Velix Mobility vs IDD / IADS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Velix Mobility
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Use our bikes and e-bikes in your private sharing system
IDD / IADS
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Instructor Dive Development (IDD) is the first European professional diving organization that developed the modular teaching system and is a leader in the European diving world. IDD was founded in 1990 in the Netherlands. We offer training of all levels at the highest quality. IDD certifications are recognized worldwide! Did you know that there are only a few worldwide recognized dive certifications? The IDD certification is next to PADI, SSI and NOB the Dutch training organization with hundreds of affiliated diving schools in the Netherlands, Curacao, Thailand and many more places in the world. We are proud to say that we have been around since 1992 and we were the first European professional dive organisation to develop the modular teaching system. Besides the basic diver courses we also offer many specialties which you can do if you have been diving for a while. If you are certified by one of the other organisations that is no problem.
Screenshots
Verdict
The clearest difference is update cadence: Velix Mobility at monthly against IDD / IADS's every 4 months. Velix Mobility also leads on iOS requirement (12.0 vs 15.6). On price, ads, 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.
Velix Mobility ships an update monthly, IDD / IADS every 4 months. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.
| Parameter | Velix Mobility | IDD / IADS |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 67 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Locaventure NV | Professional Dive Association Holding B.V. |
In-app purchases
Velix Mobility
No in-app purchases
IDD / IADS
No in-app purchases
Questions
Is Velix Mobility free?
Is IDD / IADS free?
Do Velix Mobility or IDD / IADS have ads?
Which is updated more often, Velix Mobility or IDD / IADS?
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