, so you never feel stuck in place. It stands out for its fantastic cooling and is a much better option for hot sleepers.

GIFT THIS COMPARISON

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Variants

  • Mattress (California King)
  • Mattress (Full)
  • ComfortGrande Plus (Queen)

Review

See Purple Mattress Review
See Novaform ComfortGrande Plus Review
2 
0 

Check Price

California King
Mattress
SEE PRICE
Amazon
 
Full
Mattress
SEE PRICE
Amazon
 
King
Mattress
SEE PRICE
Amazon
 
Queen
Mattress
SEE PRICE
Purple
Queen
ComfortGrande Plus
SEE PRICE
Novaform
Twin
Mattress
SEE PRICE
Amazon
 
Twin XL
Mattress
SEE PRICE
Amazon
 

Main Differences for
Side Sleeping

Threshold 

0.10

Side Sleeping 
 

6.3
6.9
No major differences between these mattresses for side sleeping. See full list of tests below.

Full Comparison

Design

Style 
 

Style Picture 
 

Compare High-Res
Purple Mattress Style Picture
Compare High-Res
Novaform ComfortGrande Plus Style Picture

Mattress Type 
 

Foam
Foam

Bed-In-A-Box 
 

Yes
Yes

Quilted Top Layer 
 

No
No

Grab Handles 
 

No
Yes

Thickness  

23.4 cm (9.2")
34.9 cm (13.7")
Performance

Firmness 
 

Head/Feet Firmness  

 Preview Graph
Purple Mattress Head/Feet Firmness
 Preview Graph
Novaform ComfortGrande Plus Head/Feet Firmness
 Compare in Graph Tool

Lumbar Firmness  

 Preview Graph
Purple Mattress Lumbar Firmness
 Preview Graph
Novaform ComfortGrande Plus Lumbar Firmness
 Compare in Graph Tool

Firmness Video  

Normalized Stiffness @ Head/Feet 
 

46 Pa/mm
52 Pa/mm

Normalized Stiffness @ Lumbar 
 

51 Pa/mm
52 Pa/mm

Firmness Level 
 

Medium-Firm (51 Pa/mm)
Medium-Firm (52 Pa/mm)

Body Conformity 
 

6.2
6.8

Shoulder Indentation vs. Body Weight  

 Preview Graph
Purple Mattress Shoulder Indentation vs. Body Weight
 Preview Graph
Novaform ComfortGrande Plus Shoulder Indentation vs. Body Weight
 Compare in Graph Tool

Body Conformity Picture 1  

Body Conformity Picture 2  

Indent @ 50 kg (110 lb) 
 

27 mm (1.1")
40 mm (1.6")

Indent @ 80 kg (176 lb) 
 

59 mm (2.3")
60 mm (2.4")

Indent @ 110 kg (242 lb) 
 

80 mm (3.2")
75 mm (3.0")

Support 
 

6.6
7.3

Pelvis Indentation vs. Body Weight  

 Preview Graph
Purple Mattress Pelvis Indentation vs. Body Weight
 Preview Graph
Novaform ComfortGrande Plus Pelvis Indentation vs. Body Weight
 Compare in Graph Tool

Indent Difference @ 50 kg (110 lb) 
 

10 mm (0.4")
16 mm (0.6")

Indent Difference @ 80 kg (176 lb) 
 

31 mm (1.2")
21 mm (0.8")

Indent Difference @ 110 kg (242 lb) 
 

31 mm (1.2")
21 mm (0.8")

Bounciness 
 

7.1
4.2

Bounciness Video  

Maximum Rebound Height 
 

13.5 cm (5.3")
4.0 cm (1.6")

Comfort Layers Envelopment 
 

6.8
7.3

Sinking & Contouring Picture 
 

Compare High-Res
Purple Mattress Sinking & Contouring Picture
Compare High-Res
Novaform ComfortGrande Plus Sinking & Contouring Picture

Sinking Depth 
 

3.5 cm (1.4")
4.8 cm (1.9")

Diameter Of Distortion 
 

22.7 cm (8.9")
28.3 cm (11.1")

Responsiveness 
 

9.8
6.9

Responsiveness Video  

Response Time 
 

0.2 s
1.4 s

Motion Isolation 
 

7.7
9.2

Motion Isolation Video  

Head/Feet Motion Isolation  

 Preview Graph
Purple Mattress Head/Feet Motion Isolation
 Preview Graph
Novaform ComfortGrande Plus Head/Feet Motion Isolation
 Compare in Graph Tool

Lumbar Motion Isolation  

 Preview Graph
Purple Mattress Lumbar Motion Isolation
 Preview Graph
Novaform ComfortGrande Plus Lumbar Motion Isolation
 Compare in Graph Tool

Peak Acceleration @ Head/Feet 
 

0.84 g
0.58 g

Dissipation Time @ Head/Feet 
 

0.51 s
0.25 s

Peak Acceleration @ Lumbar 
 

4.05 g
1.97 g

Dissipation Time @ Lumbar 
 

0.42 s
0.23 s

Edge Support 
 

7.3
7.4

Naturalistic Loading Pad Video  

Naturalistic Loading Pad  

 Preview Graph
Purple Mattress Naturalistic Loading Pad
 Preview Graph
Novaform ComfortGrande Plus Naturalistic Loading Pad
 Compare in Graph Tool

Small Platen  

 Preview Graph
Purple Mattress Small Platen
 Preview Graph
Novaform ComfortGrande Plus Small Platen
 Compare in Graph Tool

Naturalistic Loading Pad Indentation 
 

133 mm
139 mm

Small Platen Indentation @ 0 mm From Edge 
 

168 mm
157 mm

Small Platen Indentation @ 150 mm From Edge 
 

135 mm
129 mm

Increased Indentation @ Mattress Edge 
 

33 mm
29 mm

Cooling 
 

9.7
7.7

Cooling Graph  

 Preview Graph
Purple Mattress Cooling Graph
 Preview Graph
Novaform ComfortGrande Plus Cooling Graph
 Compare in Graph Tool

Energy Transferred Over 1st Hour 
 

109 kJ
64 kJ

Energy Transferred Over 8 Hours 
 

218 kJ
157 kJ
Components

Cover 
 

Cover Picture 
 

Compare High-Res
Purple Mattress Cover Picture
Compare High-Res
Novaform ComfortGrande Plus Cover Picture

Sleeping Surface Material 
 

Polyester, Spandex
Polyester, Nylon, Polyethylene, Spandex

Removable 
 

Yes
No

Machine Washable 
 

No
No

Edge Construction 
 

Edge Support Picture 
 

Compare High-Res
Purple Mattress Edge Support Picture
Compare High-Res
Novaform ComfortGrande Plus Edge Support Picture

Edge Component 
 

Polyfoam
None

Foam Layer Material 
 

Foam Layer Material Picture 
 

Compare High-Res
Purple Mattress Foam Layer Material Picture
Compare High-Res
Novaform ComfortGrande Plus Foam Layer Material Picture

Quilted Top Fill  

N/A
N/A

Upper Comfort Foam @ Head/Feet  

Elastic Polymer Grid
Memory Foam

Upper Comfort Foam @ Lumbar  

Elastic Polymer Grid
Memory Foam

Lower Comfort Foam @ Head/Feet  

N/A
N/A

Lower Comfort Foam @ Lumbar  

N/A
N/A

Transition Foam  

Polyfoam
Polyfoam

Support Foam  

Polyfoam
Polyfoam

Foam Layer Mass Density 
 

7.1
6.9

Quilted Top Fill  

N/A
N/A

Quilted Top Fill Foam Density vs. Reference 
 

N/A
N/A

Upper Comfort Foam @ Head/Feet  

744 kg/m³ (46.4 lb/cu.ft.)
50 kg/m³ (3.1 lb/cu.ft.)

Upper Comfort Foam @ Head/Feet Density vs. Reference 
 

2.3
0.8

Upper Comfort Foam @ Lumbar  

744 kg/m³ (46.4 lb/cu.ft.)
50 kg/m³ (3.1 lb/cu.ft.)

Upper Comfort Foam @ Lumbar Density vs. Reference 
 

2.3
0.8

Lower Comfort Foam @ Head/Feet  

N/A
N/A

Lower Comfort Foam @ Head/Feet Density vs. Reference 
 

N/A
N/A

Lower Comfort Foam @ Lumbar  

N/A
N/A

Lower Comfort Foam @ Lumbar Density vs. Reference 
 

N/A
N/A

Transition Foam  

27 kg/m³ (1.7 lb/cu.ft.)
36 kg/m³ (2.3 lb/cu.ft.)

Transition Foam Density vs. Reference 
 

0.8
1.4

Support Foam  

32 kg/m³ (2.0 lb/cu.ft.)
28 kg/m³ (1.8 lb/cu.ft.)

Support Foam Density vs Reference 
 

1.1
0.9

Foam Layer Thickness 
 

Foam Layer Thickness Picture 
 

Compare High-Res
Purple Mattress Foam Layer Thickness Picture
Compare High-Res
Novaform ComfortGrande Plus Foam Layer Thickness Picture

Quilted Top 
 

N/A
N/A

Upper Comfort Foam @ Head/Feet  

5.1 cm (2.0")
7.5 cm (3.0")

Upper Comfort Foam @ Lumbar  

5.1 cm (2.0")
7.5 cm (3.0")

Lower Comfort Foam @ Head/Feet  

N/A
N/A

Lower Comfort Foam @ Lumbar  

N/A
N/A

Transition Foam  

8.4 cm (3.3")
7.0 cm (2.8")

Support Foam  

10.1 cm (4.0")
21.0 cm (8.3")

Spring Layer Dimensions 
 

Spring Layer Height Picture 
 

Compare High-Res
Purple Mattress Spring Layer Height Picture
Compare High-Res
Novaform ComfortGrande Plus Spring Layer Height Picture

Spring Layer Density Picture 
 

Compare High-Res
Purple Mattress Spring Layer Density Picture
Compare High-Res
Novaform ComfortGrande Plus Spring Layer Density Picture

Comfort Layer Height 
 

N/A
N/A

Comfort Layer Coil Density 
 

N/A
N/A

Comfort Layer Coil Gauge 
 

N/A
N/A

Support Layer Height 
 

N/A
N/A

Support Layer Coil Density 
 

N/A
N/A

Support Layer Coil Gauge @ Head/Feet 
 

N/A
N/A

Support Layer Coil Gauge @ Lumbar 
 

N/A
N/A

Foam Layer Firmness 
 

Comfort Layer IPD  

 Preview Graph
Purple Mattress Comfort Layer IPD
 Preview Graph
Novaform ComfortGrande Plus Comfort Layer IPD
 Compare in Graph Tool

Transition & Support Layer IPD  

 Preview Graph
Purple Mattress Transition & Support Layer IPD
 Preview Graph
Novaform ComfortGrande Plus Transition & Support Layer IPD
 Compare in Graph Tool

Quilted Top Fill 25% IPD 
 

N/A
N/A

Upper Comfort Foam @ Head/Feet 25% IPD 
 

2.7 kPa
2.0 kPa

Upper Comfort Foam @ Lumbar 25% IPD 
 

2.7 kPa
2.0 kPa

Lower Comfort Foam @ Head/Feet 25% IPD 
 

N/A
N/A

Lower Comfort Foam @ Lumbar 25% IPD 
 

N/A
N/A

Transition Foam 25% IPD 
 

2.4 kPa
3.0 kPa

Support Foam 25% IPD 
 

4.1 kPa
4.1 kPa

Spring Layer Firmness 
 

Comfort Layer Firmness  

Purple Mattress Comfort Layer Firmness
Novaform ComfortGrande Plus Comfort Layer Firmness
 Compare in Graph Tool

Support Layer Firmness  

Purple Mattress Support Layer Firmness
Novaform ComfortGrande Plus Support Layer Firmness
 Compare in Graph Tool

Spring Layer Firmness  

Normalized Comfort Layer Stiffness @ Head/Feet 
 

N/A
N/A

Normalized Comfort Layer Stiffness @ Lumbar 
 

N/A
N/A

Normalized Support Layer Stiffness @ Head/Feet 
 

N/A
N/A

Normalized Support Layer Stiffness @ Lumbar 
 

N/A
N/A

Foam Layer Resilience 
 

Foam Layer Resilience Video  

Quilted Top Fill  

N/A
N/A

Upper Comfort Foam @ Head/Feet  

N/A
4%

Upper Comfort Foam @ Lumbar  

N/A
4%

Lower Comfort Foam @ Head/Feet  

N/A
N/A

Lower Comfort Foam @ Lumbar  

N/A
N/A

Transition Foam  

49%
40%

Support Foam  

43%
43%

Spring Layer Bounciness 
 

Comfort Spring Layer Bounciness Video  

Support Spring Layer Bounciness Video  

Comfort Spring Layer Maximum Rebound Height 
 

N/A
N/A

Support Spring Layer Maximum Rebound Height 
 

N/A
N/A

Check Price

California King
Mattress
SEE PRICE
Amazon
 
Full
Mattress
SEE PRICE
Amazon
 
King
Mattress
SEE PRICE
Amazon
 
Queen
Mattress
SEE PRICE
Purple
Queen
ComfortGrande Plus
SEE PRICE
Novaform
Twin
Mattress
SEE PRICE
Amazon
 
Twin XL
Mattress
SEE PRICE
Amazon
 
Back to Top

Purple Mattress

Novaform ComfortGrande Plus

Comments

  1. Comparison
 • Posted 1 year ago

Purple Mattress vs Novaform ComfortGrande Plus: Main Discussion

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