DD Zone vs Simpli Soda CO2 Refills
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DD Zone
This app allows merchants to digitally share receipts via QR code or app clips. Upcoming features include in-app payment options for unpaid orders using Apple Pay or cards, enabling zero-contact transactions.
- QR code receipt sharing
- App clip receipt sharing
- In-app payment for unpaid orders
- Apple Pay integration
- Card payment integration
- Zero-touch transactions
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Merchants can share receipts via QR code from the POS mobile terminal or the shopping bag printed with an App clip. In the upcoming version, If the order is not paid, you can pay them via Apple Pay or card, with zero-touch with the cashier
Simpli Soda CO2 Refills
This app simplifies CO2 cylinder exchanges for home carbonation systems. It allows users to easily order exchanges, manage delivery locations and payment information, and save money through competitive pricing and discounts.
- Easy CO2 exchange ordering
- Manage delivery addresses
- Update payment information
- Save money on exchanges
- Streamlined transaction process
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Simpli Soda delivers CO2 cylinder refills and exchanges to your door - with app-only savings on every eligible cylinder. Set up in about two minutes, no order required. Tell us your machine and cylinder type, save your address and payment, and reorder anytime with One Tap Refills™. WHY SIMPLI SODA • Save $1 per cylinder only in the app • Faster reorders with saved preferences and One Tap Refills™ • Exchange your empties or buy full cylinders outright • Home delivery. No more last-minute store runs for CO2 • Free shipping on 4-pack orders • Works with Screw-In and Quick-Connect cylinders across popular soda makers • Prepaid return label included for all exchanges • No subscription. Order only when you need to STAY STOCKED • Get refill reminders before you run low • Track every order from placed to delivered • Edit or cancel eligible orders right from the app • Manage your machine, cylinder type, addresses, payment, and refill preferences REAL SUPPORT Need help? Reach a real person by email, phone, or in-app message Monday to Friday. Passwordless email sign-in keeps things simple and secure - no password to remember. Whether you make sparkling water, soda water, seltzer, or homemade soda, Simpli Soda helps keep fresh fizz on hand with less hassle. Download Simpli Soda to save on CO2 refills, skip the store run, and keep the bubbles coming.
Screenshots
Verdict
The clearest difference is review sentiment: DD Zone at 86% against Simpli Soda CO2 Refills's 34%. DD Zone also leads on ads (none vs shown) and update cadence (fortnightly vs every 11 months). Simpli Soda CO2 Refills's advantage is rating (4.7 vs 4.0) and ratings volume (2.1K vs 4). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Simpli Soda CO2 Refills holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Simpli Soda CO2 Refills has 2.1K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 86% of DD Zone's written reviews are positive against 34% of Simpli Soda CO2 Refills's, so the app with the better star average is not the one people write more warmly about.
DD Zone ships an update fortnightly, Simpli Soda CO2 Refills every 11 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.
| Parameter | DD Zone | Simpli Soda CO2 Refills |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) | 4.7 (2.1K ratings) — better |
| Positive reviews | 85.7% of reviews — better | 33.7% of reviews |
| Number of ratings | 4 | 2.1K — better |
| Update frequency | Fortnightly — better | Every 11 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 117 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Quantic Cloud Technologies Pvt. Ltd. | Simpli Soda |
Customer experience
DD Zone
Simpli Soda CO2 Refills
Bugs and requests
DD Zone
Not enough reviews yet to summarise bugs or requests.
Simpli Soda CO2 Refills
Reported bugs
28 issues- App freezes on opening
- App freezes during login
- App doesn't open or spins
- App crashes during setup/ordering
- App errors out during checkout (address to payment)
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- App doesn't allow scrolling to enter password
- App sends passwordless login emails that take too long
- App redirects to browser for login instead of in-app
- App sends email codes for login that don't work
- App shows 'something went wrong' or 'bad request' errors
- App shows 'error 400' or 'error 500'
- App doesn't keep users logged in
- App doesn't support password managers (e.g., 1Password)
- App freezes when trying to use password managers
- App doesn't save user data after upgrades
- App doesn't support Apple Pay correctly
- App doesn't autofill information with password managers
- App has issues with account creation/email recognition
- App defaults to screw-in bottles when quick-connect is desired
- App has no keyboard for login
- App doesn't load or is unresponsive
- App has issues with visual impairment accessibility (slide to pay)
- App doesn't allow for ordering specific cylinder types
- App has issues with payment information entry
- App has issues with address entry
- App has issues with return timelines and charges
- App has issues with customer service response
- App has issues with unsealed canisters
Requested features
10 requests- Improve cost competitiveness
- Allow users to stay logged in
- Simplify two-factor authentication
- Allow multiple shipping addresses
- Improve Apple Pay integration
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- Support password managers for login
- Improve app performance and speed
- Make app a true native app instead of a website wrapper
- Fix issues with ordering screw-in vs quick-connect cylinders
- Provide clearer explanations on return policies and timelines
In-app purchases
DD Zone
No in-app purchases
Simpli Soda CO2 Refills
No in-app purchases
Questions
Is DD Zone free?
Is Simpli Soda CO2 Refills free?
Which has better reviews, DD Zone or Simpli Soda CO2 Refills?
Do DD Zone or Simpli Soda CO2 Refills have ads?
Which is updated more often, DD Zone or Simpli Soda CO2 Refills?
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