Saltymask.com vs Hello Okinawa
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Saltymask.com
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水下30米,台灣最大潛水平台! 全新app除了海洋生態的潛水節目,還包辦你潛水所有需求! 「看節目」 - 想看海龜/鯊魚等大小生物和繽紛的珊瑚 「找潛點」 - 想找臺灣或馬爾地夫/帛琉等國內外潛點資訊 「潛水紀錄」 - 想寫每一趟潛水看到的生物/ 溫度/ 感受 「潛水論壇」 - 想談關於潛水安全/ 專業知識/ 八卦討論 「潛水新知」 - 想搜最新的潛水新聞/議題 「資源下載」 - 想載湛藍的海洋/ 粉紅色的海葵當手機桌布 - 即將推出 敬請期待 - 「潛水考照/ 體驗」 「揪團」 「潛水旅遊」 「全新商城」 身邊沒人可以分享你潛水的快樂嗎?今天遇到Mola mola卻無處炫耀嗎?想要成為海洋小博士卻沒有知識平台嗎?市面上教練、潛店那麼多,卻苦無評價可以參考嗎?想要參加潛旅卻沒潛伴嗎?水上空虛寂寞,水下又覺得冷嗎? 來,都來,水下30米提供海人們專屬的天地! *持續在背景執行 GPS 會大幅降低電池續航力。除非你授予相關權限 (即開啟需要使用 GPS 的選用功能),否則本APP不會在背景執行 GPS。
Hello Okinawa
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Hello Okinawa helps you pick where to go, get there, and stay ready. Car rental is for Okinawa; rankings, places, weather and guides cover Okinawa, Fukuoka, Osaka and Kyoto. ■ Rankings 13 Okinawa lists, grouped as Food, Sights and Shopping, plus picks by situation (with kids, rainy day, evening). Ten are places: soba, steak, burger, taco rice, Okinawan dishes, shabu-shabu, cafés, beaches, scenic & sunset spots, local picks. Three are things to buy: drugstore, souvenirs & local specialties, convenience-store shopping. Each list ranks 15 entries (konbini: 10), every one with a short note and most with a price band. Some entries open their place page; for other places, Directions hands off to your maps app. In the Korean UI, some entries list Korean blog posts (provided by NAVER Search); each post opens on its own blog. Fukuoka (8 lists), Osaka (8) and Kyoto (11) have lists of local food, sights and souvenirs, chosen after checking official and tourism sources. ■ Hire a vehicle in Okinawa Pick your dates on Okinawa Main Island to see what is free, from several rental companies in one place, or browse by theme (Hotel, Trunk, Budget, Luxury, Family, Couple, New). Add cover and extras, read the rental company's terms (if a company has not published them yet, the screen says so), then settle by card on Stripe's secure page. In the top-right menu, every reservation keeps the same five actions, and any difference or refund is shown up front. Licenses are verified at the counter. ■ Also inside A home screen with today's date, weather and exchange rate for the area you choose; forecasts, a yen converter (KRW, TWD, USD, HKD, CNY), Okinawa festivals for all twelve months, guide articles; places on a full-screen Apple map with search, filters and a pull-up list of what is on the map, nearest first (Fukuoka, Osaka and Kyoto too); in Okinawa, a map and list of only photo spots or only live cameras; a transit guide, and emergency info that works with no signal. ■ Log in only to reserve Use email, Apple or Google. Account deletion is built in. Four languages: EN, JA, KO, zh-Hant. NAVER™ is a trademark of NAVER Corp.
Screenshots
Verdict
The clearest difference is iOS requirement: Saltymask.com at 12.0 against Hello Okinawa's 15.0. On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Saltymask.com ships an update every 6 days, Hello Okinawa every 4 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.
| Parameter | Saltymask.com | Hello Okinawa |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 days | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 200 MB | 35 MB |
| Age rating | 17+ | 4+ |
| Developer | Vision Creator Production Co. | Hakjin Kim |
In-app purchases
Saltymask.com
No in-app purchases
Hello Okinawa
No in-app purchases









