NLE Calc vs ZalBa
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.
ZalBa
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Note: - This app in only purposed to support the CCTV recorders manufactured by Visionhitech Co.,Ltd. Functions: - Live Screen View - PTZ Control - Alarm Out Control - Speaking - Playback
Screenshots
Verdict
The clearest difference is update cadence: NLE Calc at fortnightly against ZalBa's every 4 months. On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
NLE Calc ships an update fortnightly, ZalBa every 4 months. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.
| Parameter | NLE Calc | ZalBa |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (10 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Fortnightly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 62 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Centers For Disease Control and Prevention | Visionhitech |
In-app purchases
NLE Calc
No in-app purchases
ZalBa
No in-app purchases
