Fitsynchronizer vs Diving Standard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fitsynchronizer
Effortlessly transfer your Fitbit data to the Health app with a single click. Sync past data over a specified period, including weight, body fat, steps, distance, and calories. This app helps consolidate your health metrics.
- Sync Fitbit data to Health app
- Transfer weight and body composition
- Synchronize step count and distance
- Import historical data
- Sync calories burned
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Add your Fitbit data to the Health app with a simple click. For instance, if you have a Fitbit scale, your weight data will be synced in the Health app in one click. FitSynchronizer also allows you to synchronize data over a defined period, in order to sync your previous data. The app contains ads. FitSynchronizer managed data: - Weight - Body fat index - Body mass index - Step number - Number of floors - Distance (walking and running) - Calories while in activity - Calories while resting
Diving Standard
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Scuba. Freediving. Snorkelling and more. Everyone who loves the sea, in one place. CHECK THE SEA BEFORE YOU GET IN Water temperature, tides, currents, swell, wave height, water quality and estimated underwater visibility. One screen, so you know whether it is worth going before you pack your gear. Add the sea-conditions widget and you never even open the app. Today's verdict, sea temperature, a live tide curve and the light you have left, on your Home or Lock Screen every time you pick up your phone. YOUR WRIST BECOMES A DIVE COMPANION Depth, dive time, heart rate and NDL, live on Apple Watch Ultra. Every session logs itself. Max depth, duration, water temperature, dive mode, all written down without you touching anything. Stop tapping and start looking. FIND YOUR PEOPLE Local and global communities of sea lovers. Share trips, sightings and honest site reviews. Ask the question you are too shy to ask at the dive centre. Find a buddy near you, or someone on the other side of the world who is into exactly the same thing. SERIOUS ABOUT SAFETY NDL is calculated with Buhlmann ZHL-16C, the decompression model trusted across the industry. Safety alerts never auto dismiss. Critical numbers stay big, high contrast and glove friendly, because a screen you cannot read in low visibility is not a safety feature. A LOGBOOK WORTH KEEPING Every dive, every breath hold, every snorkel. Full metrics, full history, personal records. The record of your life in the water, not just the deep bits. BRING YOUR OLD LOGBOOK WITH YOU Years of dives somewhere else? Screenshot them and we read them for you. Suunto, Garmin, Shearwater, Subsurface, MacDive, Dive Log, PADI, SSI and most other dive apps, plus photographs of a paper logbook. No exports, no CSV files, no retyping. It happens on your phone, so the images never leave it, and you check every dive before it is saved. LEARN, FROM FIRST BREATH TO ADVANCED Built in courses across scuba, freediving and snorkelling. Sere you are. Track progress, earn completions, unlock advanced material as you go. Nobody starts as an expert. DESIGNED FOR THE DEEP Deep navy, bioluminescent accents, frosted glass. An interface that looks like the water it was made for and reads clearly in any visibility. WHAT IS INSIDE - Live depth, NDL, dive time and heart rate on Apple Watch Ultra - Automatic logging across scuba, freediving and snorkelling - Import your old logbook from another app with a screenshot - Full logbook with stats, history and personal records - Live sea conditions and estimated visibility - Home and Lock Screen sea-conditions widgets - Courses for all three disciplines - Community feed with photos, likes and comments - Buddy finder to connect with sea lovers near you - Privacy controls, including hiding your rough distance WHICH WATCH YOU HAVE Apple Watch Ultra: the full companion. All three modes with er temperature, heart rate and NDL. Sessions log themselves. Apple Watch Series 10 and later: the same three modes, the s automatic logging. Depth is capped at 6 metres by the hardware sensor. Plenty for snorkelling, breath hold practic Every other Apple Watch: Aqua Session. No depth sensor, no problem. Heart rate, compass bearing, GPS map and track, sea conditions and session duration. It will not measure depth, but it will tell you where you are, which way the boat is and what the sea is doing. No Apple Watch at all? Everything else runs on iPhone. The watch is a companion, not a gatekeeper. IMPORTANT This is not a dive computer and must not be used as your primary safety device. Depth is currently tracked to 6 metres, limited by the Apple Watch shallow depth sensor. Full 40 metre scuba tracking is coming in a future update, pending Apple entitlement approval. Always dive within your training and with appropriate equipment. Built with salt water.
Screenshots
Verdict
The clearest difference is ads: Diving Standard at none against Fitsynchronizer's shown. Diving Standard also leads on update cadence (every 4 days vs every 2 months). Fitsynchronizer's advantage is iOS requirement (15.0 vs 17.0). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Fitsynchronizer ships an update every 2 months, Diving Standard every 4 days. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.
| Parameter | Fitsynchronizer | Diving Standard |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPod | iPhone, iPad, Apple Watch — better |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 29 MB | 103 MB |
| Age rating | 17+ | 4+ |
| Developer | Matthieu Boivineau | Mismi Group Limited |
In-app purchases
Fitsynchronizer
No in-app purchases
Diving Standard
No in-app purchases
Questions
Is Fitsynchronizer free?
Is Diving Standard free?
Do Fitsynchronizer or Diving Standard have ads?
Which is updated more often, Fitsynchronizer or Diving Standard?
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