Comparison

Spectro by Variable vs KarmaBuilder

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

Head to head
About

Spectro by Variable

This app enables color professionals to precisely measure, match, and communicate color data using connected devices. Access extensive color libraries and analyze spectral curves for accurate results anytime, anywhere.

Highlights
  • Scan, match, and compare colors
  • View spectral curves and LAB values
  • Access extensive brand color libraries
  • Analyze colors under multiple light sources
  • Store and export scan data
  • Create and store color standards
Features
Read full description

Now Available: Spectro by Variable + Pantone® Color Subscription by Variable. Users are now able to access more than 16,500 Pantone colors directly through the Spectro by Variable app when they subscribe to a Pantone Color Subscription within. Created with frictionless color communication in mind, the Spectro by Variable app connects to the Spectro 1 and Spectro 1 Pro devices, allowing color professionals to achieve professional-grade color matches and view deep color data anytime, anywhere. About the Spectro 1 and Spectro 1 Pro Devices: Spectro 1 is a compact, affordable color measurement tool for accurately measuring and communicating color at the professional and industrial level. Using patented technology, the Spectro units are true spectrophotometers that deliver accuracy and repeatability comparable to expensive benchtop spectrophotometers—for a fraction of the price. Features: Scan, match, and compare colors View spectral curves for scanned colors Achieve exact matches with spectral curve and LAB values Have access to dozens of brands like Behr, Benjamin Moore, Dulux, PPG, Sherwin-Williams in the palm of your hand View matches under four different light sources including A, F2, D50, and D65 (Incandescent, fluorescent, horizon, and noon daylight) Include 2 & 10 degree observations Store scans and scan data Export scan history, inspection history, and saved colors Save and export spectral curve data in 10 nm increments between 400-700 nm Create and store standards through the Saved Colors features Supports multiple dE formulas And much more!

About

KarmaBuilder

This app assists founders and solo marketers in crafting effective Reddit posts and comments. It helps discover relevant subreddits, generate draft content, and provides coaching for replies. Users can track their progress and manage posting schedules, ensuring authentic community engagement.

Highlights
  • Subreddit discovery with risk guidance
  • AI-generated post drafts
  • Reply coaching for discussions
  • Draft and content scheduling
  • Karma goal and streak tracking
  • Manual posting control
Features
Read full description

KarmaBuilder helps founders and solo marketers write Reddit-native posts and comments faster—with less guesswork and more consistency. Turn a rough idea into a publish-ready draft in minutes. KarmaBuilder is built for real community participation, not spam or automation. WHAT YOU CAN DO • Discover — Find subreddits that fit your topic, with difficulty, activity, and moderation-risk guidance • Compose — Generate post drafts from your goal: stories, questions, debates, advice requests, and more • Conversations — Paste a Reddit thread URL and get reply coaching that fits the discussion • Schedule — Track drafts, posted content, and per-subreddit cooldown timers • Home — Log karma goals, streaks, and your content pipeline IMPORTANT: KarmaBuilder does not post to Reddit for you. You stay in control—copy drafts and publish manually in the Reddit app or on the web. FREE TO TRY Get 5 AI generations to explore the workflow. KARMABUILDER PRO Pro unlocks unlimited AI drafting, thread-aware reply coaching, and advanced cooldown reminders. Choose Monthly, Yearly, or Lifetime Pro access. Yearly includes a 3-day free trial for eligible new subscribers. Payment is charged to your Apple ID account. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in Settings → Apple ID → Subscriptions. Lifetime Pro is a one-time purchase and does not renew. Terms of Use: https://karmabuilder-api-proxy.eugenen.workers.dev/terms Privacy Policy: https://karmabuilder-api-proxy.eugenen.workers.dev/privacy

Screenshots

Spectro by Variable4 screens
KarmaBuilder4 screens

Verdict

The call

The clearest difference is review sentiment: KarmaBuilder at 100% against Spectro by Variable's 50%. KarmaBuilder also leads on rating (5.0 vs 4.8). Spectro by Variable's advantage is ratings volume (118 vs 2) and iOS requirement (13.4 vs 17.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Spectro by Variable sells 5 in-app purchases, starting at $9.99 per month and KarmaBuilder sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

KarmaBuilder holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Spectro by Variable has 118 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of Spectro by Variable's written reviews are positive against 100% of KarmaBuilder's.

UpkeepUpdate frequency

Spectro by Variable ships an update every 3 weeks, KarmaBuilder every 5 weeks. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 6 level
Spectro by Variable versus KarmaBuilder: the parameters behind the verdict, then further details
ParameterSpectro by VariableKarmaBuilder
PriceFreeFree
Rating4.8 (118 ratings)5.0 (2 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings118 — better2
Update frequencyEvery 3 weeks — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.4 — better17.0
Further details — not scored
Size84 MB17 MB
Age rating4+4+
DeveloperVariable Technologies LLCThinkAI LLC

Customer experience

Spectro by Variable

All ratings118 ratings
Positive97.5%
Neutral0.8%
Negative1.7%
Written reviews6 reviews
Positive50.0%
Neutral33.3%
Negative16.7%

KarmaBuilder

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

5 purchases

Spectro by Variable

Subscriptions5
  • Monthly$9.991 Month
  • Monthly$15.991 Month
  • Quality Control Module1 Month trial$75.001 Month
Show 2 more
  • Annual$99.991 Year
  • Annual$149.991 Year
3 purchases

KarmaBuilder

Subscriptions2
  • Monthly Pro Access$4.991 Month
  • Yearly Pro Access$29.991 Year
One-time1
  • Lifetime Pro Access$79.99

Questions

Is Spectro by Variable free?
Spectro by Variable is free to download, with in-app purchases available.
Is KarmaBuilder free?
KarmaBuilder is free to download, with in-app purchases available.
Which has better reviews, Spectro by Variable or KarmaBuilder?
KarmaBuilder is rated higher. Spectro by Variable averages 4.8 out of 5 from 118 ratings, while KarmaBuilder averages 5.0 from 2 ratings.
Do Spectro by Variable or KarmaBuilder have ads?
Neither Spectro by Variable nor KarmaBuilder shows ads.
Which is updated more often, Spectro by Variable or KarmaBuilder?
Spectro by Variable ships an update every 3 weeks, and KarmaBuilder every 5 weeks. Most recently, Spectro by Variable was updated on October 5, 2026 and KarmaBuilder on October 3, 2026.

Other comparisons