Comparison

Ratio Divelogger vs krakentools

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

Head to head
About

Ratio Divelogger

Features
Read full description

Ratio Divelogger is a companion app for managing dives and synchronizing dive data from Ratio dive computers. Easily download your dive logs, view detailed dive profiles, track statistics, and store your entire diving history directly on your iPhone. Features include: • Download and manage dive logs from supported Ratio dive computers • View depth profiles, gas information, dive time, max depth and more • Organize, review and maintain your personal dive history • Secure storage of dives on your device • Simple and reliable connection workflow Designed for divers who want a clean, reliable and fast way to manage their dives on the go.

About

krakentools

This comprehensive dive toolbox offers planning and safety features for recreational, Nitrox, TEC, and CCR divers. It includes a digital logbook with Bluetooth connectivity for various dive computers, extensive import/export options, and tools for underwater media editing.

Highlights
  • Dive planner for various dive types
  • Decompression planner with Bühlmann ZH-L16C
  • Gas planning and analysis tools
  • Digital logbook with Bluetooth sync
  • Import/export dive data
  • Underwater photo/video color correction
  • CCR-specific dive tools
Features
Read full description

KrakenTools – the all-in-one toolbox for recreational, Nitrox, TEC, and CCR divers. Version includes 26 professional dive tools, a reworked digital logbook, Bluetooth support for many dive computers, expanded import/export functions, and support for 164 languages. DIVE TOOLS FOR PLANNING AND SAFETY • Dive planner for air, Nitrox, single, repetitive, and multi-dive plans • Decompression planner with Bühlmann ZH-L16C • NDL, Nitrox, Trimix, Best Mix, and gas analysis • Gasblender with real-gas and Z-correction • CNS/OTU, gas density, minimum gas, rock bottom, turn pressure, and lost gas • Bailout, ICD, EAD, EADD, END, ENP, and CCR setpoint • New CCR tools: O₂ cell tracker, scrubber calculator, and scrubber tracking • Lift bag, weighting, and scenario calculators DIGITAL LOGBOOK • Reworked logbook with improved structure, stability, and interfaces • Bluetooth for Shearwater, Heinrichs Weikamp, Ratio, DiveSoft, Halcyon, DiveSystem, Scubapro, Mares, Aqua Lung, Cressi, Oceanic, and more • Import from Scubapro LogTRAK, Garmin FIT, DiveLog, Suunto, and other formats • Export as JSON, CSV, UDDF, DL7, Subsurface XML, and PDF • Dive profiles, statistics, analysis, projects, and groups KRAKENSTUDIO • UW Color Fix becomes KrakenStudio • Photo and video color fix for underwater media • Beta camera connection for Insta360, GoPro, DJI Osmo, and other action cams KrakenTools combines dive planning, gas planning, logbook, dive computer connection, media editing, and analysis in one modern app – developed by divers for divers. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Ratio Divelogger3 screens
krakentools4 screens

Verdict

The call

The clearest difference is in-app purchases: Ratio Divelogger at none against krakentools's 3. krakentools's advantage is update cadence (every 8 days vs every 9 months). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. krakentools sells 3 in-app purchases, starting at $3.99 per month. Ratio Divelogger asks for nothing beyond the download.

UpkeepUpdate frequency

Ratio Divelogger ships an update every 9 months, krakentools every 8 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 6 level
Ratio Divelogger versus krakentools: the parameters behind the verdict, then further details
ParameterRatio Diveloggerkrakentools
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 9 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.2 — better15.0
Further details — not scored
Size90 MB140 MB
Age rating4+4+
DeveloperJiri PrajzArndt Kemper

In-app purchases

None

Ratio Divelogger

No in-app purchases

3 purchases

krakentools

Subscriptions2
  • KrakenTools Pro - Monthly$3.991 Month
  • KrakenTools Pro - Yearly$44.991 Year
One-time1
  • KrakenTools Pro Version$49.99

Questions

Is Ratio Divelogger free?
Ratio Divelogger is free to download, with no in-app purchases.
Is krakentools free?
krakentools is free to download, with in-app purchases available.
Do Ratio Divelogger or krakentools have ads?
Neither Ratio Divelogger nor krakentools shows ads.
Which is updated more often, Ratio Divelogger or krakentools?
Ratio Divelogger ships an update every 9 months, and krakentools every 8 days. Most recently, Ratio Divelogger was updated on October 25, 2026 and krakentools on October 31, 2026.

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