DVS vs Span (Did I?)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DVS
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The DVS Control app can be used in conjunction with with the DVS Control Unit. The app uses sophisticated software for the use with smart phones, tablets and computers (PC & Mac). By using the DVS Control app you can connect your DVS Control Unit to your wireless network. Once connected you can remotely access the settings of the unit, set alarm notifications and view live sensor readings. For example, if for any reason the oxygen concentration falls below a set point, you will receive an alarm (push notification) to your device. Using the DVS Control app you are able to remotely view how your system is performing. For example, check when the unit was last cleaned. You may also adjust the settings of the control unit, such as the duration of cleaning intervals. Main Features: - Remotely access the DVS Control Unit. - Receive alarms. - View live performance data. - Easily adjust settings. - View temperature, pH and Oxygen %. - Pond water level control
Span (Did I?)
This app helps you manage recurring tasks and daily routines with a clean, intuitive interface. Set custom reminders for chores, personal care, and more, with interactive widgets for easy completion.
- Track recurring tasks
- Interactive home screen widgets
- Customizable task names and icons
- Automatic task reset
- Clean and intuitive design
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Span is the simplest way to keep track of your recurring tasks and never forget your daily routines. Whether it’s watering your plants, changing bed sheets, or checking the mailbox - Span helps you remember and stay organised. Features: • Track recurring tasks like home chores, personal care, and reminders. • Interactive widgets to complete tasks right from your Home Screen. • Customise task names, icons, and reset times. • Automatic task reset based on your chosen schedule. • Clean and intuitive design - focus on what matters. Perfect for anyone who wants to simplify their daily life and build healthy habits without complicated apps.
Screenshots
Verdict
The clearest difference is in-app purchases: DVS at none against Span (Did I?)'s 2. DVS also leads on iOS requirement (11.0 vs 17.6). On price, update cadence, ads 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. Span (Did I?) sells 2 one-off in-app purchases. DVS asks for nothing beyond the download.
DVS ships an update every 3 months, Span (Did I?) every 2 months. Both last shipped on October 1, 2026.
| Parameter | DVS | Span (Did I?) |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 36 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | Senect GmbH & Co. KG | Anna Sadnova |
In-app purchases
DVS
No in-app purchases
Span (Did I?)
- Just two$2.99
- Full – Unlimited Tasks$18.99









