Comparison

Timemoa vs 深海自習室

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

Head to head
About

Timemoa

Features
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What's your hour worth? Some days, just sitting down at your desk is the hardest part. Some days you wonder, "Will this studying ever end?" Timemoa is a study timer built for those days. It shows you exactly what today's focus is worth. "If becoming a doctor is worth $1,000,000, what is one hour of studying worth right now?" $1M, 2 years, 8 hours a day, and your hour is worth $173. From the moment you start focusing, that value stacks up in your Vault. ◆ The value of your hour Divide your goal's value by your investment period and daily target hours, and that's what your hour is worth right now. Not sure what number to use? The value helper only needs your expected salary and working years. Now you have a reason to start. ◆ Focus, and it adds up The moment you start the focus timer, value accumulates in real time. Watch our signature hourglass fill your hour with falling golden sand. Plain focus or Pomodoro (25 min focus · 5 min rest): earn at your own rhythm. ◆ Showcase: a medal for consistency Every 100 hours of focus adds a gold bar to your Showcase. Hours you've already collected count retroactively. When you can see "I've done this much," you can sit down again tomorrow. Share your gold bars as an image. Consistency is worth showing off. ◆ It's okay to rest Rest is part of studying. We show the value spent on rest, without blame. If the deduction feels heavy, switch it to half or none. With none, your Vault stays untouched while you rest. ◆ Vault & streaks Today's earned value, Vault balance, a 7-day chart. Hit your daily goal and your streak continues. Streak Shield: even on a day you miss your goal, it spends one day's value to protect your streak. ◆ Time adds up even without opening the app · Lock Screen & Control Center buttons: start without unlocking · Home & Lock Screen widgets: today's value and goal gauge, start/stop right from the widget · Live Activity & Dynamic Island: your growing value, always in sight · Apple Watch: check, start, and finish from your wrist · Hourly notifications celebrate today's progress ◆ Made for · Students with a make-or-break exam ahead: college entrance, med/law school, civil service, certifications · Professionals preparing a career change after work · Anyone who needs "how much did I earn today?" more than "how long did I study?" · People for whom starting is the hardest part ◆ Your records are yours All data stays on your device and in your own iCloud. · iCloud backup: switch devices and restore in one tap · No login, no ads, no data collection ※ All amounts shown in the app are virtual motivational values that translate your goal into the value of your time. There are no real-money deposits, payments, or transfers. It starts with this hour. Prove what your time is worth. Support: https://pherd94.github.io/timemoa-privacy/support/

About

深海自習室

Features
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勉強した時間だけ、深く潜る。 アプリを前面に置いているあいだだけ、深度が伸びていきます。1分で1m。25分潜ると自動で浮上し、5分の減圧停止に入ります。停止のあいだは深度が進みませんが、浅くもなりません。休んでも、それまでに潜った深さは失われません。 潜っていると、深海生物と出会います。表層のマンボウから、中深層のデメニギス、漸深層のコウモリダコ、超深海層のマリアナスネイルフィッシュまで、実在する100種。深く潜るほど珍しい生き物が現れます。学名も生息深度も本物です。 図鑑は水深0mから10,911mまでを1本の縦断面として描いています。見つけた生き物は実際の生息深度の位置に並び、まだ見ぬ生き物は影のまま深部に残ります。埋まっていない深さがそのまま、これから潜る先になります。 深海タブでは、いま自分と近い深さを潜っている人の灯りが見えます。名前は自動でつき、あとから変えられません。累積・今週・今日の3つの順位があり、今週と今日は毎週・毎日0に戻ります。 ストリークはありません。連続日数を数えないので、途切れて困ることもありません。深さの上限もありません。10,911mのチャレンジャー海淵を越えると、層の名は「未踏」になります。 できること ・25分の潜航と5分の減圧停止(設定で潜航 25/40/50分、停止 3/5/10分) ・実在する深海生物100種の図鑑 ・熱水噴出孔と鯨骨生物群集の固有種 ・週間・月別の記録と、直近30日の深度の推移 ・深度が近い人の灯りと、累積・今週・今日の順位 ・到達深度とよく会った生き物を載せた共有カード ・深度から合成される深海の音 料金について 広告つきで無料です。¥800の買い切りで広告が消え、装備の耐圧限界(無料枠は4,000m)がなくなります。潜航時間そのものに制限はなく、無料のままでも無制限に使えます。図鑑の100種・深海・記録も、はじめから無料です。

Screenshots

Timemoa4 screens
深海自習室4 screens

Verdict

The call

The clearest difference is in-app purchases: Timemoa at none against 深海自習室's 1. 深海自習室's advantage is iOS requirement (18.0 vs 26.0). On price, update cadence, ads 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. 深海自習室 sells 1 one-off in-app purchase. Timemoa asks for nothing beyond the download.

UpkeepUpdate frequency

Timemoa ships an update every 3 days, 深海自習室 every 2 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 4 level
Timemoa versus 深海自習室: the parameters behind the verdict, then further details
ParameterTimemoa深海自習室
PriceFreeFree
Update frequencyEvery 3 daysEvery 2 days — better
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS26.018.0 — better
Further details — not scored
Size15 MB7 MB
Age rating4+4+
DeveloperTAEHYEON KOOKAZUSA NAOI

In-app purchases

None

Timemoa

No in-app purchases

1 purchases

深海自習室

One-time1
  • 装備を新しくする$4.99

Questions

Is Timemoa free?
Timemoa is free to download, with no in-app purchases.
Is 深海自習室 free?
深海自習室 is free to download, with in-app purchases available.
Do Timemoa or 深海自習室 have ads?
Both Timemoa and 深海自習室 show ads.
Which is updated more often, Timemoa or 深海自習室?
Timemoa ships an update every 3 days, and 深海自習室 every 2 days. Most recently, Timemoa was updated on October 24, 2026 and 深海自習室 on October 25, 2026.

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