Comparison

BellWave vs Engine Sim

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

Head to head
About

BellWave

Features
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BellWave: Your Sacred Digital Temple Bell & Mindfulness Companion Transform your phone into a complete spiritual companion with BellWave. More than just a soundboard, BellWave is a sanctuary for your daily Puja, meditation, and mindfulness practice, combining realistic physics, immersive atmospheres, and intelligent features. ### SIX SACRED BELLS Choose from 6 distinct bell types, each with its own unique character and resonance: • Temple Bell: Deep, divine resonance for traditional worship. • Golden Hand Bell: Clear and bright resonance. • Silver Hand Bell: Pure and sharp tones. • Silver Medium Bell: Balanced tone with rich resonance. • Small Silver Bell: High-pitched and delicate. • Tiny Gold Bell: Soft, subtle chime for gentle moments. ### IMMERSIVE AARTI MODE Step into a divine atmosphere: • Sacred Background Audio: Create the perfect ambient space for your devotion. • Real-time Feedback: Smooth, second-by-second time indicators for precise tracking of your aarti. • Auto-Play Devotion: Selected audio (YouTube or Local) starts automatically, bringing instant peace. • YouTube & Local Support: Add your favorite devotional videos or local audio files for a truly personal sanctuary. ### RITUAL & GUIDED MEDITATION Elevate your spiritual journey with our dedicated Ritual mode: • Ready When You Are: Guided meditation is now enabled by default for an immediate auspicious start. • Triple-Layer Audio Engine: Seamlessly blends ambient tracks, voice guidance, and bell chimes. • Automatic Mood Selection: Audio that adapts to the time of day (Brahma, Shanti, Shakti, Dhyana). • Customizable Sessions: Set your practice length from 5 to 120 minutes. • Sahaj Transition: A peaceful, natural descent into silence at the end of every session. ### PERSONALIZED PLAYLISTS BellWave puts you in control of your soundscapes: • YouTube Audio Playback: Paste any YouTube link to add your preferred chants, mantras, or meditation music. • Local Audio Playback: Add your favorite devotional videos or local audio files for a truly personal sanctuary. • Playlist Management: Organize, reorder, and delete tracks to create your perfect spiritual flow. • Smart Validation: We ensure your links are valid and provide high-quality audio metadata. ### REALISTIC PHYSICS & INTERACTION Experience the tactile feel of a real bell: • Shake to Ring: Advanced physics allow for louder strikes with more intense motion. • Tap to Ring: Precise, controlled sounds with a simple touch. • Press & Hold to Silence: Instantly quiet the resonance, just like touching a real bell. • Dynamic Haptics: Feel the unique vibration of each metal through volume-synchronized pulses. ### TIME TELLER & BACKGROUND CHIMES Let mindfulness follow you throughout the day: • Background Chimes: Beautiful Hourly, Half-Hourly, or Quarter-Hourly chimes that run even when the app is closed. • Customizable Density: Choose how often you want to be reminded to breathe and stay present. ### MULTILINGUAL SUPPORT Practice in your preferred language with full localization for: • English • Hindi (हिन्दी) • Nepali (नेपाली) ### PREMIUM EXPERIENCE • 100% Ad-Free: No interruptions during your sacred moments. • OLED Optimized: Stunning pitch-black background with vibrant golden accents. - Visual Breath Guide: Synchronized visuals and haptics to guide your breathing rhythm. - Offline Mode: Your core practice is always available, even without an internet connection. Download BellWave today and carry the divine vibration with you everywhere. Whether you're performing daily devotion or seeking a moment of peace in a busy day, BellWave brings the sacred atmosphere of the temple to your fingertips.

About

Engine Sim

Experience realistic engine sounds with interactive controls. Explore a variety of engines, from kei cars to V12s, and feel the vibrations. Practice gear shifting and rev-matching for an immersive automotive simulation.

Highlights
  • 10 realistic engine sounds
  • Interactive throttle control
  • Live engine sound generation
  • Straight-pipe mode
  • Haptic feedback
  • H-pattern shifter and paddles
  • Rev-matching practice
Features
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Press the pedal and the engine roars for real. Just move your finger and 21 different engines come alive — from a 660cc turbo kei car to a W16 hypercar, all the way to a racing V10 that screams to 19,000 rpm. It's a new kind of toy you can just pick up and play. No complicated setup. Drag across the screen and feel how good a good engine sounds. SIMPLE TO PLAY, DEEP IF YOU WANT IT - 21 engine sounds: V-twin, turbo kei car (660cc), inline-4, inline-5, inline-6, boxer-4, flat-6, V6, cross-plane and flat-plane V8s, V10, V12, W16, and a racing V10 to 19,000 rpm - A throttle that reacts to exactly how hard you press: ease in for a soft idle, floor it for a full-throttle scream - Every sound is made live, not a recording on loop — so the same rev never sounds exactly the same twice - Straight-pipe mode in the chassis tuning screen: open up the exhaust for more pops and bangs on lift-off - Haptics that pulse with the revs, so you feel the engine in your hand - Color RPM gauge with a rev-limiter cutout FOR CAR PEOPLE, THERE'S MORE - An H-pattern shifter (switch to paddles anytime) so you change gears yourself - Practice rev-matching: brake, blip the throttle, shift. Nail it and it's smooth; botch it and you feel the driveline thump - Per-cylinder firing and uneven exhaust timing keep it from ever sounding like a loop - Tune each engine: spend miles earned by driving on mufflers, intakes, headers, superchargers, cams and ECU maps, and see your 0–100 km/h (0–62 mph) time, top speed and torque change on the spot - Chassis tuning shared across every engine: weight reduction, aero and a lighter flywheel - A Parts Crate for extra parts, with the odds shown in the app - Garage miles keep accruing even while the app is closed - A Pit Stop summary after every drive: distance, miles earned, and any personal bests - Daily tasks, a login bonus, and achievements you can trade in for perks - Game Center leaderboards for top speed and 0–100 km/h - Invite friends with a referral code for bonus miles WHO IT'S FOR - Anyone who loves engine and car sounds - Anyone who wants a bit of fun tinkering with a car while waiting or on the go - Fans curious what a V12 or flat-6 sounds like without owning one - Drivers who want to practice rev-matching before getting behind the wheel AVAILABILITY You start with the inline-4 and every core feature, with no ads on the driving screen. Driving earns miles that unlock the remaining engines and parts through the unlock tree. The next unowned V6, V8 or V12 engine can be rented for 10 minutes after a short video ad, and straight-pipe mode can be unlocked for 24 hours the same way. An optional one-time purchase removes the full-screen ads shown between engine switches; rentals, straight-pipe trials and mile rewards stay available either way. No subscriptions. Tip: headphones or earphones bring out the fine detail in every sound.

Screenshots

BellWave4 screens
Engine Sim4 screens

Verdict

The call

The clearest difference is in-app purchases: BellWave at none against Engine Sim's 14. BellWave also leads on ads (none vs shown). Engine Sim's advantage is chart position (#179 vs unranked). On price, 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

Both are free to download. Engine Sim sells 14 one-off in-app purchases. BellWave asks for nothing beyond the download.

UpkeepUpdate frequency

BellWave ships an update every 2 days, Engine Sim every 3 days. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.

Scorecard3 real differences · 8 level
BellWave versus Engine Sim: the parameters behind the verdict, then further details
ParameterBellWaveEngine Sim
PriceFreeFree
Rating—4.7 (73 ratings) — better
Positive reviews—85.7% of reviews
Number of ratings—73 — better
Update frequencyEvery 2 days — betterEvery 3 days
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
Best chart rank—#179 — better
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better18.0
Further details — not scored
Size8 MB43 MB
Age rating4+4+
DeveloperSajjan BhattaraiSena Takasawa

In-app purchases

None

BellWave

No in-app purchases

14 purchases

Engine Sim

One-time14
  • V6 Grand Tourer$1.99
  • Starter Pack$1.99
  • Quick Shifter$1.99
Show 11 more
  • Big Radiator$1.99
  • Over-Rev Kit$1.99
  • Single 450 Moto$1.99
  • Today's Engine (I6/V8)$1.99
  • Big Bore Kit$2.99
  • Custom Gearbox$3.99
  • Today's Engine (V10/V12)$4.99
  • Straight Pipe$5.99
  • W16 Hypercar$9.99
  • Pro Parts Pack$9.99
  • Unlock Everything$49.99

Questions

Is BellWave free?
BellWave is free to download, with no in-app purchases.
Is Engine Sim free?
Engine Sim is free to download, with in-app purchases available.
Do BellWave or Engine Sim have ads?
Engine Sim shows ads; BellWave does not.
Which is updated more often, BellWave or Engine Sim?
BellWave ships an update every 2 days, and Engine Sim every 3 days. Most recently, BellWave was updated on October 4, 2026 and Engine Sim on October 16, 2026.

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