# Strobe Light Tachometer — user reviews > 76 indexed App Store user reviews of Strobe Light Tachometer by Motionics LLC, rated 4.20/5 from 276 ratings. - Source: https://appshunter.io/ios/app/strobe-light-tachometer/id978182913/reviews - App overview in markdown: https://appshunter.io/ios/app/strobe-light-tachometer/id978182913.md - Rating breakdown: 5★ 174 · 4★ 43 · 3★ 17 · 2★ 16 · 1★ 26 ## What do users think of Strobe Light Tachometer? Overall sentiment: mixed **Pros** - ✅ Accurate frequency and RPM measurements - 👍 Simple and user-friendly interface - 🎓 Excellent educational tool for teaching frequency concepts - 💰 Free application - ⚡ Quick and easy to use, even one-handed - 🎯 Effective for checking turntable, lathe, and fan speeds - 📱 Works well on most iPhone models - 🔧 Useful for professional HVAC and mechanical applications **Cons** - 💡 LED flash brightness is too dim - 🐛 Strobe light cuts out or blacks out intermittently - 🐛 Inconsistent and erratic flashing patterns - ⚠️ Hardware compatibility issues with older iPhone models - 🐛 Strobe stops working after extended use - 📺 Ads in the control interface - 🔌 LED flash may not be at maximum brightness setting - 🌞 Difficult to see in bright daylight conditions **Commonly reported bugs** - Strobe light cuts out every 2-3 seconds then resumes - LED flashes erratically on certain iPhone models (iPhone 14, iPhone XS, iPhone SE) - Strobe pulse is inconsistent and misses beats - App crashes or stops working after 20-30 minutes - Requires manual LED activation before starting strobe - Incompatibility error message on iPhone devices - Strobe accuracy degrades at higher frequencies (above 45 Hz) - Flash pulses vary in length and brightness at high frequencies - App shows "only compatible with iPhone" error on iPhone devices **Most requested features** - Ability to adjust brightness while strobe is running - Display accuracy specifications and hardware limitations - Option to set frequency by Hz in addition to RPM - Ability to specify number of fan blades for accurate RPM calculation - 2x and 1/2x multiplier options - Reduced or removed advertisements - Display maximum blink rate for device hardware ## Newest reviews (10 of 76) ### 2/5 — Brightness *2026-04-13, version 1.1* The flash is not bright enough to be useful. ### 2/5 — Erratic *2025-01-21* On my iPhone 14 the strobe light is very erratic. ### 3/5 — Works, but dimly *2024-04-13, version 1.1* Does the job, but doesn’t set the flash to full brightness. ### 2/5 — Strobe light review *2023-02-05* Love the concept however the torch light is not bright enough. ### 5/5 — Range *2021-09-29, version 1.1* Used to diagnose lathe speed, from 55 - 2000 rpm. Good at faster speeds; maybe a little doubtful around 60 rpm. Used a separate digital laser scope to verify. Like the ability to adjust strobe manually. ### 5/5 — Excellent *2021-09-22* This works fantastically on my nagra 3 tape deck on the stroboscopic speed wheels Really excellent ### 2/5 — Brightness *2021-08-29, version 1.1* The strobe light is too dim. And on my iphone8 it will not stay adjusted to the bright end of the scale. Everything Thing Else Works Fine. Please Help! ### 5/5 — Very good *2021-06-14* No idea if its accurate but its easy to use and very interesting ### 1/5 — Inconsistent *2021-04-29, version 1.1* I don’t know if it is the app or my iPhone XS, but the strobe pulse is not consistent. It misses beats and varies in brightness. ### 5/5 — Lathe speed *2021-02-23, version 1.1* Very helpful in getting my lathe and drill press speeds right. ## Most critical reviews (10 lowest-rated) ### 1/5 — Broken *2026-04-05, version 1.1* This app no longer works. ### 1/5 — Ok *2026-04-02* Don’t get how you are suppose to use it ### 1/5 — Cannot hold a steady strobe light; constantly cuts out. *2025-12-03, version 1.1* Very disappointed in this flawed app. The strobe light, although accurate in speed, cannot hold its light and blacks out every 2 seconds. Useless. ### 1/5 — Erratic *2022-10-31* LED flashes erratically, no use at all. Deleted. ### 1/5 — Sir *2022-08-13* Light is on lowest brightness with no way to increase it whatsoever ### 1/5 — Consistently accurate flashes? No *2022-07-23, version 1.1* Needs a fix to make the strobe flash at even rates. ### 1/5 — Not ISO or NIST compliant; way off *2022-07-08, version 1.1* We just had our centrifuge calibrated by an ISO 17025 accredited lab. It was recorded at 2515 RPM and this app reads 2664. That’s out of specification for us. ### 1/5 — Lump of horses—t *2022-04-24, version 1.1* Ruined it by putting an add in the control box. I before paid too. What a joke. ### 1/5 — нестабильная частота вспышек *2022-01-30* нестабильная частота вспышек ### 1/5 — Oof! Nice Idea, But That’s As Far As It Goes! *2021-08-16, version 1.1* ZERO STARS — I tried and tried and tried and tried, but it will not work on my iPhone SE! It doesn’t even try to work, even though I have the flashlight app that came with the phone! ## Most praised reviews (10 highest-rated) ### 5/5 — Awesome teaching tool! *2025-04-03* The metrics (frequency and RPM) bring awesome demonstration to ceiling fans, house fans, guitar strings, water streams! Visual perception is so interesting as inspired by frame rates. ### 5/5 — Technical Service Manager-HVAC OEM *2024-01-20* This app works very well and is very accurate! Very easy and quick to use, even one handed! ### 5/5 — . *2023-10-21, version 1.1* Unbelieavble saved my project -Sincerely LeBron James ### 5/5 — Perfect Strobe for Zoetropes *2023-07-23* Outstanding app. Very accurate strobe for timing the frame rates for zoetropes. The flashes are clean also, which gives crisp animations. I actually like how the flash is not overly bright — this shields my zoetrope animations from over exposure. I am stunned that this superb app is free. I will check the author’s web page to see if there is a option to submit a donation. ### 5/5 — Great app! Used every day! *2023-04-25* Each Hertz is equal to 60 cycles per minute! 10 Hz equals 600 cycles per minute!! I love using this strobe light as it has the exact Hertz setting! ### 5/5 — Excellent *2023-04-17* Excellent - perfect for checking the 33/45rpm speed of my Dual record player turntable. Thank you. ### 5/5 — Does what it says *2023-01-14* Simple to use, does what it says. Ideal for checking rpm of drill press, lathe, etc. Not sure if LED flash is at max brightness - had to turn workshop lights off to see things properly. Useful app though. ### 5/5 — 50hz brilliant *2022-05-02* Used it to check turntable speed. Either turntable is 0.3% slow or this is 9.3% fast - close enough for my ears👂👂 ### 5/5 — Strobe App. *2021-12-26* Useful App. I does what it claims to do, and does it well. ### 5/5 — Strobe app *2021-10-11* Works well. Used it to test lathe running speeds against calculated spindle rpm. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*