Comparison

LED Resistor Calculator & SMD vs Resistor Color Code Reader

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

Head to head
About

LED Resistor Calculator & SMD

Features
Read full description

LED Resistor Calculator & SMD is a practical electronics utility designed to help calculate the correct resistor value for LEDs and identify SMD resistor codes with ease. It is ideal for students, electronics hobbyists, technicians, and engineers working with LED circuits. The app helps prevent LED damage by calculating proper resistor values based on voltage and current. It also includes SMD resistor code identification to simplify component selection during circuit design and repair. Key Features: LED resistor value calculation Supports common LED voltage and current inputs SMD resistor code identification Clear and accurate calculation results Simple and easy-to-use interface Useful for electronics learning and projects LED Resistor Calculator & SMD is a reliable companion for electronics design, troubleshooting, and educational use, helping you work with LEDs and resistors more confidently. in-app purchase included Lifetime to Remove Ads Privacy Policy : https://semiconhub.in/manager/privacy.html Terms and Condition : https://semiconhub.in/manager/tcondition.html

About

Resistor Color Code Reader

Features
Read full description

Read any resistor in seconds. Tap the bands as you see them on the component and the value appears instantly, with its tolerance and the range the part is actually guaranteed to fall in. Type a value instead and the app shows you which bands print it. FOUR, FIVE AND SIX BANDS A 4-band resistor carries two significant digits and a 5-band carries three, so the same colours mean different things on different parts. Most apps quietly assume one format. This one asks, and switching between them keeps the value you already have. GOLD AND SILVER ARE MULTIPLIERS TOO Not just tolerances. Without them every sub-ohm resistor is unreadable, and a surprising number of calculators cannot read one. THE BENCH TOOLS Unlock surface-mount decoding for 3-digit, 4-digit, R-notation and EIA-96 markings โ€” including the one genuinely ambiguous case, where the app names both readings instead of guessing. Snap any value to the nearest E6, E12, E24, E48 or E96 preferred value and see how far off it is. Add up a handful of resistors in series and in parallel. WRITTEN THE WAY YOU WRITE IT Type 4k7, 4.7k, 4700, 470R or R47 โ€” all of them parse, along with a comma decimal mark and Arabic and Persian numerals. NO ACCOUNT. NO INTERNET NEEDED. NO TRACKING. Everything is calculated on your phone. Nothing is uploaded anywhere, and the app makes no network requests at all.

Screenshots

LED Resistor Calculator & SMD4 screens
Resistor Color Code Reader4 screens

Verdict

The call

The clearest difference is update cadence: Resistor Color Code Reader at every 4 weeks against LED Resistor Calculator & SMD's every 4 months. LED Resistor Calculator & SMD's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On price, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. LED Resistor Calculator & SMD sells 1 one-off in-app purchase and Resistor Color Code Reader sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

LED Resistor Calculator & SMD ships an update every 4 months, Resistor Color Code Reader every 4 weeks. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

Scorecard3 real differences ยท 3 level
LED Resistor Calculator & SMD versus Resistor Color Code Reader: the parameters behind the verdict, then further details
ParameterLED Resistor Calculator & SMDResistor Color Code Reader
PriceFreeFree
Update frequencyEvery 4 monthsEvery 4 weeks โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS13.0 โ€” better16.4
Further details โ€” not scored
Size60 MB58 MB
Age rating+44+
DeveloperSachinbhai SuraniRavinderjeet Dhillon

In-app purchases

1 purchases

LED Resistor Calculator & SMD

One-time1
  • Lifetime premium$12.99
1 purchases

Resistor Color Code Reader

One-time1
  • Workbench Tools$3.99

Questions

Is LED Resistor Calculator & SMD free?
LED Resistor Calculator & SMD is free to download, with in-app purchases available.
Is Resistor Color Code Reader free?
Resistor Color Code Reader is free to download, with in-app purchases available.
Do LED Resistor Calculator & SMD or Resistor Color Code Reader have ads?
Neither LED Resistor Calculator & SMD nor Resistor Color Code Reader shows ads.
Which is updated more often, LED Resistor Calculator & SMD or Resistor Color Code Reader?
LED Resistor Calculator & SMD ships an update every 4 months, and Resistor Color Code Reader every 4 weeks. Most recently, LED Resistor Calculator & SMD was updated on October 12, 2026 and Resistor Color Code Reader on October 24, 2026.

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