Abaculator vs Environmental Engineering PRO
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Abaculator
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Abaculator can be used as a calculator or an abacus. You can do addition, subtraction, multiplication and division with abaculator. Simple tutorials are available for you to learn abacus. And you can switch between 3 languages. The bead movement speed can also be adjusted.
Environmental Engineering PRO
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Environmental Engineering Practice is an educational application designed to help students understand and practice key concepts related to environmental protection, water and wastewater treatment, pollution control, and sustainable development. The app focuses on structured learning through chapter-wise quizzes, mock tests, and daily quizzes aligned with standard environmental engineering curricula. Users can practice questions from individual topics, attempt mock tests for overall assessment, and monitor their performance using statistics. The app supports self-study, classroom learning, and examination preparation for engineering students. Topics Included 1. Introduction to Environmental Engineering Scope of environmental engineering, environmental pollution, sustainable development, environmental laws, and environmental impact assessment. 2. Water Supply Engineering Water demand, sources of water, intake structures, treatment processes, distribution systems, and water quality standards. 3. Water Treatment Methods Screening, sedimentation, coagulation and flocculation, filtration, disinfection, and softening. 4. Wastewater Engineering Sewerage systems, wastewater characteristics, treatment processes, and effluent disposal. 5. Primary and Secondary Treatment Primary treatment processes, sedimentation tanks, secondary biological treatment, activated sludge process, and trickling filters. 6. Sludge Treatment and Disposal Sludge digestion, anaerobic digestion, dewatering, drying beds, and disposal methods. 7. Solid Waste Management Sources of solid waste, collection methods, segregation, composting, and sanitary landfill. 8. Air Pollution Control Sources and types of air pollutants, control devices, air quality standards, and stack emission monitoring. 9. Noise Pollution Control Sources of noise, measurement, effects, control methods, and permissible standards. 10. Environmental Chemistry and Microbiology Water chemistry, biochemical oxygen demand, chemical oxygen demand, pH, microorganisms, and eutrophication. 11. Environmental Management Waste minimization, recycling, resource recovery, green technologies, and climate change mitigation. 12. Public Health Engineering Sanitation, waterborne diseases, vector control, rural water supply, and urban sanitation systems. Key Features Chapter-wise practice quizzes Mock tests for full syllabus assessment Daily quiz for regular practice Performance statistics to track progress Content aligned with environmental engineering syllabus Simple and distraction-free interface Environmental Engineering Practice is suitable for civil and environmental engineering students preparing for examinations and strengthening conceptual understanding through consistent practice.
Screenshots
Verdict
The clearest difference is price: Abaculator at Free against Environmental Engineering PRO's $0.49. Environmental Engineering PRO's advantage is update cadence (every 5 months vs every 35 months) and iOS requirement (13.0 vs 15.6). On ads, in-app purchases 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
Abaculator is free to download; Environmental Engineering PRO costs $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.
Abaculator ships an update every 35 months, Environmental Engineering PRO every 5 months. The most recent releases landed on September 9, 2026 and September 17, 2026 respectively.
| Parameter | Abaculator | Environmental Engineering PRO |
|---|---|---|
| Price | Free โ better | $0.49 |
| Update frequency | Every 35 months | Every 5 months โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 โ better |
| Further details โ not scored | ||
| Size | 45 MB | 23 MB |
| Age rating | 4+ | 17+ |
| Developer | Chi-Cheng Liao | Manish Kumar |
In-app purchases
Abaculator
No in-app purchases
Environmental Engineering PRO
No in-app purchases
Questions
Is Abaculator free?
Is Environmental Engineering PRO free?
Do Abaculator or Environmental Engineering PRO have ads?
Which is updated more often, Abaculator or Environmental Engineering PRO?
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