Unit Eater vs Budzly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Unit Eater
This utility app functions as a powerful calculator that handles unit conversions and calculations. It supports a vast array of predefined units and allows users to define their own, making it ideal for scientific and academic tasks. Features include a calculation history, customizable results, and dark mode.
- Unit conversion and calculation
- Custom unit definition
- Extensive unit library
- Calculation history
- Customizable result format
- Dark mode
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Unique calculator that not only converts units, but can also perform calculations with them. Perfect for school, university, work, or personal use! For math, physics, chemistry, biology, engineering, or any other natural sciences! - Standard calculator functions usable with or without units - Target unit freely definable - Define your own units if you need them - History of recent calculations - Quick transfer of parts or entire calculations from history - ANS function to dynamically use the last result - Customizable result format - Quick search - Quick access to important functions like square or cube - Undo and redo of last steps - Dark mode Boost your productivity, focus on the essentials, and leave conversion errors in the past! Supports many units, prefixes, and constants: * Prefixes: kilo, mega, giga, tera, centi, milli, micro, nano, … * Constants: mass of proton, neutron, electron, Avogadro's constant, electric field constant, gas constant, Planck's constant, … * Angles: radian, degree, degree-minute, degree-second, gradian, turn, steradian, … * Length: meter, mile, inch, foot, yard, nautical mile, chain, furlong, cable length, rod, … * Area: square meter, hectare, acre, are, square kilometer, square inch, square foot, square yard, … * Volume: liter, cubic meter, fluid ounce, gallon, gill, pint, quart, barrel, tablespoon, teaspoon, … * Mass: gram, ton, ounce, pound, carat, grain, … * Time: second, minute, hour, day, year, … * Speed: meter per second, kilometer per hour, miles per hour, knot, speed of light, … * Acceleration: gravitational acceleration, meter per second squared, … * Energy: joule, kilocalorie, erg, watt-hour, electronvolt, … * Power: watt, horsepower, … * Force: Newton, pond, kilopond, tf, ozf, lbf, … * Torque: Newton meter, ozfin, ozfft, lbf*in, … * Frequency: Hertz, revolutions per minute, … * Pressure: pascal, bar, atm, at, Torr, mmHg, osi, ose, psi, psf, … * Viscosity: Poise, Stokes, … * Density: gram per cubic centimeter, kg per cubic meter, … * Radiation: Becquerel, Curie, Rutherford, Roentgen, Gray, Sievert, rem, … * Light: candela, lumen, lux * Electricity: volt, ampere, ohm, coulomb, elementary charge, farad, siemens, … * Magnetism: Weber, Tesla, Henry, … Is your desired unit not listed? You can define any additional units! Privacy Policy: https://www.iubenda.com/privacy-policy/22446614 Terms and Conditions: https://www.iubenda.com/terms-and-conditions/22446614
Budzly
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Main Features Plant Management • Manage unlimited plants • Automatically track growth stages • Plant types: Indica, Sativa, Hybrid, Autoflower • Document planting and harvest dates Grow Box System • Manage multiple grow boxes simultaneously • Document technical specifications • Record temperature and humidity Comprehensive Plant Care • Watering, fertilizing, pruning • Measurements (height, pH level, temperature) • Track CO₂ levels and pot weight • Add notes and observations Photo Documentation • Document growth progress with photos • Create time-lapse videos • Photo album with chronological sorting • HD photo quality (Premium) • Unlimited cloud storage (Premium) Fertilizer Manager (Premium) • Manage up to 15 fertilizers professionally • Create a personal fertilizer library • Quick access during plant care Energy Cost Tracking • Calculate energy costs per grow box • Monitor power consumption • Detailed monthly cost overview (Premium) Smart Reminders • Set watering reminders • Flexible intervals: daily, every 2–5 days • Notifications for all plant care activities Premium Features • Unlimited cloud storage (Premium) • HD photo quality (Premium) • Detailed monthly cost overview (Premium) • Customize the app’s appearance (Premium) • Fertilizer manager with up to 15 fertilizers (Premium) Pricing • Monthly: €3.99 • Yearly: €39.99 Technical Features • Use on unlimited devices • PIN protection for the app • Multilingual: German and English Terms & Privacy Terms of Service: https://techappsolutions.app/terms-of-service.html Privacy Policy: https://techappsolutions.app/privacy-policy.html Note: The links to the Privacy Policy and Terms of Service are also available directly in the app under Profile → About. Subscription Information The subscription automatically renews unless canceled at least 24 hours before the end of the current billing period. Payment will be charged to the account associated with your Apple ID. Auto-renewal can be disabled at any time in the account settings after purchase.
Screenshots
Verdict
The clearest difference is device support: Unit Eater at 4 against Budzly's 2. Unit Eater also leads on iOS requirement (12.0 vs 16.6). On price, update cadence, ads 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. Unit Eater sells 2 in-app purchases, starting at $0.99 per month and Budzly sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Unit Eater ships an update every 2 weeks, Budzly every 8 days. The most recent releases landed on September 11, 2026 and September 15, 2026 respectively.
| Parameter | Unit Eater | Budzly |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 2 weeks | Every 8 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 65 MB | 24 MB |
| Age rating | 4+ | 17+ |
| Developer | Tom Leon Schmidt | Sabri Yesilbas |
In-app purchases
Unit Eater
- Premium - Monthly$0.991 Month
- Premium - Pay once$3.99
Budzly
- Premium Monthly14 Days trial$2.991 Month
- Yearly Premium Subscriptio14 Days trial$24.991 Year
- Tip Jar$1.99
- Tip Jar$2.99
- Tip Jar$7.99









