NLE Calc vs Luminosys
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Luminosys
Accurately measure ambient light levels in Lux or Foot Candles using your phone's camera. This tool is ideal for photography, comparing light sources, or indoor gardening. It's designed for ease of use and provides precise readings.
- Measures light in Lux
- Measures light in Foot Candles (FC)
- Uses phone camera for accuracy
- Easy to use interface
- Suitable for photography
- Useful for indoor gardening
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Luminosys allows you to accurately measure the ambient light level in Lux or Foot Candles (FC). To do this, Luminosys uses your phone's camera in conjunction with a piece of paper to accurately measure the light level. It is very easy to use and is a great app for those looking for accurate light measurements for photography, comparing light sources, or indoor gardening.
Screenshots
Verdict
The clearest difference is review sentiment: Luminosys at 75% against NLE Calc's 0%. Luminosys also leads on rating (4.3 vs 2.8). NLE Calc's advantage is ads (none vs shown) and update cadence (fortnightly vs every 19 months). On price, ratings volume 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Luminosys holds the better App Store score, 4.3 against 2.8. Both are backed by a comparable volume of ratings — 10 and 10 respectively. Written reviews point the same way: 0% of NLE Calc's written reviews are positive against 75% of Luminosys's.
NLE Calc ships an update fortnightly, Luminosys every 19 months. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.
| Parameter | NLE Calc | Luminosys |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (10 ratings) | 4.3 (10 ratings) — better |
| Positive reviews | 0.0% of reviews | 75.0% of reviews — better |
| Number of ratings | 10 | 10 |
| Update frequency | Fortnightly — better | Every 19 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 62 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Centers For Disease Control and Prevention | Melissa Zwick |
Customer experience
NLE Calc
Luminosys
In-app purchases
NLE Calc
No in-app purchases
Luminosys
No in-app purchases
Questions
Is NLE Calc free?
Is Luminosys free?
Which has better reviews, NLE Calc or Luminosys?
Do NLE Calc or Luminosys have ads?
Which is updated more often, NLE Calc or Luminosys?
Other comparisons
