CLTagViewer vs GPS Race Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CLTagViewer
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CLTagViewer will read all the global tags from a ControlLogix PLC. Just enter the IP address of the PLC rack ethernet card and then the number of the slot that has a ControlLogix processor. First it reads all the tags that are defined, then it reads all the templates for any user defined types (UDT's). Once it has finished reading all the templates you can check the "Monitor Values" switch and it will then read and display the values of the tags currently visible. Works with Allen-Bradley ControlLogix PLC processors and racks manufactured by Rockwell automation. Privacy Policy - The developer does not collect any data from this app - https://www.controlplus.biz/priv.pdf Terms of Use - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
GPS Race Timer
Accurately measure vehicle acceleration times like 0-60 mph and 1/4 mile using your iPhone's GPS. Set up timers beforehand and let the app automatically start measurements when speed targets are met or motion is detected. Save, export, and transfer your performance data easily.
- Measure 0-60 mph, 60-120 mph, 1/4 mile
- Automatic start detection
- Save and export results
- Preset and adjustable timers
- No extra hardware required
- Optional PRO version features
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Measure acceleration times such as 0–60 mph, 60–120 mph and 1/4 mile directly with your iPhone — accurately and without extra hardware. The app is designed so it doesn’t need to be operated while driving; you just set everything up beforehand while stationary. Measurements then start automatically — when the target speed is reached or when a start is detected. You can save results locally on your iPhone and, if needed, export them or transfer them to other devices. Preset timers: 60 ft, 1/8 mile, 1/4 mile, 1/2 mile, 1 mile, 0 – 60 mph, 0 – 120 mph, 50 – 75 mph, 60 – 120 mph, 0 – 100 km/h, 0 – 200 km/h, 80 – 120 km/h, 100 – 200 km/h. All timers are, of course, fully adjustable. The free version measures up to two times per run. How to use the app: Check the timer settings on the start screen. If everything looks good, place your iPhone in the car where it has good GPS reception and is held securely, then start the acceleration test. You can adjust the timer configuration in the Settings screen (just tap the relevant timer). Then return to the race screen and follow the previous instruction. Optional PRO version (in-app purchase): 1. Up to four timers in parallel (instead of two) 2. Precise determination of elevation differences 3. Simulation of a Sportsman start and reaction-time measurement 4. No ad banners
Screenshots
Verdict
The clearest difference is ads: CLTagViewer at none against GPS Race Timer's shown. GPS Race Timer's advantage is update cadence (every 7 months vs every 19 months) and iOS requirement (12.2 vs 16.6). On price, 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
Both are free to download. CLTagViewer sells 1 one-off in-app purchase and GPS Race Timer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
CLTagViewer ships an update every 19 months, GPS Race Timer every 7 months. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.
| Parameter | CLTagViewer | GPS Race Timer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (2.7K ratings) — better |
| Positive reviews | — | 34.4% of reviews |
| Number of ratings | — | 2.7K — better |
| Update frequency | Every 19 months | Every 7 months — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 16.6 | 12.2 — better |
| Further details — not scored | ||
| Size | 2 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Control Plus Pty. Ltd | Thomas Hagenau |
Bugs and requests
CLTagViewer
Not enough reviews yet to summarise bugs or requests.
GPS Race Timer
Reported bugs
4 issues- Timer doesn't reset properly
- App crashes on startup
- Significant GPS/speed detection delays
- Recorded times do not match actual performance
Requested features
4 requests- Add 60ft and 1/8 mile times
- Automatic start/stop of timer
- Manual start option for timer
- Improved accuracy and consistency
In-app purchases
CLTagViewer
- CLTagViewer V2 Purchase$1.99
GPS Race Timer
- PRO$4.99
Questions
Is CLTagViewer free?
Is GPS Race Timer free?
Do CLTagViewer or GPS Race Timer have ads?
Which is updated more often, CLTagViewer or GPS Race Timer?
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