Comparison

DiveSync vs Ratio Divelogger

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

Head to head
About

DiveSync

Features
Read full description

Introduction: DiveSync is a free mobile app that connects your mobile device to your dive computer to manage and organize your precious dive data. DiveSync enables users to view, edit, and analyze previous dives, add locations and photos, and easily update the dive computer firmware. DiveSync is compatible with select dive computers from Cressi, Genesis, OceanPro, Sherwood, and XS Scuba. Key Features: Dive Log: Download, view, and manage your dive logs from your dive computer to your mobile device. Automatically download dives or manually add them to create an extensive logbook. Data: Analyze data such as dive time, max depth, tissue loading, ascent rates, and much more. Dive profiles can be viewed in both graphical and tabular formats. Planning: Set alerts for time and depth, set gas mixes, and manage your dive profile. Customization: Add memos, dive spots, dive photos, and observations. Dive Spots: Accurately add dive locations via Apple Maps. DC Control: Set device settings for your dive computer and perform firmware updates. Bluetooth: Transfer dive data from your dive computer using Bluetooth 5.0 ensuring fast download and upload times. Compatibility: Currently supports Cressi Davinci, XS Scuba Skiff, Oceanpro Spirit, Genesis Graviton, Sherwood Logic+ and Sherwood Wisdom 5 Supported Mobile Platforms: iOS. Summary: DiveSync is a free iOS dive log app that allows you to access and download your dive logs using a streamlined interface and user experience. Automatically download new dives or manually input information with compatible Bluetooth LE enabled dive computers from Cressi, XS Scuba, and Oceanpro. (Currently compatible models include the Cressi Davinci, XS Scuba Skiff, Oceanpro Spirit, Genesis Graviton, Sherwood Logic+, and Sherwood Wisdom 5) To get support from the developers, please use the in-app menu to “Send to Tech Support” and reach out to support@divesync.io. Additional troubleshooting and FAQs may be found directly at the DiveSync website. (www.divesync.io) DiveSync is free and all data is stored locally on your device. Your dive data is not used for any commercial purpose and is not monetized.

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.

Screenshots

DiveSync4 screens
Ratio Divelogger3 screens

Verdict

The call

The clearest difference is update cadence: DiveSync at every 2 weeks against Ratio Divelogger's every 9 months. Ratio Divelogger's advantage is device support (3 vs 1) and iOS requirement (14.2 vs 16.5). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

DiveSync ships an update every 2 weeks, Ratio Divelogger every 9 months. The most recent releases landed on September 20, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 3 level
DiveSync versus Ratio Divelogger: the parameters behind the verdict, then further details
ParameterDiveSyncRatio Divelogger
PriceFreeFree
Update frequencyEvery 2 weeks — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.514.2 — better
Further details — not scored
Size39 MB90 MB
Age rating4+4+
DeveloperProasia Design Co. LtdJiri Prajz

In-app purchases

None

DiveSync

No in-app purchases

None

Ratio Divelogger

No in-app purchases

Questions

Is DiveSync free?
DiveSync is free to download, with no in-app purchases.
Is Ratio Divelogger free?
Ratio Divelogger is free to download, with no in-app purchases.
Do DiveSync or Ratio Divelogger have ads?
Neither DiveSync nor Ratio Divelogger shows ads.
Which is updated more often, DiveSync or Ratio Divelogger?
DiveSync ships an update every 2 weeks, and Ratio Divelogger every 9 months. Most recently, DiveSync was updated on September 20, 2026 and Ratio Divelogger on September 29, 2026.

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