Comparison

EUC Logger vs Crager

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

Head to head
About

EUC Logger

This app provides live telemetry and logging for electric unicycles. It displays real-time wheel metrics, offers customizable audio alerts for critical events, and automatically records ride data for later analysis on charts and maps. Enhance your ride videos by overlaying telemetry data.

Highlights
  • Live telemetry dashboard with 33 wheel metrics
  • Customizable audio alerts for critical events
  • Automatic ride recording with CSV export
  • Post-ride analysis with charts and map playback
  • Telemetry overlay on recorded videos
  • Support for multiple electric unicycle protocols
Features
Read full description

EUC Logger is a live telemetry dashboard and a black box for your electric unicycle. Connect over Bluetooth and ride: the app shows what the wheel is doing now, warns you out loud when it matters, and writes the ride to a file on your phone by itself. Afterwards, take it apart on charts and a map — or put its numbers onto the video you shot. WHILE YOU RIDE • 33 wheel metrics as tiles — speed, PWM, power, voltage, currents, charge, temperatures, lean, odometer, both BMS packs — each with a chart and session min-max • The dashboard learns your wheel: tiles it never fills hide themselves, a value it never sent shows a dash, never a zero. Pinch to resize, hold to reorder; tiles live on pages, like iPhone home screens • When the link drops the screen says so: dashes instead of numbers, a gap in the chart instead of a frozen line • The same dashboard runs on Apple Watch WHAT IT WARNS ABOUT • Twelve kinds: PWM, speed, lean, motor and battery temperatures, both currents, two levels of low charge, tyre pressure (InMotion), link lost and restored. Thresholds are per wheel; PWM is on from the start, at 80 % • Each kind has its own sound, so you know what fired without looking; your own spoken phrase can replace the beep, and low charge speaks by default • Audible with the silent switch on and the screen locked; other audio is ducked only while an alert sounds • This adds to the wheel's own tiltback and beeper, not replaces them RECORDING RUNS ITSELF • Starts with the first telemetry frame — no start button; a dropped link or a relaunch does not end the session • One row per telemetry frame: a couple per second on some wheels, about twenty on others • 60 CSV columns, the first ten exactly the DarknessBot layout, so analysers of its logs open the file • Share any recording, even the one being written; trim a spare piece into a separate file AFTER THE RIDE • Charts: up to three metrics at once, pinch to zoom, hold for a ruler, landscape for full screen. Line, area or bars, window min-average-max, and a break where telemetry went silent • The route on a map, coloured by speed, with ride playback. On a track the app finds laps itself, times them and shows the best one • Heart rate from Apple Watch — a column in the file, a tile and a chart TELEMETRY OVER VIDEO • A clip from the library plus your recording — numbers land on the frame: tiles, bars, sparklines, speed and lean arcs • Where the footage runs past the recording, or the link was silent, the plate shows a dash • Projects are saved. Export up to 4K, H.264 or HEVC, Reels and YouTube presets YOUR WHEELS • Every wheel keeps its own thresholds, settings, layout, name and archive; the app reconnects to the last one, and a wheel that is off opens as a frozen dashboard • Six protocol families. Three verified on hardware we own: InMotion V2 (P6), Begode-compatible (SV168), Veteran-compatible (NOSFET Aero). Three more — KingSong with Rockwheel, InMotion V1 (V5–V10), Ninebot Z — decoded from open sources and riders' captures • Your wheel not listed? Connect anyway: the protocol is recognised from the wheel itself • The app reads telemetry and changes nothing in the wheel. One exception — SmirnoV firmware: its settings can be edited, with balance fine-tuning behind a warning • An optional dragy DRG71 (Pro) GPS meter is read alongside: speed, g-forces, coordinates • No wheel at hand? Demo mode behind the gear icon runs the app on a simulated ride PRIVACY • Free: no accounts, no ads, no analytics, no third-party SDKs • Rides stay on the phone; optionally copied to iCloud Drive • Location is used for speed and route: both go into the ride file and onto the map. Map imagery comes from Google's static maps — the shown area's coordinates go into that request, nothing else • One thing only can leave the phone: a raw protocol capture for the developer, off by default, sent on your command iPhone, iOS 17+; watch dashboard needs watchOS 10+. English and Russian. Metric units only. euclogger.com

About

Crager

Features
Read full description

Crager - приложение для управления совместимыми зарядными устройствами по Bluetooth. Подключите зарядку, чтобы видеть текущие показания и изменять параметры прямо с iPhone или iPad. Возможности: - Просмотр входного и выходного напряжения, тока и мощности. - Контроль температуры, частоты, накопленных Ah и Wh. - Настройка тока, напряжения и других параметров зарядного устройства. - Включение и выключение выхода. - Установка и смена пароля, включение и отключение парольной защиты. - Ручное сохранение выбранного устройства для автоматического подключения при следующем запуске. - Светлая и тёмная темы. Показания автоматически обновляются во время работы приложения. Изменение параметров проверяется повторным чтением данных с зарядного устройства. Для работы требуется совместимое зарядное устройство с Bluetooth. Доступные параметры и показания зависят от его прошивки.

Screenshots

EUC Logger4 screens
Crager3 screens

Verdict

The call

The clearest difference is update cadence: Crager at every 2 days against EUC Logger's weekly. Crager also leads on iOS requirement (15.0 vs 17.0). 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

EUC Logger ships an update weekly, Crager every 2 days. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 8 level
EUC Logger versus Crager: the parameters behind the verdict, then further details
ParameterEUC LoggerCrager
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyWeeklyEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size11 MB3 MB
Age rating4+4+
DeveloperPavel DEMIANOVUladzislau Hliavitski

In-app purchases

None

EUC Logger

No in-app purchases

None

Crager

No in-app purchases

Questions

Is EUC Logger free?
EUC Logger is free to download, with no in-app purchases.
Is Crager free?
Crager is free to download, with no in-app purchases.
Do EUC Logger or Crager have ads?
Neither EUC Logger nor Crager shows ads.
Which is updated more often, EUC Logger or Crager?
EUC Logger ships an update weekly, and Crager every 2 days. Most recently, EUC Logger was updated on October 9, 2026 and Crager on October 3, 2026.

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