Comparison

Fishtank vs Sea Focus

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

Head to head
About

Fishtank

Enhance your concentration with a unique approach to productivity. This app gamifies focus sessions, allowing you to build a virtual aquarium filled with discovered fish. Earn rewards and track your progress as you stay on task.

Highlights
  • Customizable focus session lengths
  • App blocking for distraction prevention
  • Ambient background options
  • Progress tracking
  • Earn mystery lootboxes
  • Discover and collect rare fish
  • Virtual aquarium simulation
Read full description

Dive into a new way of staying focused with Fishtank, where every focused moment helps you build your own mesmerizing aquatic world. This isn't just another focus app – it's a delightful blend of productivity and collection that turns your dedication into discovery. - Choose your focus session length - App blocking feature keeps you on track - Beautiful ambient backgrounds - Elegant progress tracking - Earn mystery lootboxes upon completing focus sessions - Discover fish of varying rarities - Watch your collected fish swim freely in your tank

About

Sea Focus

Features
Read full description

Focus like the ocean — calm, deep, and steady. Sea Focus is an ocean-themed focus timer and task app that turns every work session into a guided underwater journey. Instead of a generic countdown, you start with a simple ritual: choose a route, pick your station, set a focus mode, add sound, and cast off into deep work. Use Sea Focus for study, writing, reading, deep work, and distraction-free focus blocks throughout the day. WHAT YOU CAN DO - Start route-based sessions like Lagoon Route, Reef Edge, and Open Current - Choose a focus mode: Focus, Study, Work, Read, Write, or your own - Attach a task with subtasks and tags for lightweight task tracking - Layer in ambient sound like Ocean Waves and White Noise - Switch between live route graphics, ocean videos, and your own backgrounds - Build a Pomodoro flow with auto-breaks and "Another round?" - Block distracting apps with Focus Shield during active journeys - Track streaks, daily minutes, weekly charts, monthly trends, and best streak - Set daily goals with a visual progress ring - See your countdown on Live Activities, widgets, and StandBy - Get a gentle daily reminder to start your next session FREE - Preset routes (25, 45, 60 min) - 2 ocean biomes and 2 sounds - Up to 3 tasks and 3 tags - 7 days of history, basic stats, and streaks - Daily reminders and Home Screen widgets SEA FOCUS PRO - Custom durations (5–120 min) - All biomes and depth zones - All premium sounds - Unlimited tasks and tags - Full history and advanced stats - Focus Shield distraction blocking - Custom focus modes - Custom photo and video backgrounds - Live Activity, daily and weekly goals If you want a focus app that feels more immersive than a plain Pomodoro timer but still works as a practical daily tool, Sea Focus is built for that middle ground. TERMS & CONDITIONS Use of Sea Focus is subject to your agreement to: - Apple's Standard End-User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ - Our Terms of Service: https://kidomido.com/terms-of-use - Our Privacy Policy: https://kidomido.com/privacy-policy SUBSCRIPTION Sea Focus Pro is an auto-renewable subscription that unlocks all premium biomes, sounds, Focus Shield app blocking, custom backgrounds, full history, and advanced stats. You can cancel anytime by turning off auto-renewal in your App Store account settings. This must be done at least 24 hours before the end of a free trial or subscription period to avoid being charged. Cancellation takes effect the day after the current period ends, and you return to the free tier. Contact us with any feedback at info@kidomido.com

Screenshots

Fishtank4 screens
Sea Focus4 screens

Verdict

The call

The clearest difference is update cadence: Fishtank at every 4 days against Sea Focus's every 5 months. On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fishtank sells 4 one-off in-app purchases and Sea Focus sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Fishtank ships an update every 4 days, Sea Focus every 5 months. The most recent releases landed on September 30, 2026 and October 13, 2026 respectively.

Scorecard1 real difference · 9 level
Fishtank versus Sea Focus: the parameters behind the verdict, then further details
ParameterFishtankSea Focus
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 4 days — betterEvery 5 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.217.2 — better
Further details — not scored
Size5 MB36 MB
Age rating4+4+
DeveloperJiajun ZhangCevahir Turgut

In-app purchases

4 purchases

Fishtank

One-time4
  • Platinum Lootbox$0.99
  • Unlock Backgrounds$1.99
  • Speed Boost$1.99
Show 1 more
  • 10x Platinum Lootboxes$6.99
3 purchases

Sea Focus

Subscriptions3
  • Weekly: Ocean Focus Timer Weekly$3.997 Days
  • Monthly: Deep Work Focus Monthly$6.991 Month
  • Ocean Focus Deep Work Shield Yearly$24.991 Year

Questions

Is Fishtank free?
Fishtank is free to download, with in-app purchases available.
Is Sea Focus free?
Sea Focus is free to download, with in-app purchases available.
Do Fishtank or Sea Focus have ads?
Neither Fishtank nor Sea Focus shows ads.
Which is updated more often, Fishtank or Sea Focus?
Fishtank ships an update every 4 days, and Sea Focus every 5 months. Most recently, Fishtank was updated on September 30, 2026 and Sea Focus on October 13, 2026.

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