Comparison

Bloo vs Bottomtime

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Bloo

Log your scuba dives with photos and detailed notes. This app allows you to record dive sites, depths, conditions, and certifications. It also supports importing data from other apps and offers an interactive world map of your dive locations.

Highlights
  • Offline dive logging
  • Attach photos to dives
  • Searchable dive site database
  • Track certifications
  • Import from other apps
  • Group dives into trips
  • Interactive world map
Read full description

Your dives, beautifully archived. Bloo is a dive journal for divers who care about the memory as much as the log. Built offline-first so you can log a dive at the boat, on the plane, or on the drive home - then sync the moment you're back on Wi-Fi. BUILT FOR THE POST-DIVE RITUAL • Log a dive in under 60 seconds: site, depth, time, conditions, rating. • Metric or imperial. Set it once, change it any time. • Attach photos from your camera roll as first-class memories, not afterthought attachments. • Search a catalogue of over 6,500 dive sites, or drop a pin on a new one. • Rename, merge, or remove any site you've added - including ones an import created for you. • Works fully offline. No spinner. No "try again later." • Track your certifications by agency and level, from Open Water to instructor. SCAN YOUR PAPER LOGBOOK • Photograph a page and Bloo reads the dives off it: date, site, depth, time, buddies, wildlife, notes. • Check every reading against the page before anything saves. Anything Bloo wasn't sure of is marked. • Your first 10 pages are free. Bloo Pro reads the rest. BRING YOUR DIVE HISTORY WITH YOU • Import straight from your dive computer: Garmin Descent and Suunto Ocean (.fit). • Or from another app: Subsurface, Shearwater, Oceanic+, MacDive and anything else that exports UDDF - your dives, sites, buddies and gear. • Pick several files at once. Bloo skips the dives it already has, so nothing lands twice. • Check every dive site before anything saves - link it, rename it, or keep it separate. • Tap a .fit or .uddf file in Files, Mail or AirDrop to open it straight in Bloo. EVERY DIVE IS A STORY • Group dives into trips so every adventure lives as one memory. • Revisit any dive with the photos, notes, and conditions you captured that day. • Note what you saw: log the wildlife on any dive. • Scrub through your depth, temperature and tank-pressure profile on computer-logged dives. • Lifetime stats: bottom time, depth records, countries dived, dives per year. DIVE WITH FRIENDS • Add the buddies you dived with, and tag your instructor or divemaster. • Invite a buddy to connect. Once you both say yes, you see each other's dives. • Tag a buddy on a dive you did together and they can add it to their own logbook in a tap. • Keep any dive private with a single switch. Private dives never leave your logbook. • Buddy Wrapped: a beautiful, shareable recap of your history with each buddy. Free for everyone. SEE EVERYWHERE YOU'VE BEEN • An interactive world map pins every site you've dived. Zoom in on a region and replay the trip, or search to jump straight to a country or a named site. BLOO PRO The free tier is a full logbook - not a trial, not a teaser. Most divers will never need more. Bloo Pro unlocks: • 50 photos per dive (up from 6) • Videos on every dive (up to 5) • Year-by-year stats: compare any year, any depth • Your whole paper logbook, scanned (10 pages free) YOUR DATA IS YOURS Import or export your entire logbook as JSON or UDDF, the open dive-log format your past and future software will still read. Private-only media storage with signed-URL access. Log your first dive tonight, or bring a lifetime of them with you, and bring your dive buddies too. Your future self will thank you. --- Bloo is fully functional without a subscription. Bloo Pro is an optional subscription, billed yearly or monthly; the yearly plan has a 14-day free trial. Pricing shown in-app, localised to your region. Payment is charged to your Apple ID when you confirm the purchase, or at the end of the free trial on the yearly plan. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID account settings. Terms of Use: https://www.divebloo.com/terms Privacy Policy: https://www.divebloo.com/privacy

About

Bottomtime

Features
Read full description

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

Bloo4 screens
Bottomtime4 screens

Verdict

The call

Bloo and Bottomtime are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Bloo sells 1 in-app purchase, starting at $34.99 per year and Bottomtime sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Bloo versus Bottomtime: the parameters behind the verdict, then further details
ParameterBlooBottomtime
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyWeekly—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.4 — better17.0
Further details — not scored
Size112 MB6 MB
Age rating4+4+
DeveloperLuke KidneyDevelak

In-app purchases

1 purchases

Bloo

Subscriptions1
  • Bloo Pro14 Days trial$34.991 Year
3 purchases

Bottomtime

Subscriptions2
  • Bottomtime Pro — Monthly$4.991 Month
  • Bottomtime Pro — Yearly7 Days trial$29.991 Year
One-time1
  • Bottomtime Pro — Lifetime$79.99

Questions

Is Bloo free?
Bloo is free to download, with in-app purchases available.
Is Bottomtime free?
Bottomtime is free to download, with in-app purchases available.
Do Bloo or Bottomtime have ads?
Neither Bloo nor Bottomtime shows ads.

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