Comparison

IMPULSE Wireless vs OPSWAT SDP

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

Head to head
About

IMPULSE Wireless

Read full description

IMPULSE Wireless provides the ultimate in instant two-way communications, and more. Real time push-to-talk/PTT/PoC over 3G and 4G/LTE networks, any carrier, anywhere in the world. Please contact us on 02 8705 3778 or http://www.impulsewireless.com.au/contact-us/ to activate your free trial and to get set up - no payment details required. - Group calls - 1-1 calls - Ad-hoc calls - Group Text Messaging - Individual Text messaging - User priority (pre-emption or Transmit Interrupt) - Priority broadcast calls - User presence/status - GPS tracking - Use accessories or customised devices for the ultimate in ease of use - Integrate with existing radio systems for a seamless transition Integrate your communications solution with job dispatch, email, and other functions to increase productivity. Don't carry a radio, use your phone as a radio and enjoy better coverage and more features. Our Bluetooth remote speaker microphones provide ease of use and flexibility. User activation is required to use this application, but no payment details are required for a free trial. We offer you a fully comprehensive support service and complete flexibility for your devices. Note: This app may use your location even when it isn’t open, which can decrease device battery life. Please contact us at www.impulsewireless.com.au/contact-us for further details and to get started with a free trial.

About

OPSWAT SDP

Features
Read full description

Intended for use with the OPSWAT Mobile App, see https://apps.apple.com/us/app/opswat-mobile-app/id1037540857. OPSWAT's Secure Access solution for the MetaAccess Platform ensures that access from your device to your organization's applications is secure, whether connecting from the office, home or other remote locations, using our patented VPN technology. With SDP you will increase security by darkening visibility to your protected applications, and ensuring that the SDP VPN only connects to authorized user services.

Screenshots

IMPULSE Wireless2 screens
OPSWAT SDP3 screens

Verdict

The call

The clearest difference is update cadence: IMPULSE Wireless at every 2 months against OPSWAT SDP's every 6 months. OPSWAT SDP's advantage is iOS requirement (13.0 vs 16.1). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

IMPULSE Wireless ships an update every 2 months, OPSWAT SDP every 6 months. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

Scorecard2 real differences Β· 4 level
IMPULSE Wireless versus OPSWAT SDP: the parameters behind the verdict, then further details
ParameterIMPULSE WirelessOPSWAT SDP
PriceFreeFree
Update frequencyEvery 2 months β€” betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod β€” better
Requires iOS16.113.0 β€” better
Further details β€” not scored
Size20 MB62 MB
Age rating17+4+
DeveloperInvisible CommunicationsOPSWAT

In-app purchases

None

IMPULSE Wireless

No in-app purchases

None

OPSWAT SDP

No in-app purchases

Questions

Is IMPULSE Wireless free?
IMPULSE Wireless is free to download, with no in-app purchases.
Is OPSWAT SDP free?
OPSWAT SDP is free to download, with no in-app purchases.
Do IMPULSE Wireless or OPSWAT SDP have ads?
Neither IMPULSE Wireless nor OPSWAT SDP shows ads.
Which is updated more often, IMPULSE Wireless or OPSWAT SDP?
IMPULSE Wireless ships an update every 2 months, and OPSWAT SDP every 6 months. Most recently, IMPULSE Wireless was updated on October 26, 2026 and OPSWAT SDP on October 30, 2026.

Other comparisons