Comparison

Achromator vs NEC Box Fill Calc

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

Head to head
About

Achromator

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Ever wondered why everyone keeps going on about the beautiful colors of the sunset? Having trouble seeing if a tomato is ripe? What about bananas? Or maybe you just find the world to colorful and want to keep it a little more black-and-white for the day? Achromator translates all color from the phone video stream into unique animated textures. It encodes all hues and shades - without loss of information! It even keeps much of the structure found in color, like mixing, gradual blending and complementary hues. The pattern generator can be adjusted to your personal preference - pattern size, speed and selection of individual colors.

About

NEC Box Fill Calc

Features
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NEC Box Fill Calc gives electricians a complete NEC 314.16(B) single-box field check at no charge. When a job spans multiple boxes, the existing Rough-In Schedule keeps labels and corrections together for a shareable handoff. Free field check: - Add conductors by gauge from 18 AWG through 6 AWG - Count grounding conductors, internal clamps, support fittings, and devices correctly - See total fill, pass/fail status, line-by-line breakdown, and the smallest listed standard box that fits - Switch between 20 standard box sizes or enter a custom marked volume - Work fully offline with no account, ads, or subscription Unlock the Rough-In Box Schedule once to: - Name the current project and label each box or room - Collect up to 30 completed box checks on device - See project totals for passing and overfilled boxes - Put every required correction first, including overage, current box, and recommended replacement - Reload any scheduled check into the free calculator - Share or export one complete plain-text schedule - Restore lifetime access on another device Built for electricians, apprentices, and foremen who want to avoid repulls, box swaps, and inspection-day surprises. Important: - Always verify the enclosure's marked volume and local requirements on site. - This app is a practical field aid, not a substitute for code judgment or inspection approval.

Screenshots

Achromator3 screens
NEC Box Fill Calc3 screens

Verdict

The call

The clearest difference is in-app purchases: Achromator at none against NEC Box Fill Calc's 1. On price, update cadence, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. NEC Box Fill Calc sells 1 one-off in-app purchase. Achromator asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard1 real difference ยท 5 level
Achromator versus NEC Box Fill Calc: the parameters behind the verdict, then further details
ParameterAchromatorNEC Box Fill Calc
PriceFreeFree
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS17.617.0 โ€” better
Further details โ€” not scored
Size1 MB2 MB
Age rating4+4+
DeveloperHANS-JURGEN GRAF GROTEๅ…‰ ๆจ

In-app purchases

None

Achromator

No in-app purchases

1 purchases

NEC Box Fill Calc

One-time1
  • Inspection Cards Lifetime Unlock$7.99

Questions

Is Achromator free?
Achromator is free to download, with no in-app purchases.
Is NEC Box Fill Calc free?
NEC Box Fill Calc is free to download, with in-app purchases available.
Do Achromator or NEC Box Fill Calc have ads?
Neither Achromator nor NEC Box Fill Calc shows ads.
Which is updated more often, Achromator or NEC Box Fill Calc?
Achromator ships an update monthly, and NEC Box Fill Calc monthly. Most recently, Achromator was updated on November 4, 2026 and NEC Box Fill Calc on October 31, 2026.

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