Comparison

Protern Clock vs Steer

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

Head to head
About

Protern Clock

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Protern Clock puts a precise time of day on every clip you film with a video camera, from the phone you already carry. A camera stamps each clip with its own clock: set once, drifting since, and only ever to the whole second. That is fine for watching. It is not enough to line the clip up with anything else: an athlete's sensor data, a second camera, or the phone footage from the top of the course. Protern Clock gives the camera a time it can trust, accurate to a hundredth of a second. TWO WAYS TO PUT THE TIME ON THE CAMERA LTC Audio. Plug the phone into the camera's mic input with a 3.5 mm cable, press Start, set the phone down beside the camera, and film. The phone sends the time as an audio timecode signal (linear timecode, or LTC, the broadcast standard) and the camera records it on the audio track. The timecode keeps running with the screen off. QR Clock. For a camera with no mic input. The phone shows the time as a QR code that refreshes every frame. Film the phone screen for a few seconds at the start of each clip, then the athlete. Protern Video reads the time from those frames. WHAT PROTERN VIDEO DOES WITH IT Import the clips and they behave like clips filmed on a phone. Each one sorts into the right session on the right day. It lines up with the athlete's Protern Sensor data to a hundredth of a second, so speed, time, and line sit on the frame they belong to. The run names itself when the athlete wore a sensor. And it joins other cameras and phones in one multi-cam run: a single feed that switches from camera to camera at the right instant, or angles side by side, in sync. PROTERN CLOCK AND TIMELINK TimeLink is Protern's LTC generator as a dedicated device, for the camera that films all day. Protern Clock puts the same timecode on the camera from your phone. Most teams use both: TimeLink on the main camera, Protern Clock on the second camera, the borrowed camera, or the camera with no mic input. SETTINGS Frame rate of 24, 25, 29.97, or 30. Timecode on the left, right, or both audio channels. The date embedded in the timecode. The time shows on screen while it runs, so you can check it against the camera. BEYOND PROTERN Any app that reads SMPTE linear timecode can use the signal, including Dartfish and Telemetry Overlay, so the same clip lines up with other sensor data in other analysis and overlay tools. REQUIREMENTS LTC Audio needs a wired 3.5 mm audio connection from the phone to the camera's mic input. An adapter may be needed depending on the phone. Bluetooth audio does not carry the timecode. QR Clock needs no cable. Reading QR Clock needs Protern Video 2.3.15 or later.

About

Steer

Transform your smartphone into a powerful OBD2 diagnostic tool. Read and clear fault codes, monitor real-time performance metrics, and test your vehicle's acceleration and emissions. Compatible with a wide range of car brands and OBD2 scanners.

Highlights
  • Universal OBD2 scanner compatibility
  • Read and erase fault codes
  • Real-time performance metrics
  • Acceleration and performance testing
  • Emission compliance checks
  • Supports various car brands
Features
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Your car has been trying to tell you something. Steer translates it. Plug the Steer sensor into the port under your steering wheel and the app reads what your car already knows โ€” then explains it the way an honest mechanic would: in plain language, with no jargon and nothing to upsell you. WHAT YOU GET: โ–  AI MECHANIC Ask anything about your car and get a straight answer. Send a photo of a warning light, a leak on the driveway or a part you don't recognize, or just describe the noise it makes. It knows your exact car and your latest scan. โ–  ONE NUMBER, 0 TO 100 Your Steer Score answers "how is my car right now?". No trouble codes to look up, no tables to read. Watch it move over time. โ–  PROBLEMS IN PLAIN LANGUAGE Every issue comes with what it means, whether it is safe to keep driving, and what the repair usually costs. Not "P0420 โ€” Catalyst System Efficiency Below Threshold". โ–  DEEP SCAN 21 systems and 126 live parameters, across every module your car will talk to. Start it, lock your phone, and get a notification when it is done. โ–  DASHBOARD LIGHT LIBRARY Every warning light on your dashboard โ€” check engine, ABS, airbag, TPMS, oil, battery โ€” what it actually means, and how urgent it really is. โ–  MAINTENANCE THAT KNOWS YOUR CAR Service intervals based on your VIN and your real mileage, not a generic checklist. Oil changes, filters, brakes, belts. โ–  SAFETY RECALLS We check your VIN against the manufacturer recall database and tell you if your car is affected. โ–  EVERY OBD2 CAR SINCE 1996 80 makes and thousands of models, 1996 to 2026. TRY IT BEFORE YOU BUY Open the app and tap "Try a real scan". You get the whole experience on a demo car โ€” scan, results, AI Mechanic โ€” with no sensor, no account and no card. WHAT YOU NEED Steer works with the Steer OBD2 sensor, available at steer.so. It is not compatible with third-party adapters. MEMBERSHIP Free forever: live codes, battery alerts and basic diagnosis. Steer Plus unlocks the unlimited AI Mechanic, full explanations for every issue, predictive maintenance and every car in the household โ€” $99/year with a 14-day free trial, or $14.99/month. Terms of Use: https://steer.so/terms Privacy Policy: https://steer.so/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Protern Clock4 screens
Steer4 screens

Verdict

The call

The clearest difference is price: Steer at Free against Protern Clock's $9.99. Steer also leads on update cadence (every 2 months vs every 6 months). Protern Clock's advantage is in-app purchases (none vs 2) and iOS requirement (16.1 vs 26.1). On ads and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Steer is free to download; Protern Clock costs $9.99 up front. Steer sells 2 in-app purchases, starting at $9.99 per month. Protern Clock asks for nothing beyond the download.

UpkeepUpdate frequency

Protern Clock ships an update every 6 months, Steer every 2 months. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

Scorecard4 real differences ยท 4 level
Protern Clock versus Steer: the parameters behind the verdict, then further details
ParameterProtern ClockSteer
Price$9.99Free โ€” better
Positive reviewsโ€”26.7% of reviews
Update frequencyEvery 6 monthsEvery 2 months โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
Monetizationโ€”Freemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.1 โ€” better26.1
Further details โ€” not scored
Size27 MB26 MB
Age rating4+4+
DeveloperProskidaSmarters Engineered

In-app purchases

None

Protern Clock

No in-app purchases

2 purchases

Steer

Subscriptions2
  • OBD2 Pro$9.991 Month
  • OBD2 Pro$19.991 Year

Questions

Is Protern Clock free?
Protern Clock costs $9.99, with no in-app purchases.
Is Steer free?
Steer is free to download, with in-app purchases available.
Do Protern Clock or Steer have ads?
Neither Protern Clock nor Steer shows ads.
Which is updated more often, Protern Clock or Steer?
Protern Clock ships an update every 6 months, and Steer every 2 months. Most recently, Protern Clock was updated on October 27, 2026 and Steer on October 31, 2026.

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