Symphony Sonata vs WASHD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Symphony Sonata
Control your home's climate remotely with a smart thermostat. Adjust temperature, set schedules, and save energy. Manage household access and utilize smart away features for effortless savings.
- Remote climate control
- Customizable schedules
- Energy saving features
- Household member access
- Temperature and mode adjustment
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Symphony Sonata is the key to keeping your home climate simple. Connect to a Smart Thermostat by Telkonet and set your comfort settings, cue up your household schedule, and save money and energy while you’re away. — CONTROL FROM ANYWHERE — Check on your thermostat from afar and adjust your home climate. The temperature, the thermostat mode (heat, cool, auto) and fan are all controllable via your phone. — AUTOMATE YOUR DAYS — Set a schedule that works for everyone. Pre-heat or pre-cool your house as you head home. Changing it is easy. Today’s schedule always appears on the home screen. You can update your schedule or just override it temporarily. — ACCOUNTS FOR EVERYONE — Mom, Dad, the babysitter; invite all your household members. — EFFORTLESS SAVINGS — Save money and energy while you’re away with Smart Away. It automatically adjusts the temperature if your home has been empty for hours.
WASHD
Book professional, eco-friendly car detailing services at your preferred location. This app uses steam technology for a deep clean inside and out, saving water and time. Choose from various packages and enjoy a like-new car without the hassle.
- Mobile car detailing at any location
- Eco-friendly steam cleaning technology
- Interior and exterior detailing specialists
- Flexible service packages
- Fleet and B2B solutions
- Secure in-app payments
- Real-time booking updates
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WASHD – Eco-Friendly Mobile Car Detailing at Your Convenience Tired of wasting time at drive-through car washes or waiting in lines? With WASHD, your car gets professionally detailed wherever you are — at home, work, or on the go. We use eco-friendly steam technology to deliver a deep clean inside and out, without wasting water or making a mess. WASHD is more than a wash — it’s real detailing. We specialize in interior and exterior care, using steam and professional tools to clean, sanitize, and restore your vehicle to its best condition. Whether you're looking for a quick refresh or a full detail, WASHD brings high-quality service to your doorstep. How It Works 1. Book a Service Choose your location, vehicle type, and preferred time. 2. Choose Your Package From quick interior/exterior services to deep signature detailing, we have options for all needs. 3. Get WASHD Anywhere Our trained technicians come to you fully equipped with everything they need. 4. Enjoy a Like-New Car No waiting, no water runoff, no stress — just high-quality detailing at your convenience. Key Features Mobile & On-Demand – Car detailing at your home, office, or any location you choose. Eco-Friendly Steam Cleaning – We use steam technology that requires less than one gallon of water. Interior & Exterior Specialists – From carpets to headliners, rims to engine bays, we handle it all. Flexible Packages – Whether it’s a basic touch-up or a full deluxe detail, choose what fits your needs. Fleet & B2B Solutions – Perfect for businesses, rental agencies, and dealerships. Secure Payments – Pay through the app with card on file — no need to carry cash. Real-Time Booking Updates – Get notified when your technician is on the way. Why Choose WASHD? True Detailing, Not Just Washing – We go beyond the surface to deliver professional results. Eco-Friendly – Our steam-based process is safe for your car and the environment. No Water Waste – Traditional car washes can waste up to 100 gallons per wash. We use under 1 gallon. ⏱ Save Time – We detail your car while you do what matters — work, shop, or relax. Local & Reliable – Operating across O‘ahu, we're a Hawai‘i-based team you can count on. Simple Checkout – Card on file, tip in app, or cash on completion — your choice. Consistent Quality – Every detail is performed by trained technicians using premium tools and techniques. Services We Offer Exterior Steam Hand Wash & Wax Interior Vacuum, Wipe Down & Deep Cleaning Steam Sanitization & Odor Elimination Leather Conditioning & Fabric Shampooing Pet Hair Removal Headlight Restoration & Bug/Tar Removal Engine Bay Cleaning Fleet & B2B Solutions Gift Cards & Membership Plans Whether you’re a busy parent, business owner, or car lover — WASHD gives you a professional, eco-conscious detailing experience without leaving your driveway. Get WASHD Today! Download the app, choose your service, and get ready for a spotless, detailed car — wherever you are.
Screenshots
Verdict
The clearest difference is review sentiment: WASHD at 100% against Symphony Sonata's 2%. WASHD also leads on rating (5.0 vs 1.2). Symphony Sonata's advantage is update cadence (every 2 weeks vs every 6 months) and ratings volume (88 vs 9). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
WASHD holds the better App Store score, 5.0 against 1.2. That said, the two scores are not equally well evidenced: Symphony Sonata has 88 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 2% of Symphony Sonata's written reviews are positive against 100% of WASHD's.
Symphony Sonata ships an update every 2 weeks, WASHD every 6 months. The most recent releases landed on October 11, 2026 and October 1, 2026 respectively.
| Parameter | Symphony Sonata | WASHD |
|---|---|---|
| Price | Free | Free |
| Rating | 1.2 (88 ratings) | 5.0 (9 ratings) — better |
| Positive reviews | 2.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 88 — better | 9 |
| Update frequency | Every 2 weeks — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 14 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Telkonet, Inc | WASHD CAR LLC |
Customer experience
Symphony Sonata
WASHD
Bugs and requests
Symphony Sonata
Reported bugs
8 issues- Cannot create account
- App crashes during setup/use
- Cannot connect to WiFi
- Thermostat not found/detected
- Settings not saving
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- Schedules not updating
- Temperature not updating
- App freezes on verifying/connecting
Requested features
5 requests- Fix bugs and make app functional
- Provide a replacement app
- Improve thermostat control and scheduling
- Allow account creation and login
- Ensure app compatibility with newer devices
WASHD
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Symphony Sonata
No in-app purchases
WASHD
No in-app purchases







