Comparison

i41CX vs SMART GIS

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

Head to head
About

i41CX

This app offers a powerful RPN scientific calculator experience, functionally equivalent to a renowned model. It provides extensive memory registers, over 300 built-in functions, and programmability. Advanced features can be unlocked via in-app purchases.

Highlights
  • RPN logic with 4-element stack
  • 319 main and 124 extended memory registers
  • Over 300 built-in functions
  • Programmable up to 2000 lines
  • User-definable keyboard
  • Bluetooth keyboard support
  • Device integration features
Read full description

i41CX is the same powerful advanced programmable RPN scientific calculator as the highly acclaimed i41CX+ but without the latter’s incredibly advanced capabilities such as the printer, expansion, CAS, etc. It is functionally equivalent to the world-renowned HP-41CX and inherits all of the i41CX+ usability features including extremely responsive and animated key clicks, audible key feedback sounds, optimally spaced keys for accurate input, traditional and upbeat modern diverse set of skins, etc. If you are looking for a powerful programmable RPN scientific calculator but don’t need all of the capabilities of i41CX+ then i41CX is for you. And best of all, if you ever decide that you need the more advanced capabilities of i41CX+ you can enable them using secure in-app purchases right within the app! FEATURES: • RPN logic with a 4 element deep memory stack • 319 main and 124 extended memory registers • Over 300 built-in functions, including nearly 100 functions created specifically for i41CX • Time, calendar, alarm, and stopwatch functions • Rich set of functions and algorithms: numerical, mathematical, statistical, and much more • Access to the entire HP-41 library of solutions for science, mathematics, statistics, engineering, business, financial, surveying, medicine, real estate, and many other domains • Programmable - Over 2000 lines • User definable keyboard • Ability to operate the calculator using a Bluetooth keyboard • Device integration: external display mirroring, copy and paste, GPS, accelerometer, digital compass, time and date synchronization, and much more • iOS 8 Notification Center widget • Sound support including synthetic tones and interface sounds • Support for calculator skins and optional mini stack display • Adjustable sound volume and display colors • Usage & Examples table with usage tips and examples • Quick reference guide of all built-in functions • Beautiful and clean user interface *********************************************************** A comprehensive FAQ is available at http://alsoftiphone.com/i41CX. Please don't hesitate to use the "Contact Us" link there if you cannot find the answers or information that you seek. Thank you.

About

SMART GIS

This application provides an advanced geographical information system for efficient infrastructure management. It allows users to visualize assets, buildings, and technicians on an interactive map for real-time monitoring and reporting of issues.

Highlights
  • Interactive map view of buildings, assets, and technicians
  • Complaint raising and management
  • Hazard reporting and visual highlighting
  • Color-coded building types
  • Complaint insights with asset and technician assignments
Features
Read full description

Smart GIS is an advanced geographical information system designed to streamline infrastructure management. Visualize buildings, assets, and technicians directly on the map for real-time monitoring. Key Features: Interactive Map View: View all buildings, assets, and technicians on an intuitive map interface. Complaint Management: Raise and manage complaints against buildings and assets effortlessly. Track complaint status and ensure timely resolution. Hazard Reporting: Report hazards against buildings, which are visually highlighted for easy identification and swift action. Building Type Differentiation: Buildings are color-coded based on their type, providing a clear and organized view. Complaint Insights: View building complaints, associated asset issues, and technician assignments for effective resolution. Empower your management operations with Smart GIS — making infrastructure monitoring smarter and more efficient. Download now and experience seamless asset management!

Screenshots

i41CX4 screens
SMART GIS4 screens

Verdict

The call

The clearest difference is review sentiment: i41CX at 90% against SMART GIS's 0%. i41CX also leads on rating (4.6 vs 1.0) and ratings volume (45 vs 1). SMART GIS's advantage is price (Free vs $7.99) and in-app purchases (none vs 4). On update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

SMART GIS is free to download; i41CX costs $7.99 up front. i41CX sells 4 one-off in-app purchases. SMART GIS asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

i41CX holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: i41CX has 45 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 90% of i41CX's written reviews are positive against 0% of SMART GIS's.

UpkeepUpdate frequency

i41CX ships an update weekly, SMART GIS every 2 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 3 level
i41CX versus SMART GIS: the parameters behind the verdict, then further details
Parameteri41CXSMART GIS
Price$7.99Free — better
Rating4.6 (45 ratings) — better1.0 (1 ratings)
Positive reviews90.5% of reviews — better0.0% of reviews
Number of ratings45 — better1
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.012.0 — better
Further details — not scored
Size135 MB55 MB
Age rating4+4+
DeveloperAntonio LaganaNanosoft Engineers India Private Limited

Customer experience

i41CX

All ratings45 ratings
Positive91.1%
Neutral2.2%
Negative6.7%
Written reviews126 reviews
Positive90.5%
Neutral3.2%
Negative6.3%

SMART GIS

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

4 purchases

i41CX

One-time4
  • Overlays Upgrade$2.99
  • Printer Upgrade$3.99
  • CAS Upgrade$7.99
Show 1 more
  • i41CX+ Features Upgrade$17.99
None

SMART GIS

No in-app purchases

Questions

Is i41CX free?
i41CX costs $7.99, and also offers in-app purchases.
Is SMART GIS free?
SMART GIS is free to download, with no in-app purchases.
Which has better reviews, i41CX or SMART GIS?
i41CX is rated higher. i41CX averages 4.6 out of 5 from 45 ratings, while SMART GIS averages 1.0 from 1 ratings.
Do i41CX or SMART GIS have ads?
Neither i41CX nor SMART GIS shows ads.
Which is updated more often, i41CX or SMART GIS?
i41CX ships an update weekly, and SMART GIS every 2 weeks. Most recently, i41CX was updated on October 26, 2026 and SMART GIS on October 24, 2026.

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