D vs TUNZE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
D
Control your D-D H2Ocean Dosing Pumps for marine reef aquariums. Automate the addition of essential elements by setting dosing frequency and volume for each channel. Monitor your dosing solution levels in real-time.
- WIFI control for dosing pumps
- Automatic element addition
- Set dosing frequency
- Set dosing volume per channel
- Real-time solution level monitoring
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Application for WIFI control for D-D H2Ocean Dosing Pumps, which are designed for automatically adding essential elements to marine reef aquariums, enhancing the stability of the aquarium. The D-D H2Ocean Dosing pumps enable automatic dosing, whereby the user can set the dosing parameters including frequency of dosing and volume for each dedicated channel. In addition the software allows real time monitoring of the dosing solution levels.
TUNZE
Control TUNZE devices like pumps and controllers from a central app. It offers analysis and maintenance features for marine aquariums, helping to stabilize water chemistry and technology for a healthy environment.
- Centralized device control
- Pump and controller management
- Intelligent accessory features
- Water chemistry analysis
- Maintenance tracking
- Marine aquarium companion
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With the TUNZE App, you can control your TUNZE devices centrally, clearly and at any time – whether it’s pumps, controllers or intelligent accessory features. At the same time, the app includes all proven analysis and maintenance features of the former Reef Assistant – now completely free! This makes TUNZE the complete companion for a stable, healthy and easily maintained marine aquarium. Our philosophy: Record values, correct them, stabilize them. Optimal water chemistry and reliable technology are the foundation of a successful reef aquarium. Legal Information Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use: https://app.tunze.com/tunze/en/terms-of-use Privacy Policy: https://app.tunze.com/tunze/en/data-terms Imprint: https://app.tunze.com/tunze/en/imprint More information: https://app.tunze.com
Screenshots
Verdict
The clearest difference is ads: D at none against TUNZE's shown. D also leads on monetization model (free vs free with in-app purchases) and update cadence (fortnightly vs every 2 months). TUNZE's advantage is ratings volume (7 vs 2). On price, rating, review sentiment 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.
On the App Store both sit at effectively the same score — 1.5 for D against 1.6 for TUNZE. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews are what separate them: 7% of D's written reviews are positive against 0% of TUNZE's.
D ships an update fortnightly, TUNZE every 2 months. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.
| Parameter | D | TUNZE |
|---|---|---|
| Price | Free | Free |
| Rating | 1.5 (2 ratings) | 1.6 (7 ratings) — better |
| Positive reviews | 6.7% of reviews — better | 0.0% of reviews |
| Number of ratings | 2 | 7 — better |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 13 MB | 67 MB |
| Age rating | 4+ | 4+ |
| Developer | D-D The Aquarium Solution Limited | fynix GmbH |
Customer experience
D
TUNZE
In-app purchases
D
No in-app purchases
TUNZE
No in-app purchases
