Comparison

T15 Controller vs NAL SHOUT

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

Head to head
About

T15 Controller

Features
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Using the 'T15 Controller' app on their iPhone, user can now turn 'on' (activate) or turn 'off' (deactivate) their miniature T15 radio frequency transmitter. Previously, either external magnets (for reed switch on/off control) or a separate light control box were necessary. Β  The pulses of light transmitted by the iPhone's camera flash contain an embedded code that only T15 transmitters understand. Because the LED flash is so bright and the code is very complex there is no worry that the T15 transmitters will be accidentally receive a command via any other indoor or outdoor light source. In order to reduce the size of the T15 wildlife tracking transmitter (to the smallest size telemetry transmitter in the world) conventional activation and deactivation devices (such as magnetically controlled reed switches) had to be abandoned. This also gives biologists the added convenience of being able to control their T15 transmitters with a device that is normally with them all of the time...their iPhone!

About

NAL SHOUT

Features
Read full description

The SHOUT app connects the SHOUT nano 100 and SHOUT ns trackers to your phone’s Bluetooth! This App allows complete configuration, control and monitoring of the SHOUT nano 100 and SHOUT ns tracking / messaging devices. The SHOUT can be connected to your smart phone via Bluetooth for two-way messaging and device parameter setting. Configure periodic β€˜wake up’ to send position reports to your command center monitoring station. Send free-text and canned messages to other NAL devices or Email Accounts. Broadcast immediate alert notifications including your current position. Features: Texting - Compose, send, receive, written messages to other Iridium based communication devices as well as standard Email accounts - Select from lists of predefined contacts and canned messages - Configure Incoming Message Checks to impact SHOUT device battery performance Tracking - Configure Geofence arrival and departure parameters to send automatic position reports - Select Formats for report transmissions - Send / cancel immediate alert notifications with your current position Utilities - Real time check of the Iridium signal being received by your device - Real time check of the GPS signal being received by your device - Immediate β€˜Check In’ of your current position to your monitoring station

Screenshots

T15 Controller2 screens
NAL SHOUT3 screens

Verdict

The call

The clearest difference is update cadence: NAL SHOUT at monthly against T15 Controller's every 9 months. 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

T15 Controller ships an update every 9 months, NAL SHOUT monthly. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

Scorecard1 real difference Β· 5 level
T15 Controller versus NAL SHOUT: the parameters behind the verdict, then further details
ParameterT15 ControllerNAL SHOUT
PriceFreeFree
Update frequencyEvery 9 monthsMonthly β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS11.3 β€” better12.0
Further details β€” not scored
Size10 MB6 MB
Age rating4+4+
DeveloperAdvanced Telemetry Systems, Inc.NAL Research Corporation

In-app purchases

None

T15 Controller

No in-app purchases

None

NAL SHOUT

No in-app purchases

Questions

Is T15 Controller free?
T15 Controller is free to download, with no in-app purchases.
Is NAL SHOUT free?
NAL SHOUT is free to download, with no in-app purchases.
Do T15 Controller or NAL SHOUT have ads?
Neither T15 Controller nor NAL SHOUT shows ads.
Which is updated more often, T15 Controller or NAL SHOUT?
T15 Controller ships an update every 9 months, and NAL SHOUT monthly. Most recently, T15 Controller was updated on October 14, 2026 and NAL SHOUT on October 13, 2026.

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