Deep Tech

How a South Korean University Team Is Turning Industrial Air Into Power

A turbine-inspired generator shows how overlooked industrial airflow could quietly become a new source of usable power

Updated

February 3, 2026 11:23 AM

Campus building of Chung-Ang University. PHOTO: CHUNG-ANG UNIVERSITY

Compressed air is used across factories, data centers and industrial plants to move materials, cool systems and power tools. Once it has done that job, the air is usually released — and its remaining energy goes unused.

That everyday waste is what caught the attention of a research team at Chung-Ang University in South Korea. They are investigating how this overlooked airflow can be harnessed to generate electricity instead of disappearing into the background.

Most of the world’s power today comes from systems like turbines, which turn moving fluids into energy or solar cells, which convert sunlight into electricity. The Chung-Ang team has built a device that uses compressed air to generate electricity without relying on traditional blades or sunlight.

At the center of the work is a simple question: what happens when high-pressure air spins through a specially shaped device at very high speed?  The answer lies in the air itself. The researchers found that tiny particles naturally present in the air carry an electric charge. When that air moves rapidly across certain surfaces, it can transfer charge without physical contact. This creates electricity through a process known as the “particulate static effect.”

To use that effect, the team designed a generator based on a Tesla turbine. Unlike conventional turbines with blades, a Tesla turbine uses smooth rotating disks and relies on the viscosity of air to create motion. Compressed air enters the device, spins the disks at high speed and triggers charge buildup on specially layered surfaces inside.

What makes this approach different is that the system does not depend on friction between parts rubbing together. Instead, the charge comes from particles in the air interacting with the surfaces as they move past. This reduces wear and allows the generator to operate at very high speeds. And those speeds translate into real output.

In lab tests, the device produced strong electrical power. The researchers also showed that this energy could be used in practical ways. It ran small electronic devices, helped pull moisture from the air and removed dust particles from its surroundings.

The problem this research is addressing is straightforward.
Compressed air is already everywhere in industry, but its leftover energy is usually ignored. This system is designed to capture part of that unused motion and convert it into electricity without adding complex equipment or major safety risks.

Earlier methods of harvesting static electricity from particles showed promise, but they came with dangers. Uncontrolled discharge could cause sparks or even ignition. By using a sealed, turbine-based structure, the Chung-Ang University team offers a safer and more stable way to apply the same physical effect.

As a result, the technology is still in the research stage, but its direction is easy to see. It points toward a future where energy is not only generated in power plants or stored in batteries, but also recovered from everyday industrial processes.

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Fintech & Payments

5 Budget Monitoring Apps That Will Keep Your Spending on Track

Take charge of your finances with these top budget monitoring apps that make tracking spending simple, smart, and stress-free.

Updated

January 8, 2026 6:36 PM

A phone next to a laptop, displaying a stock market app. PHOTO: UNSPLASH

Managing personal finances can feel overwhelming, especially with the countless expenses we juggle daily. Thankfully, budget monitoring apps are hereto save the day. These handy tools help you track your spending, set financial goals, and build better money habits—all from the convenience of your smartphone.

Whether you're saving for a vacation, paying off debt, or just trying to avoid those end-of-the-month surprises, budget tracker apps can provide clarity and control over your finances. Here are 5 budget monitoring apps that will keep your spending on track.

1. Monefy
Overview:

If simplicity is what you’re after, Monefy is the solution. Known for its highly intuitive interface, Monefy lets users track their spending with just a few taps. Unlike many budget apps that overwhelm you with features, Monefy focuses on the essentials, making it great for beginners or anyone looking for a straightforward way to manage their money.

Features:
  • One-tap expense tracking: Add an expense by simply selecting a category and entering the amount.
  • Categorized spending: Track where your money goes with predefined categories like food, transport, and entertainment (or create your own).
  • Visual reports: Beautiful pie charts help you quickly understand your spending patterns.
  • Cross-device sync: Use cloud services like Google Drive or Dropbox to sync your data securely.
Pros:
  • Simple and fast manual entry—no need to navigate complex menus.
  • Clean and colorful visuals that make budgeting feel less daunting.
  • Works offline, so you can track expenses anytime.
Cons:
  • Free version is limited and lacks advanced features like bank syncing.
  • Requires manual entry for every expense, which can feel tedious over time.
Platforms available:
  • Android, iOS
Who it’s for:

Monefy is perfect for users who want a no-frills app to track spending or beginners just dipping their toes into budgeting.

2. Fortune CityA finance app
Overview:

Budgeting doesn’t have to feel like a chore, and Fortune City proves just that. This app gamifies your financial habits by turning expense tracking into a city-building game. Every category of spending contributes to your virtual city’s development, making it an enjoyable way to visualize where your money is going.

Features:
  • Expense tracking through gameplay: Every transaction grows your city, with different categories influencing different aspects of development.
  • Daily financial reports: See a breakdown of your spending habits presented in a fun, game-like format.
  • Social features: Compete with friends or family to see who’s building the most thriving city.
Pros:
  • Engaging and entertaining, especially for users who struggle with traditional budgeting methods.
  • The gamified approach incentivizes consistent expense tracking.
  • Great visuals and a playful design make it enjoyable to use.
Cons:
  • May feel too gimmicky for users who prefer a more serious approach to budgeting.
  • Advanced features like detailed analytics require in-app purchases.
Platforms available:
  • Android, iOS
Who it’s for:

Fortune City is ideal for those who find traditional budgeting boring or intimidating and want a fun way to stay consistent.

3. Jupiter
Overview:

Jupiter combines the best of both worlds: digital banking and budgeting. This app integrates directly with your bank account, automatically categorizing transactions and providing insights into your spending patterns. It’s not just a budget tracker—it’s a full-fledged financial assistant.

Features:
  • Automated expense tracking: Transactions are categorized in real time, removing the need for manual input.
  • Smart insights: The app highlights spending trends, so you know where to cut back.
  • Goal-based savings: Create savings "jars" for specific goals, like vacations or emergency funds.
  • Zero hidden fees: Use Jupiter without worrying about subscription costs or hidden charges.
Pros:
  • Seamlessly integrates with your bank, saving time and effort.
  • Provides a holistic view of your finances in one app.
  • Clean and modern user interface.
Cons:
  • Limited availability to users in select regions.
  • Lacks the flexibility of manual-budgeting apps for users who want full control.
Platforms available:
  • Android, iOS
Who it’s for:

Jupiter is best for users who want a hands-off budgeting experience and prefer an all-in-one app for banking and money management.

4. GoodBudget
Overview:

Inspired by the envelope budgeting method, GoodBudget offers a digital twist on this classic approach. Instead of physical envelopes, you allocate your money into virtual "envelopes" for different spending categories. This app encourages disciplined spending and is particularly effective for budgeters who like to plan ahead.

Features:
  • Virtual envelopes: Set up envelopes for categories like groceries, dining, and rent.
  • Sync across devices: Share your budget with family members or a partner to track finances together.
  • Spending reports: Visualize how much you’ve spent and how much is left in each envelope.
Pros:
  • Encourages mindful spending by limiting overspending in specific categories.
  • Great for shared budgets with partners or families.
  • Simple and effective for users who like planning their finances in advance.
Cons:
  • No automated bank syncing—you’ll need to enter transactions manually.
  • May feel restrictive for users who prefer more flexibility in their budgets.
Platforms available:
  • Android, iOS, Web
Who it’s for:

GoodBudget is ideal for planners who like a structured approach to budgeting and don’t mind manual tracking.

5. Wally
Overview:

Wally is a feature-packed app designed for users who want deep insights into their spending habits. Its sleek design, multi-currency support, and detailed financial reports make it a standout option, especially for frequent travelers or professionals juggling multiple accounts.

Features:
  • Expense and income tracking: Monitor your cash flow with precision.
  • Multi-currency support: Ideal for travelers or expats managing finances across countries.
  • Goal setting and bill reminders: Stay on top of due dates and savings plans.
  • Bank syncing: Automates transaction tracking for ease of use.
Pros:
  • Highly detailed and customizable financial tracking.
  • Supports multiple currencies, making it great for international users.
  • Offers both automated tracking and manual entry for flexibility
Cons:
  • Extensive features can feel overwhelming for new users.
  • Premium subscription required for advanced tools.
Platforms available:
  • Android, iOS
Who it’s for:

Wally is perfect for users who want advanced budgeting tools and detailed insights, especially those with international financial needs.

Conclusion

Budget monitoring apps are powerful tools that simplify the often-daunting task of managing your finances. Whether you’re drawn to the playful gamification of Fortune City, the structured approach of GoodBudget, or the all-in-one convenience of Jupiter, there’s an app tailored to your preferences and goals.

These apps don’t just track your spending—they help you build better habits, gain financial clarity, and take control of your money. With the right app in your pocket, managing your budget becomes less of a chore and more of are warding journey toward financial freedom. So why wait? Choose an app, start tracking, and watch your financial confidence grow!