Comparison

iRTCConnect vs SD

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

Head to head
About

iRTCConnect

This app connects to school zone flasher systems via Bluetooth, allowing remote programming, timing adjustments, and relay control. It also displays directions to timeswitch locations on a map.

Highlights
  • Bluetooth connectivity
  • Remote programming
  • Timing adjustments
  • Clock read/write
  • Manual relay control
  • Map directions to devices
Features
Read full description

This APP is intended to be used with RTC Manufacturing school zone flasher systems. The APP will allow you to: > Connect to field devices directly through Bluetooth adapter placed on the timeswitch. This allows you to program the device from up to 40 feet away. > Change timing for storms or special events. > Read and write the clocks in the field. > Examine programming. > Manual control a relay on or off. > Show directions from users current position on map to any timeswitch location. You can use your agencyname / username and password in order to use this APP. Please email appsupport@rtc-traffic.com for any information or help. Thank you RTC Manufacturing 817 860 1217

About

SD

Features
Read full description

Access Your TDC 2 From the Palm of Your Hand. The SD:TDC 2 app allows you to quickly access your Stalker Street Dynamics TDC 2 (Traffic Data Collector 2) to assist in installation and monitoring of the battery and memory status. Now from the safety of your service vehicle, you can view your current traffic count, check remaining battery power, or change data collection dates- all on your short-range wireless-capable phone. ………………………… APP FEATURES: - See real-time traffic detection for validating installation - View cumulative statistics for the current survey - View device 4G connection status (if equipped) and GPS information - Determine how much longer the current survey can run on available power - Setup a schedule for when survey should be active - Reset the TDC 2 to factory defaults

Screenshots

iRTCConnect4 screens
SD4 screens

Verdict

The call

The clearest difference is update cadence: SD at every 3 weeks against iRTCConnect's every 6 months. On price, ads, in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

iRTCConnect ships an update every 6 months, SD every 3 weeks. The most recent releases landed on June 20, 2026 and May 19, 2026 respectively.

Scorecard1 real difference · 8 level
iRTCConnect versus SD: the parameters behind the verdict, then further details
ParameteriRTCConnectSD
PriceFreeFree
Rating4.7 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 6 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size3 MB10 MB
Age rating4+17+
DeveloperRTC Manufacturing Inc.Applied Concepts Incorporated

In-app purchases

None

iRTCConnect

No in-app purchases

None

SD

No in-app purchases

Questions

Is iRTCConnect free?
iRTCConnect is free to download, with no in-app purchases.
Is SD free?
SD is free to download, with no in-app purchases.
Do iRTCConnect or SD have ads?
Neither iRTCConnect nor SD shows ads.
Which is updated more often, iRTCConnect or SD?
iRTCConnect ships an update every 6 months, and SD every 3 weeks. Most recently, iRTCConnect was updated on June 20, 2026 and SD on May 19, 2026.

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