Comparison

3pLevel Pro vs KD Serials

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

Head to head
About

3pLevel Pro

This app displays your vehicle's tilt in 3D, showing roll and pitch angles in real-time. Customize the 3D model and receive visual and audio alerts for exceeding set limits. Track and share your steepest inclines from drives.

Highlights
  • Real-time 3D vehicle tilt display
  • Customizable 3D vehicle appearance
  • Configurable roll and pitch alerts
  • Records and shares maximum inclination data
  • Supports degrees or percentage grade
  • Portrait and landscape orientation lock
Read full description

See your vehicle tilt, in 3D. 3pLevel shows your vehicle's roll and pitch while you drive: a 3D vehicle that leans with the real angles, so you can tell at a glance how far you are from the limit on a side slope or a steep climb. 3D, your way • Two views, one from behind for roll and one from the side for pitch, or one large vehicle • Choose the paint color of the 3D vehicle • Prefer pictures? Pick an illustration, a silhouette that turns red past your limit, or a photo of your own vehicle with the background removed for you Alerts you can't miss • A red flash and a sound when roll or pitch passes your limit • A gap alert when the angle changes suddenly • See the steepest roll and pitch you reached on the trail • Dials with your inclination limit in red and your max inclination in blue Your max inclination, ready to share • Tap Start when you set off and Finish at the end: the drive's max roll and pitch, with its time • Share your max inclination as an image on social media or with friends: on a drawn slope, a trail photo, or a photo of your own • Reopen your last drive's max and share it later Made for the car • Set the level once with the phone in its holder; 3pLevel remembers it and asks again if the phone has moved • Degrees or % (grade) • Portrait or landscape, with an orientation lock • Light, dark or automatic, with large readouts, eight background colors and true black in dark mode • In English, German, Spanish, French, Italian and Dutch 3pLevel Pro • Import your own vehicle: a 3D scan made with your iPhone, or a model from the web (USDZ or OBJ) • iPhone and iPad, in any window size next to your maps More for the road from the same team. For off-road, overlanding and rally-raid tripmaster duty, see 3pMaster. For regularity (TSD/CAST) rallying, roadbook navigation and open-road timing, see 3pRally.

About

KD Serials

Features
Read full description

KD series volt-ampere meter is a new type of coulomb meter that can measure various physical parameters such as voltage, current, power, charge and discharge capacity, remaining time, etc. At the same time, parameters can also be set to achieve full capacity voltage, zero capacity voltage, low capacity alarms, etc. Features. The meter can automatically identify the direction of the current, and can monitor the battery capacity in real time and use a broken code liquid crystal display. The measured data display information is comprehensive and user-friendly.

Screenshots

3pLevel Pro4 screens
KD Serials2 screens

Verdict

The call

The clearest difference is price: KD Serials at Free against 3pLevel Pro's $4.99. KD Serials also leads on iOS requirement (9.0 vs 17.6). 3pLevel Pro's advantage is update cadence (weekly vs every 4 weeks). On 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

KD Serials is free to download; 3pLevel Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

3pLevel Pro ships an update weekly, KD Serials every 4 weeks. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 7 level
3pLevel Pro versus KD Serials: the parameters behind the verdict, then further details
Parameter3pLevel ProKD Serials
Price$4.99Free — better
Rating3.5 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyWeekly — betterEvery 4 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.69.0 — better
Further details — not scored
Size6 MB39 MB
Age rating4+4+
DeveloperStooj srlHangzhou Junce Instruments Co., Ltd.

In-app purchases

None

3pLevel Pro

No in-app purchases

None

KD Serials

No in-app purchases

Questions

Is 3pLevel Pro free?
3pLevel Pro costs $4.99, with no in-app purchases.
Is KD Serials free?
KD Serials is free to download, with no in-app purchases.
Do 3pLevel Pro or KD Serials have ads?
Neither 3pLevel Pro nor KD Serials shows ads.
Which is updated more often, 3pLevel Pro or KD Serials?
3pLevel Pro ships an update weekly, and KD Serials every 4 weeks. Most recently, 3pLevel Pro was updated on November 6, 2026 and KD Serials on November 3, 2026.

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