NASDS vs CCRtools
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NASDS
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Hier können Sie ihre Brevets digital speichern, Sie können ihren Tauchgang loggen. Und Sie finden nützliche Tipps für einen sicheren Tauchgang.
CCRtools
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CCRtools is application for closed-circuit rebreather (CCR) divers. CCRtools helps you prepare for dives safely with checklists, gas blending calculations, O₂ sensor tracking, and standard diving calculators. Checklists can be downloaded, created or modified and can contain checks, values to enter and timers. The sensor log supports up to five O₂ sensors displaying the trend of linearity.
Screenshots
Verdict
The clearest difference is iOS requirement: NASDS at 13.0 against CCRtools's 18.2. On price, update cadence, 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.
NASDS ships an update monthly, CCRtools fortnightly. The most recent releases landed on September 26, 2026 and October 12, 2026 respectively.
| Parameter | NASDS | CCRtools |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 42 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Christian Daume | Kai-Uwe Sattler |
In-app purchases
NASDS
No in-app purchases
CCRtools
No in-app purchases
