Comparison

Trans4motor R vs BeatShift

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

Head to head
About

Trans4motor R

Explore and animate four-stroke engines with detailed customization options. Simulate transmissions, edit engine specifications, and experience realistic vehicle physics. Share your creations and learn about engine mechanics through interactive tutorials.

Highlights
  • Seamless engine morphing (inline to V, cylinder count, firing intervals)
  • Full transmission visualization (3-shaft, 2-shaft, dog gearbox)
  • Deep engine specification editing
  • Realistic vehicle physics simulation
  • Community sharing platform for engine designs
  • Interactive learning modes (TechTour)
  • Enhanced, realistic engine sound simulation
Read full description

The definitive successor to the original Trans4motor is finally here — a new installment that lets you freely explore and animate four-stroke engines on your iPad or iPhone. Created for those who love internal-combustion engines and never tire of their rhythm, mechanics, and beauty. 【Seamless Engine Morphing】 Switch from inline to V configurations, alter bank angles, change cylinder counts, and adjust firing intervals. Every change transforms the engine while it continues running. Camshafts split and merge, crank phasing shifts, valve angles move dynamically — a completely new way to experience engines. 【All-New Transmission Simulation】 For the first time in the series, the gearbox itself is fully visualized. ・3-shaft synchromesh transmission ・2-shaft synchromesh transmission ・Dog gearbox (motorcycle-style) Enter tooth counts manually, or let the app generate realistic gear meshes from gear ratios. Follow shift forks, constant-mesh gears, clutch engagement, and truly see how power flows. 【Deep Engine Specification Editing】 Greatly expanded from the original, allowing a far richer expression of each engine’s character. ・Cylinder count, bore, stroke ・Bank angle, mounting angle ・Firing order, firing interval ・Cam drive (belt / chain / gear) ・Valve train (SOHC / DOHC / OHV / VTEC / Desmodromic) ・Valve diameter and included angle (reflected in the CG model) ・Tire width, aspect ratio, wheel diameter (outer diameter calculated automatically) Recreate everything from spirited singles to distinctive 5-cylinder pulses, modern V4 superbikes, and the bold heartbeat of American V8s. 【Realistic Vehicle Physics】 Not just an animation. Torque curves, vehicle mass, gear ratios, and tire diameter are calculated frame by frame to determine vehicle speed. Shift through the gears and feel how the engine and drivetrain connect as acceleration builds. 【Connect with the “Engines” Sharing Platform】 Share your creations with the world. ・Upload / download ・Share to X (formerly Twitter) ・Community “likes” and voting ・Planned competitions Build a community-driven engine library with fellow enthusiasts. 【GearVision Mode】 Gears, shift forks, clutches — see exactly which components are transmitting power at any moment. A visualized power-flow mode revealing the inner workings of each shift. 【TechTour】 A hands-on learning mode evolved from the series’ interactive tutorials. ・Four-stroke fundamentals ・Firing order ・Synchromesh mechanisms Engines become even more fascinating when you understand how they work. 【Enhanced Engine Sound】 With support from Sound Design Lab LLC, this latest audio method combines single-shot, harmonic, and random-noise components to create a natural and realistic engine presence. Differences in cylinder count and firing intervals come through with greater character and detail. Engine sound is included as a standard feature, not an in-app purchase. 【Preset Engines】 Trans4motor R includes 12 preset engines ranging from classic icons to modern super-sport engines and powerful V8s. ※ For learning and presentation purposes, the engine CG animations run at one-tenth of real-world rotational speed. ※ This app reproduces engines based on publicly available specifications for educational use and is not intended to be an exact replica of actual machinery, dimensions, or designs. ※ Company names and product names mentioned in this app are trademarks or registered trademarks of their respective owners.

About

BeatShift

Features
Read full description

BeatShift is a metronome and rhythm training app built for real practice—not just tapping time. SEQUENCE (free) • Multi-layer mixer for accent, quarter, eighth, sixteenth, and triplet • Swing control with shuffle feel • Click, woodblock, or voice count • Tap tempo and saveable presets UNLOCK MODES (3-day trial, then one-time unlock) • CHANGE UP — cycle through note values and polyrhythms bar by bar • SPEED — automate tempo from start BPM to end BPM with precise pacing • ODD TIME — practice odd meters like 7/8 and 9/8 with dedicated patterns • MODULATION — train subdivisions and mute/training cycles Built for musicians who need more than a basic click: swing, subdivisions, odd meters, and structured drills in one place. Unlock is a one-time purchase. Restore purchase anytime on the same store account.

Screenshots

Trans4motor R4 screens
BeatShift4 screens

Verdict

The call

The clearest difference is price: BeatShift at Free against Trans4motor R's $7.99. Trans4motor R's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence, device support and iOS requirement 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

BeatShift is free to download; Trans4motor R costs $7.99 up front. BeatShift sells 1 one-off in-app purchase. Trans4motor R asks for nothing beyond the download.

UpkeepUpdate frequency

Trans4motor R ships an update every 2 weeks, BeatShift weekly. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Trans4motor R versus BeatShift: the parameters behind the verdict, then further details
ParameterTrans4motor RBeatShift
Price$7.99Free — better
Rating4.6 (11 ratings) — better—
Positive reviews64.0% of reviews—
Number of ratings11 — better—
Update frequencyEvery 2 weeksWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.016.0
Further details — not scored
Size178 MB4 MB
Age rating4+4+
DeveloperKitt Peak, Inc.tomohiro ogawa

In-app purchases

None

Trans4motor R

No in-app purchases

1 purchases

BeatShift

One-time1
  • BeatShift Pro Tempo & Voice$9.99

Questions

Is Trans4motor R free?
Trans4motor R costs $7.99, with no in-app purchases.
Is BeatShift free?
BeatShift is free to download, with in-app purchases available.
Do Trans4motor R or BeatShift have ads?
BeatShift shows ads; Trans4motor R does not.
Which is updated more often, Trans4motor R or BeatShift?
Trans4motor R ships an update every 2 weeks, and BeatShift weekly. Most recently, Trans4motor R was updated on October 30, 2026 and BeatShift on October 25, 2026.

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