NASDS vs Bottomtime
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.
Bottomtime
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Bottomtime is the dive logbook that belongs to you — beautiful, fast, and offline-first. Log a dive in 30 seconds, watch your sites map fill up, and keep your whole diving life in one place. No account required. Your data is yours. WHY DIVERS SWITCH TO BOTTOMTIME • Offline-first: log on the boat, the liveaboard or the cenote — no signal needed. Everything syncs when you're back. • Log a dive in 30 seconds: site, depth, time, gas, buddy, conditions — fast, or as detailed as you like. • Your sites on a map: every dive plotted, your personal underwater passport. • Species log included — names and sightings are never behind a paywall. FREE, AND GENEROUS • Unlimited dive log with photos • 30-second quick log and a full detailed editor • Career stats: dives, max depth, total bottom time • Dive sites map • Marine species log with common names BOTTOMTIME PRO — automation and comfort, never your data • Import from Apple Health and dive computers (depth, duration) — no double entry • Import and export open formats: UDDF, CSV, PDF • Automatic iCloud sync across iPhone and iPad • Advanced stats and trends: SAC/RMV, average depth, progression over time • Gear tracking with service reminders • Species photos and history • PDF logbook export with instructor signature • Surface interval and no-fly planner (informational) • Home Screen widgets BUILT FOR EVERY DIVER Recreational, technical, freediver or snorkeler — multi-cylinder, nitrox and trimix, safety stops, and metric or imperial units. YOUR DATA, YOUR RULES No account needed. Works fully offline. Export to UDDF, CSV and PDF anytime — your dive history is never locked in. Premium is available as a monthly or yearly subscription (with a 7-day free trial on the annual plan) or a one-time lifetime unlock. Free features stay free, forever. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://develak.com/privacy-policy/
Screenshots
Verdict
The clearest difference is in-app purchases: NASDS at none against Bottomtime's 3. NASDS also leads on iOS requirement (13.0 vs 17.0). On price, 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. Bottomtime sells 3 in-app purchases, starting at $4.99 per month. NASDS asks for nothing beyond the download.
| Parameter | NASDS | Bottomtime |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 42 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Christian Daume | Develak |
In-app purchases
NASDS
No in-app purchases
Bottomtime
- Bottomtime Pro — Monthly$4.991 Month
- Bottomtime Pro — Yearly7 Days trial$29.991 Year
- Bottomtime Pro — Lifetime$79.99









