Comparison

Resistor Plus vs Landmarks

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

Head to head
About

Resistor Plus

Easily calculate resistor values and tolerance using color codes. Simply select the colors for each band, and the app instantly displays the resistance in ohms. Save your results with screenshots for future reference.

Highlights
  • Resistor color code calculation
  • Tolerance calculation
  • Instant results display
  • Copy result functionality
  • Screenshot capability
  • Works on iPhone and iPad
  • Ad-free and private
Features
Read full description

Resistor Calculator is the essential tool for electronics engineers, hobbyists, makers, and students. Instantly decode resistor color bands, calculate circuit values, and look up standard resistor values — all in one app. RESISTOR COLOR CODE CALCULATOR • Support for 4-band, 5-band, and 6-band resistors • Tap color bands on a realistic resistor graphic to read values instantly • View resistance, tolerance, min/max range, and temperature coefficient • Intuitive color picker with all standard EIA color codes REVERSE LOOKUP • Enter a resistance value and get the matching color band combination • Find the closest standard value from E-series tables • Perfect for designing circuits and selecting components SERIES & PARALLEL CALCULATOR • Calculate total resistance for resistors in series or parallel • Add unlimited resistors with engineering notation input (e.g. 4.7k, 2.2M) • See live results with formula reference VOLTAGE DIVIDER • Solve for output voltage (Vout) or unknown resistor (R2) • Interactive circuit diagram updates in real time • Supports engineering notation for quick input E-SERIES REFERENCE LIBRARY • Browse standard resistor values from E12, E24, E48, E96, and E192 series • Search and filter values instantly • Tap to copy any value to clipboard DESIGNED FOR ENGINEERS • Clean, distraction-free interface • Works on iPhone and iPad • No ads, no subscriptions, no internet required • Haptic feedback for a responsive experience Whether you are building your first LED circuit or designing professional PCBs, Resistor Calculator Pro gives you fast, accurate answers right on your device. Download now and keep the most useful resistor tool in your pocket. Resistor Parameters: Band Digit Black - 0 Brown - 1 Red - 2 Orange - 3 Yellow - 4 Green - 5 Blue - 6 Violet - 7 Grey - 8 White - 9 Band Multiplier Black × 1 Ω Brown × 10 Ω Red × 100 Ω Orange × 1 kΩ Yellow × 10 kΩ Green × 100 kΩ Blue × 1 MΩ Violet × 10 MΩ Gold × 0.1 Ω Silver × 0.01 Ω Band Tolerance Brown - 1% Red - 2% Gold - 5% Silver - 10% A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, divide voltages, bias active elements, and terminate transmission lines, among other uses. A resistor opposes the flow of electrical current; the higher the value of the resistor, the more it opposes the current flow. Values are given in ohms. Thank you for your support! Visit nitrio.com for more apps for your iOS devices.

About

Landmarks

Explore over 600 iconic global landmarks in 3D interactive cityscapes. Discover tourist attractions, museums, and more with curated tours and engaging quizzes. Save favorites and earn achievements while learning about famous sights.

Highlights
  • 3D interactive landmark exploration
  • Over 600 global landmarks
  • Curated city tours
  • Engaging quizzes
  • Save favorite locations
  • Daylight and moonlight themes
Features
Read full description

Landmarks brings the world’s most iconic places to life. Powered by Apple Maps, the app lets you explore over 600 interactive landmarks across 40+ major cities worldwide through immersive and beautifully detailed interactive cityscapes. Browse curated city tours or dive into categories like tourist attractions, museums, theaters, churches, and stadiums. Fly over iconic places like the Louvre, the Golden Gate Bridge, the Empire State Building, Buckingham Palace, and the Basilica of the Sagrada Família. Save your favorites, revisit top destinations, and earn achievements as you go. Learn about landmarks as you explore, switch between daylight and moonlight themes, view useful location details, and use your device’s built-in gyroscope for an even more immersive perspective. With the new Quizzes feature, Landmarks becomes even more engaging. Test your knowledge, discover new places, and learn more about famous sights around the world in a playful new way. Landmarks is available on iOS, iPadOS, macOS, visionOS, and tvOS. Featured landmarks may appear differently depending on device. The app’s collection is updated regularly as new Apple Maps Detailed City Experience models become available. Some content and features require an active World Pass plan. ——— Privacy policy: landmarks.foyerobjet.com/privacy Terms of use: landmarks.foyerobjet.com/terms

Screenshots

Resistor Plus4 screens
Landmarks4 screens

Verdict

The call

The clearest difference is review sentiment: Landmarks at 67% against Resistor Plus's 0%. Landmarks also leads on price (Free vs $2.99) and update cadence (every 3 weeks vs every 20 months). Resistor Plus's advantage is in-app purchases (none vs 7) and iOS requirement (16.6 vs 26). On ads 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

Landmarks is free to download; Resistor Plus costs $2.99 up front. Landmarks sells 7 in-app purchases, starting at $1.99 per 7 days. Resistor Plus asks for nothing beyond the download.

UpkeepUpdate frequency

Resistor Plus ships an update every 20 months, Landmarks every 3 weeks. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.

Scorecard7 real differences · 3 level
Resistor Plus versus Landmarks: the parameters behind the verdict, then further details
ParameterResistor PlusLandmarks
Price$2.99Free — better
Rating—4.7 (91 ratings) — better
Positive reviews0.0% of reviews66.7% of reviews — better
Number of ratings—91 — better
Update frequencyEvery 20 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad, Mac, Apple TV, Vision Pro — better
Requires iOS16.6 — better26
Further details — not scored
Size1 MB183 MB
Age rating4+4+
DeveloperNitrioFoyer Objet Inc.

Customer experience

Resistor Plus

Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Landmarks

All ratings91 ratings
Positive92.3%
Neutral1.1%
Negative6.6%
Written reviews27 reviews
Positive66.7%
Neutral3.7%
Negative29.6%

In-app purchases

None

Resistor Plus

No in-app purchases

7 purchases

Landmarks

Subscriptions2
  • World Pass (Week)$1.997 Days
  • World Pass (Year)$6.991 Year
One-time5
  • Landmarks Supporter$2.99
  • Landmarks Patron$4.99
  • Landmarks Champion$7.99
Show 2 more
  • World Pass (Lifetime)$24.99
  • Landmarks Access$39.99

Questions

Is Resistor Plus free?
Resistor Plus costs $2.99, with no in-app purchases.
Is Landmarks free?
Landmarks is free to download, with in-app purchases available.
Do Resistor Plus or Landmarks have ads?
Neither Resistor Plus nor Landmarks shows ads.
Which is updated more often, Resistor Plus or Landmarks?
Resistor Plus ships an update every 20 months, and Landmarks every 3 weeks. Most recently, Resistor Plus was updated on October 2, 2026 and Landmarks on October 14, 2026.

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