Comparison

Mono Lab vs Masters Eye

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Mono Lab

Explore creative image manipulation with a focus on black and white effects. This app offers a wide range of tools for distortion, texture, and structural changes, allowing for unique artistic experimentation.

Highlights
  • 129 black and white filters
  • Sensor-based filters controlled by device movement
  • 12 dimensional surfaces and 13 lenses for 3D distortion
  • Interactive filters responding to touch
  • Raster and vector output options
  • Save directly to Files
Features
Read full description

Mono Lab is designed for exploring the unexpected. Experiment with images in black and white. From subtle relief to structural collapse, topology drift, mesh warps, fracture effects, misregistration, and controlled instability, every tool is built for focused experimentation. Responsive. Direct. Tactile. // Interactive Filters (X) Distortion that responds to you. Shift the image through movement and contact. Tilt to bend structure. Rotate to redirect tension. Touch to anchor, drag to stretch, hold to resist. Each gesture leaves a trace. Each motion reshapes the result. // 3D Surface Mode A dimensional approach to distortion. Map images across 12 surfaces and interpret them through 13 lenses. Adjust depth. Refine spatial tension. Each surface behaves differently. Each lens reshapes the outcome. Monochromatic. Structure, tone, dimension, possibility. What You Can Do • 158 filters for black and white distortion • Touch and motion control transformations • 12 surfaces. 13 lenses • Press, drag, and hold to reshape the image like a surface • Refine light, contrast, and structure • Warp topology and form • Collapse, fracture, and distort • Create raster and vector outputs • Build layered misregistrations • Adjust pressure, grain, and tone • Stack transformations • Save your favorite filters to the Index • Save directly to Files Mono Lab is for designers, artists, photographers, illustrators, and visual experimenters working in black and white.

About

Masters Eye

This reference study app helps artists improve their drawing and painting by simplifying visual information. It offers various study modes to analyze values, proportions, and composition, aiding in better artistic decision-making.

Highlights
  • Purpose-built Study Modes (Values, Squint, Pencil, Notan, Proportions)
  • Import reference photos
  • Fast mode switching for drills
  • Split and compare workflow
  • Save results to Photos library
  • On-device image processing
  • No accounts or ad tracking
Read full description

Masters Eye is a focused reference study app for artists who want to draw and paint with stronger structure, clearer values, and better decision making. One-time purchase. No subscription. Import a reference photo and switch through purpose-built Study Modes to simplify what you see: • Values: Group complex references into readable value masses • Squint: Reduce visual noise to see big relationships faster • Pencil: Translate references into practical tonal steps • Notan: Test light/shadow design and composition clarity • Proportions: Check alignment, spacing, and shape relationships • Original: Instantly compare against the untouched reference Built for deliberate practice, not distraction: • Fast mode switching for targeted observation drills • Split and compare workflow for quick visual checks • Save results to your Photos library when you choose Privacy-first by design: • Image processing happens on-device • No accounts required • No ad tracking Whether you’re studying portraits, still life, or landscapes, Master’s Eye helps you simplify references and make better artistic decisions with confidence.

Screenshots

Mono Lab4 screens
Masters Eye4 screens

Verdict

The call

The clearest difference is in-app purchases: Masters Eye at none against Mono Lab's 4. Masters Eye also leads on update cadence (every 2 days vs every 5 days) and price ($3.99 vs $4.99). Mono Lab's advantage is ratings volume (22 vs 1) and chart position (#5 vs unranked). On rating, ads and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Mono Lab costs $4.99 and Masters Eye $3.99 up front. Mono Lab sells 4 one-off in-app purchases. Masters Eye asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Mono Lab against 5.0 for Masters Eye. That said, the two scores are not equally well evidenced: Mono Lab has 22 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Mono Lab ships an update every 5 days, Masters Eye every 2 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

Scorecard7 real differences · 4 level
Mono Lab versus Masters Eye: the parameters behind the verdict, then further details
ParameterMono LabMasters Eye
Price$4.99$3.99 — better
Rating5.0 (22 ratings)5.0 (1 ratings)
Positive reviews94.4% of reviews—
Number of ratings22 — better1
Update frequencyEvery 5 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
Best chart rank#5 — better—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size57 MB2 MB
Age rating4+4+
DeveloperInner CircleJonathan Brodish

Customer experience

Mono Lab

All ratings21 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews18 reviews
Positive94.4%
Neutral0.0%
Negative5.6%

Masters Eye

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Mono Lab

One-time4
  • Pheno Set$1.99
  • Print Set$1.99
  • ASCII Set$1.99
Show 1 more
  • Dither Set$1.99
None

Masters Eye

No in-app purchases

Questions

Is Mono Lab free?
Mono Lab costs $4.99, and also offers in-app purchases.
Is Masters Eye free?
Masters Eye costs $3.99, with no in-app purchases.
Which has better reviews, Mono Lab or Masters Eye?
Mono Lab and Masters Eye are both rated 5.0 out of 5 on the App Store, from 22 and 1 ratings respectively.
Do Mono Lab or Masters Eye have ads?
Neither Mono Lab nor Masters Eye shows ads.
Which is updated more often, Mono Lab or Masters Eye?
Mono Lab ships an update every 5 days, and Masters Eye every 2 days. Most recently, Mono Lab was updated on October 28, 2026 and Masters Eye on October 25, 2026.

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