Comparison

CONVERT UNITS vs Railroad

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

Railroad

Features
Read full description

Trip Log Book is the professional solution for railroad workers to track and manage train operations. KEY FEATURES: - Comprehensive trip logging with 20+ data fields - Photo attachments and detailed notes - Analytics dashboard with trends and insights - FRA hours-of-service compliance warnings - Professional PDF and CSV exports - Secure with Face ID/Touch ID - Automatic iCloud backup and sync - Template system for frequent routes - Smart duplicate detection COMPLIANCE: Built for railroad professionals who need reliable, FRA-compliant logging for regulatory reporting and personal records. SECURITY: Your data is protected with biometric authentication and encrypted storage both on-device and in iCloud.

Screenshots

CONVERT UNITS4 screens
Railroad4 screens

Verdict

The call

The clearest difference is in-app purchases: Railroad at none against CONVERT UNITS's 2. Railroad also leads on ads (none vs shown) and update cadence (daily vs weekly). CONVERT UNITS's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.6). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. CONVERT UNITS sells 2 in-app purchases, starting at $0.99 per month. Railroad asks for nothing beyond the download.

UpkeepUpdate frequency

CONVERT UNITS ships an update weekly, Railroad daily. The most recent releases landed on October 20, 2026 and October 5, 2026 respectively.

Scorecard5 real differences · 5 level
CONVERT UNITS versus Railroad: the parameters behind the verdict, then further details
ParameterCONVERT UNITSRailroad
PriceFreeFree
Rating4.7 (1.4K ratings) — better—
Positive reviews75.8% of reviews—
Number of ratings1.4K — better—
Update frequencyWeeklyDaily — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better18.6
Further details — not scored
Size22 MB1 MB
Age rating4+4+
DeveloperAdysseusMiddle Class Finance LLC

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

Railroad

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

CONVERT UNITS

Subscriptions1
  • Remove ads$0.991 Month
One-time1
  • Remove ads$19.99
None

Railroad

No in-app purchases

Questions

Is CONVERT UNITS free?
CONVERT UNITS is free to download, with in-app purchases available.
Is Railroad free?
Railroad is free to download, with no in-app purchases.
Do CONVERT UNITS or Railroad have ads?
CONVERT UNITS shows ads; Railroad does not.
Which is updated more often, CONVERT UNITS or Railroad?
CONVERT UNITS ships an update weekly, and Railroad daily. Most recently, CONVERT UNITS was updated on October 20, 2026 and Railroad on October 5, 2026.

Other comparisons