Comparison

DRUIDapp vs NLE Calc

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

Head to head
About

DRUIDapp

This app assesses cognitive and motor function impairment using neuroscience-based tests. It offers quick or benchmark assessments to detect impairment from various causes like drugs, alcohol, fatigue, or illness. A workplace version with management controls is also available.

Highlights
  • Cognitive and motor function assessment
  • 1-minute Rapid Test
  • 3-minute Benchmark Test
  • Detects impairment from various causes
  • Neuroscience-based technology
  • Workplace management controls available
Read full description

DRUID is a test for personal and workplace use that measures impairment of cognitive and motor functions. Users chose between either the 1-minute Rapid Druid Test or the 3-minute Benchmark Druid Test. Start your free 14-day trial today. DRUID applies neuroscience research to bring you a sophisticated tool that detects and measures cognitive and motor impairment from any cause, including from cannabis, illicit or prescription drugs, alcohol, fatigue, illness, chronic condition, concussion, severe emotional stress, or injury. Currently available for all smart phones and tablets, DRUID operates like a video game but with each use records hundreds of neurophysiological indicators. Are your employees fit for duty? A version of DRUID that includes management controls is also available for the workplace. Impaired employees, including those under the influence of alcohol or drugs, have slower reflexes and impaired balance. Impaired physical coordination, mental acuity and decision-making results in inefficient or incompetent work, reducing productivity and exposing employees and co-workers to far greater risk of injury or even death. Please note DRUID App is a utility application. DRUID app is not a medical app.

About

NLE Calc

This utility calculates the Recommended Weight Limit (RWL) and Lifting Index (LI) for single or multiple lifting tasks based on the NIOSH Lifting Equation. It helps assess physical stress to prevent low back musculoskeletal disorders.

Highlights
  • Calculates Recommended Weight Limit (RWL)
  • Calculates Lifting Index (LI)
  • Calculates Composite Lifting Index (CLI)
  • Based on Revised NIOSH Lifting Equation
  • Assesses physical stress for lifting tasks
Features
Read full description

The NIOSH Lifting Equation calculator (NLE Calc) is based on the Applications Manual for the Revised NIOSH Lifting Equation (Pub No. 94-110) and can be used to calculate the Recommended Weight Limit (RWL) and for single or multiple lifting tasks. The Lifting Index (LI) is an index of the relative physical stress for performing a single lifting task and the Composite Lifting Index (CLI) is an index of the overall physical stress for performing multiple lifting tasks. NIOSH recommends an LI and a CLI of 1 or less for protecting workers from physical stress related to development of low back musculoskeletal disorders. Please refer to the Applications Manual for the Revised NIOSH Lifting Equation publication for examples and details on how calculations are performed and what the results imply.

Screenshots

DRUIDapp4 screens
NLE Calc4 screens

Verdict

The call

The clearest difference is review sentiment: DRUIDapp at 53% against NLE Calc's 0%. DRUIDapp also leads on rating (3.9 vs 2.8) and ratings volume (164 vs 10). NLE Calc's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 16.6). On price, update cadence, ads and device support 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. DRUIDapp sells 2 one-off in-app purchases. NLE Calc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

DRUIDapp holds the better App Store score, 3.9 against 2.8. That said, the two scores are not equally well evidenced: DRUIDapp has 164 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 53% of DRUIDapp's written reviews are positive against 0% of NLE Calc's.

UpkeepUpdate frequency

DRUIDapp ships an update monthly, NLE Calc fortnightly. The most recent releases landed on September 13, 2026 and September 20, 2026 respectively.

Scorecard6 real differences · 4 level
DRUIDapp versus NLE Calc: the parameters behind the verdict, then further details
ParameterDRUIDappNLE Calc
PriceFreeFree
Rating3.9 (164 ratings) — better2.8 (10 ratings)
Positive reviews52.9% of reviews — better0.0% of reviews
Number of ratings164 — better10
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.612.0 — better
Further details — not scored
Size82 MB62 MB
Age rating4+4+
DeveloperImpairment Science, Inc.Centers For Disease Control and Prevention

Customer experience

DRUIDapp

All ratings164 ratings
Positive72.6%
Neutral1.8%
Negative25.6%
Written reviews34 reviews
Positive52.9%
Neutral5.9%
Negative41.2%

NLE Calc

All ratings10 ratings
Positive30.0%
Neutral20.0%
Negative50.0%
Written reviews4 reviews
Positive0.0%
Neutral25.0%
Negative75.0%

In-app purchases

2 purchases

DRUIDapp

One-time2
  • DRUID Premium$1.99
  • DRUID Premium$14.99
None

NLE Calc

No in-app purchases

Questions

Is DRUIDapp free?
DRUIDapp is free to download, with in-app purchases available.
Is NLE Calc free?
NLE Calc is free to download, with no in-app purchases.
Which has better reviews, DRUIDapp or NLE Calc?
DRUIDapp is rated higher. DRUIDapp averages 3.9 out of 5 from 164 ratings, while NLE Calc averages 2.8 from 10 ratings.
Do DRUIDapp or NLE Calc have ads?
Neither DRUIDapp nor NLE Calc shows ads.
Which is updated more often, DRUIDapp or NLE Calc?
DRUIDapp ships an update monthly, and NLE Calc fortnightly. Most recently, DRUIDapp was updated on September 13, 2026 and NLE Calc on September 20, 2026.

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