KnocKnocK vs FlowEv
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KnocKnocK
This app connects users with a variety of home services, including laundry, dry cleaning, house cleaning, and air-con maintenance. It offers convenient doorstep collection and delivery, competitive pricing, and a dedicated customer support team.
- Laundry & Dry Cleaning
- House & Office Cleaning
- Upholstery Cleaning
- Air-con Cleaning
- Handyman Services
- Doorstep Collection & Delivery
- Customer Support
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Home Services To Your Door. Laundry & Dry cleaning | Premium Laundry | Curtain Cleaning | Air-con Cleaning | House Cleaning | Handyman | Mattress Cleaning... $15 OFF ON FIRST 3 ORDERS! Available both offline and online, 6 days a week, 10am-10pm daily. A dedicated customer service support team. Available 6 days a week. - Laundry & Dry-cleaning services To Your Door: Serving over 50,000+ families in Singapore, KnocknocK is Singapore’s No. 1 Dry-Cleaning & Laundry services App. - House & Office Cleaning: A simple, affordable and convenient way to keep your home and office clean. - Upholstery Cleaning: Professional Mattress cleaning, sofa cleaning, carpet cleaning. - Air-con cleaning services: Fresh Air to your family. *As featured on Vulcan Post, The Finder, Nylon Magazine & HoneyCombers In lesser than 20 seconds, You’ll be able to place a laundry via the app or website. Our well trained woodpecker (Delivery person) will come to your doorstep, WITH NO EXTRA CHARGE. Superior Quality - Handpicked local dry cleaners with over 30 years of experience - Rigorous 6-step quality control Convenience - Get your laundry delivered or done quick and easy. FREE collection and delivery, Served to your doorstep. Competitive Pricing - Factory direct prices. SAVE 30%! - Different prices to meet diverse demands. Excellent Customer Care & Incident Rate - Lowest incident rate: KnocKnock @ 0.2-0.3% VS. Industrial rate @ 0.6-0.7% - A dedicated customer service support team. Available 7 days. - We’ll tackle ANY strain, any item and it is absolutely FREE to re-wash per your request. Testimonials from users: I chose your services not just for the pricing, I like the way you treated my shirts, well cleaned, sharp as well as smooth, and I also like your staff's service attitude, always available and respond my request immediately. I definitely will continue using your service! - Branda, Investment Banker at Central I switched to KnocKnocK because they have competitive prices, they do door to door delivery which is a lot more convenient compared to sending your own laundry even to the nearest laundry shop. The schedule for delivery is flexible too weekdays or weekends. - Alvin, Business Professional at East Coat Tel : 6719 2357 Email : care@knocknockapp.com
FlowEv
Initiate electric vehicle charging instantly by scanning a QR code or using NFC. The app automatically starts the charging process and sends notifications until completion, offering a seamless and hands-free experience.
- Instant charging activation
- QR code scanning
- NFC functionality
- Automatic charging start
- Real-time charging notifications
- Hassle-free user experience
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Instant Charging Feature Start charging your vehicle immediately by simply scanning the QR code on the charger or using the NFC function. The charging process begins automatically, without any extra steps, and you’ll receive notifications throughout, including when charging is complete. This streamlined experience allows for a hassle-free charging process without requiring any further interaction.
Screenshots
Verdict
The clearest difference is rating: KnocKnocK at 3.4 against FlowEv's 2.3. KnocKnocK also leads on review sentiment (29% vs 0%) and iOS requirement (12 vs 15.5). FlowEv's advantage is update cadence (every 3 days vs every 6 weeks). On price, ratings volume, ads and in-app purchases 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.
KnocKnocK holds the better App Store score, 3.4 against 2.3. Both are backed by a comparable volume of ratings — 8 and 3 respectively. Written reviews point the same way: 29% of KnocKnocK's written reviews are positive against 0% of FlowEv's.
KnocKnocK ships an update every 6 weeks, FlowEv every 3 days. The most recent releases landed on September 19, 2026 and June 19, 2026 respectively.
| Parameter | KnocKnocK | FlowEv |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (8 ratings) — better | 2.3 (3 ratings) |
| Positive reviews | 28.6% of reviews — better | 0.0% of reviews |
| Number of ratings | 8 — better | 3 |
| Update frequency | Every 6 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12 — better | 15.5 |
| Further details — not scored | ||
| Size | 77 MB | 104 MB |
| Age rating | 4+ | 4+ |
| Developer | KnocKnocK Technologies Asia Pte. Ltd. | Triple J Technologies LLC |
Customer experience
KnocKnocK
FlowEv
In-app purchases
KnocKnocK
No in-app purchases
FlowEv
No in-app purchases









