CONVERT UNITS vs Acronyms & Definitions
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CONVERT UNITS
Easily convert between various units of measurement including length, weight, temperature, and currency. Features automatic currency updates, a vast selection of currencies, and customizable display options for accuracy and rounding. Optimized for multitasking on iPad and offers a beautiful dark design.
- Converts length, weight, speed, area, time, pressure, volume, power, fuel, temperature, data, and currency
- Automatic currency updates
- 160 currencies available
- Multitasking enabled for iPad
- Alphabetical quick links for units
- Customizable startup categories
- Adjustable accuracy and rounding
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160 currencies · 126 cryptocurrencies · 685 units across 72 categories CONVERT ANYWHERE, EVEN OFFLINE Convert units without an internet connection. Currency and crypto conversions use your saved rates offline; an internet connection is needed to refresh rates. • No Full Screen Ads • Find units quickly with search and an alphabetical index • Control precision with decimal places and significant figures • Choose your starting category and hide categories you don’t use • Personalize your colors with curated or custom themes, available with Premium Designed for iPhone and iPad, with Split View support Dark and light appearance support CONVERSION CATEGORIES Everyday conversions Length, weight, temperature, area, volume, speed, time, fuel economy, pace, data, data transfer rate, angle, shoe sizes, ring sizes, amount, image resolution, typography and blood sugar Engineering and mechanics Pressure, torque, force, energy, power, acceleration, angular acceleration, moment of inertia, density, specific volume, flow, mass flux density, surface tension, viscosity, kinematic viscosity and permeability Electricity and magnetism Current, voltage, resistance, charge, frequency, capacitance, inductance, conductance, electric field strength, electric resistivity, electric conductivity, magnetic flux, magnetic field strength, magnetic flux density, magnetomotive force, linear charge density, surface charge density, volume charge density, linear current density and surface current density Heat and temperature Temperature interval, thermal conductivity, specific heat capacity, heat density, heat flux density, heat transfer coefficient and thermal expansion Chemistry Molar concentration, molar mass and molar flow rate Light, sound and radiation Luminance, illumination, luminous intensity, sound, radiation, radioactivity and exposure Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://developer-yl.github.io/convert-units/privacy.html
Acronyms & Definitions
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Acronyms & Definitions Stop forgetting what that acronym means. Acronyms & Definitions is a simple, powerful reference tool that lets you build your own personal glossary of terms, abbreviations, and definitions. Why you need it: Every industry, organization, and field has its own language. Acronyms & Definitions helps you capture and organize unfamiliar terms as you encounter them — so you never have to look up the same thing twice. Key Features: • Save acronyms alongside their full definitions and detailed descriptions • Categorize entries by type — General, Industry, Corporate, Government, Technical, Legal, Financial, or Cultural • Add quotes with reference documents to track where definitions came from • Attach images for visual explanations such as diagrams and charts • Search across all fields to find entries instantly • Import and export CSV files — share your glossary with colleagues on any platform • iCloud sync keeps your data up to date across iPhone and Mac Built for professionals, students, and anyone who deals with specialized terminology.
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Verdict
The clearest difference is in-app purchases: Acronyms & Definitions at none against CONVERT UNITS's 2. Acronyms & Definitions also leads on ads (none vs shown). CONVERT UNITS's advantage is update cadence (weekly vs every 2 months) and iOS requirement (15.0 vs 18.2). On price 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. CONVERT UNITS sells 2 in-app purchases, starting at $0.99 per month. Acronyms & Definitions asks for nothing beyond the download.
CONVERT UNITS ships an update weekly, Acronyms & Definitions every 2 months. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.
| Parameter | CONVERT UNITS | Acronyms & Definitions |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (1.4K ratings) — better | — |
| Positive reviews | 75.8% of reviews | — |
| Number of ratings | 1.4K — better | — |
| Update frequency | Weekly — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 22 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Adysseus | Nikolay Vysochin |
Bugs and requests
CONVERT UNITS
Reported bugs
2 issues- App got stuck, required uninstall/reinstall to fix
- Navigation issues, unable to get back to home page
Requested features
2 requests- Option to convert between functions (length to volume)
- Remember last conversion settings for each category
Acronyms & Definitions
Not enough reviews yet to summarise bugs or requests.
In-app purchases
CONVERT UNITS
- Remove ads$0.991 Month
- Remove ads$19.99
Acronyms & Definitions
No in-app purchases
Questions
Is CONVERT UNITS free?
Is Acronyms & Definitions free?
Do CONVERT UNITS or Acronyms & Definitions have ads?
Which is updated more often, CONVERT UNITS or Acronyms & Definitions?
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