Comparison

SmPay vs Optical Toolkit

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

Head to head
About

SmPay

Features
Read full description

SmPay is a payment app designed exclusively for Jalanidhi Projects. SmPay is a simple and secure payments app by Workmate that can be used to pay water bills. SmPay allows you to use BHIM UPI, your credit card and debit card or wallet to pay your water bills. You can also know your bill details, register your complaints and communicate with committee members and get announcement if any interruption occuring in water supply. The SmPay app is integrated with Razorpay payment gateway ,meets all your payment requirements. Razorpay Checkout offers multiple payment methods, allowing your the flexibility to complete the payment using the payment method of your choice. Refunds will be sent back to the original payment method used in making the payment. For example, if a credit card was used to make the payment, the refund will be pushed to the same credit card. Depending on the bank's processing time, it can take 5-7 business days for the refunds to reflect in the customer's bank account or card balance

About

Optical Toolkit

Features
Read full description

The Optical Toolkit is a professional reference app for optical networking engineers โ€” the calculators, quick conversions, reference data, and OTDR trace handling you reach for every day, in one place that works fully offline. WHY THIS APP EXISTS It came from personal need. As a working optical engineer I kept needing a quick OSNR check, a unit conversion, a standards value, or a fast look at a .sor trace โ€” and kept reaching for scattered spreadsheets, PDFs, and laptop tools. So I built the toolkit I wanted in my own pocket, and I am sharing it free so every engineer, student, and enthusiast who works with fiber can take advantage of it. CALCULATORS โ€” 47 TOOLS Link design: OSNR span design with FEC presets, EOL budget, nonlinear phase, Raman hybrid noise figure, GOSNR combining, rise-time budget, SBS/SRS thresholds, fiber mode and cutoff, extinction-ratio penalty, and Shannon capacity with modulation targets. DWDM: coherent rate and OSNR planning, guard-band planning with vendor rules, channel capacity by band, and ITU grid tools. Converters: dBm/mW, OSNR/SNR, wavelength/frequency, and more. Every input carries units, ranges, and engineering presets; results include pass/fail verdicts and margins. OTDR TRACES ON YOUR PHONE Open .sor trace files directly. The reader decodes fixed parameters, key events, and data points, draws the trace with color-coded event markers, and produces an analysis report: span length, total loss, ORL, event classification against thresholds, and recommendations. FULL REFERENCE LIBRARY 59 reference tables โ€” fiber standards (G.652 through G.657) side by side, coherent scaling laws, guard-band thumb rules, a channel quick database, transceiver formats โ€” plus a 394-term glossary, 427 alarm definitions with troubleshooting, 550 specification parameters, and a master search across everything. BUILT FOR THE FIELD Everything works offline โ€” airplane mode included. No account, no tracking, no analytics. SOR files are parsed on the device and never uploaded. Light and dark themes, adjustable fonts and text size, and favorites to pin the tools you use daily. Made by MapYourTech for optical, DWDM, and DCI engineers, students, and NOC teams.

Screenshots

SmPay4 screens
Optical Toolkit4 screens

Verdict

The call

The clearest difference is iOS requirement: SmPay at 13.0 against Optical Toolkit's 17.0. On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference ยท 5 level
SmPay versus Optical Toolkit: the parameters behind the verdict, then further details
ParameterSmPayOptical Toolkit
PriceFreeFree
Update frequencyEvery 2 weeksโ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 โ€” better17.0
Further details โ€” not scored
Size27 MB3 MB
Age rating4+4+
DeveloperWORKMATE INFOTECH PRIVATE LIMITEDSanjay Yadav

In-app purchases

None

SmPay

No in-app purchases

None

Optical Toolkit

No in-app purchases

Questions

Is SmPay free?
SmPay is free to download, with no in-app purchases.
Is Optical Toolkit free?
Optical Toolkit is free to download, with no in-app purchases.
Do SmPay or Optical Toolkit have ads?
Neither SmPay nor Optical Toolkit shows ads.

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