Comparison

T15 Controller vs CTT Mobile

Price, ratings, monetisation and update history for both apps, side by side — 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.   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

CTT Mobile

Monitor real-time telemetry from your CTT devices. Adjust device duty cycles and connect to Bluetooth-enabled products like the Sidekick and Node Version 3.

Highlights
  • View latest telemetry data
  • Assign device duty cycle changes
  • Connect to Bluetooth enabled CTT products
  • Monitor Sidekick and Node Version 3
Features
Read full description

CTT Mobile allows you to view the latest telemetry data from your CTT devices on your mobile device. In addition you can use CTT Mobile to assign device duty cycle changes and connect to Bluetooth enabled CTT products such as the Sidekick and Node Version 3.

Screenshots

T15 Controller2 screens

Verdict

The call

The clearest difference is update cadence: CTT Mobile at every 2 months against T15 Controller's every 9 months. T15 Controller's advantage is iOS requirement (11.3 vs 13.0). 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

T15 Controller ships an update every 9 months, CTT Mobile every 2 months. The most recent releases landed on September 28, 2026 and September 29, 2026 respectively.

Scorecard2 real differences · 8 level
T15 Controller versus CTT Mobile: the parameters behind the verdict, then further details
ParameterT15 ControllerCTT Mobile
PriceFreeFree
Rating—5.0 (7 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—7 — better
Update frequencyEvery 9 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS11.3 — better13.0
Further details — not scored
Size10 MB59 MB
Age rating4+4+
DeveloperAdvanced Telemetry Systems, Inc.Cellular Tracking Technologies

In-app purchases

None

T15 Controller

No in-app purchases

None

CTT Mobile

No in-app purchases

Questions

Is T15 Controller free?
T15 Controller is free to download, with no in-app purchases.
Is CTT Mobile free?
CTT Mobile is free to download, with no in-app purchases.
Do T15 Controller or CTT Mobile have ads?
Neither T15 Controller nor CTT Mobile shows ads.
Which is updated more often, T15 Controller or CTT Mobile?
T15 Controller ships an update every 9 months, and CTT Mobile every 2 months. Most recently, T15 Controller was updated on September 28, 2026 and CTT Mobile on September 29, 2026.

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