Comparison

Study Buddy Timer vs もぐスタ

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

Head to head
About

Study Buddy Timer

This app helps you focus on studying with a virtual companion that grows as you do. It offers features like customizable timers, study plans, ambient sounds, and progress tracking. You can even study with a friend and see each other's progress.

Highlights
  • Virtual study buddy that grows with you
  • Customizable timers and Pomodoro support
  • Study plans and calendar integration
  • Ambient study sounds
  • Lock Screen and Dynamic Island integration
  • Study with a friend feature
  • Progress tracking and weekly reviews
Features
Read full description

Study with a chill buddy that grows and talks on tap. Pair with a friend, too. No rankings. Tap "Start", then "Stop" when you finish. No setup needed. The timer keeps running even if you close the app, and you can pause anytime. Every minute you study helps your buddy grow and level up. Taking a break won't shrink your buddy. Time your study without opening the app - While the timer runs, the elapsed time and your buddy appear on the Lock Screen and in the Dynamic Island, with a ring that fills as you study - Start and stop from your Home Screen widget - Start and stop from Control Center or the Action button (iOS 18 or later) - Hold your iPhone to an NFC tag on your desk to start or stop (Shortcuts), or let a Focus do it - Forgot to stop? After 3 hours you get one reminder, and you can adjust the end time later Plan what to study today - Study plans: list what to study today, then tap "Study this" to pick it and its subject before you start - Paste a study plan made with AI or anywhere else to add many plans at once - Pick events from your calendar, or connect a Reminders list - Unfinished plans carry over to the next day. After 7 days, they move to "Someday" Ambient sounds while you study - Light rain outside, forest leaves, pencil on paper, and a quiet library. Sounds unlock as your buddy levels up - They mix with music from other apps and fade out when you pause or take a break Keep going - Pomodoro: 25 minutes of focus, 5 of rest. Change the times anytime - Daily study time goal: set a goal in minutes and see how much is left - Current goal: write what you're working toward in one line - Exam countdown: see the days left on the home screen and widgets, with reminders before the exam - Summary card: after you stop, see the EXP you earned, today's total, and your streak - Share today's study as a single image - Focus rating: mark each session "Not great", "OK", or "Great" (optional) - Study calendar: days you reach your goal get a leaf - Weekly review: at the end of each week, look back at your total and the subject you studied most - Study tips: 12 ideas backed by research See what you studied, and how much - Choose a subject before you start (or just start without one) - Forgot the timer? Add records up to 30 days back - Weekly and monthly charts show time and share by subject - Add textbooks and workbooks to see your time by material - Fix the time, subject, note, or focus rating of any record later - Export your records as CSV - iCloud sync and backup: switch iPhones and get your sessions and buddy back by turning on sync with the same Apple ID Study Pair (Study Buddy Premium) Connect with one partner through an invite link and see their study time today and whether they are studying right now. Grow one buddy with the time you both put in. On days when both of you do your part, it's a "pair day" and your buddy grows more. Choose a "cheer" role instead of studying. One cheer a day is enough to take part, which makes it a gentle way to support someone in your family. Your partner only sees study-time totals. They cannot see when you studied, your subjects, or your notes. Only the person who creates the pair needs Premium. Invited partners join for free. Study Buddy Premium Auto-renewing monthly or yearly plans include Apple Watch timing, past weeks and monthly charts, earlier calendars, Study Pair creation, two extra sounds, up to 5 exams. Timer, records, buddy, and iCloud sync stay free. Existing Pro owners keep all benefits permanently and can restore without subscribing. Cancel in subscription settings. No ads. Your records are yours There are no ads. Your study records are saved on this iPhone and never sent to our servers. If you turn on "Sync with iCloud", they are also saved in your own iCloud, and the developer cannot see them. Data you share in a Study Pair is stored in the pair creator's iCloud. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

もぐスタ

Features
Read full description

勉強した時間が「ごはん」になり、あなたの相棒「もぐ」が育っていく—— そんな学習記録アプリです。 ■ 記録するだけで育つ 勉強を始めるときはワンタップ。タイマーで計測した時間が、そのまま相棒のごはんになります。ごはんを食べたぶんだけ、もぐは少しずつ大きく育っていきます。計測中は、他のアプリも触れないので集中できます。 ■ 試験日から逆算するチャレンジ 資格試験や受験など、目指す日が決まっている方は、試験日を設定すると1日あたりの目標勉強時間が自動で計算されます。計画通りに続ければ、試験日にちょうど相棒が最終形態まで育つように設計されています。試験日が決まっていない方は「30日チャレンジ」として気軽に始めることもできます。 ■ 育てた思い出は消えない 無事に育て上げた相棒は「おもいでのしま」に住み着きます。次の相棒を迎えたあとも、いつでも会いに行くことができます。育てた期間や積み上げた勉強時間も一緒に記録されます。 ■ ひとりでも、続けやすく アカウント登録は不要です。アプリを開くとすぐに使い始められ、途中でスマホを機種変更する場合も「ひきつぎコード」を使えば、これまでの記録と相棒をそのまま新しい端末に引き継げます。 ■ 広告なし 勉強に集中してほしいので、広告は一切表示されません。 コツコツ続けることが苦手な方も、もぐと一緒なら、今日からまた1歩を記録してみませんか。

Screenshots

Study Buddy Timer4 screens
もぐスタ4 screens

Verdict

The call

The clearest difference is in-app purchases: もぐスタ at none against Study Buddy Timer's 2. もぐスタ also leads on iOS requirement (15.1 vs 17.5). Study Buddy Timer's advantage is update cadence (daily vs every 3 days). On price, 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. Study Buddy Timer sells 2 in-app purchases, starting at $1.99 per month. もぐスタ asks for nothing beyond the download.

UpkeepUpdate frequency

Study Buddy Timer ships an update daily, もぐスタ every 3 days. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 6 level
Study Buddy Timer versus もぐスタ: the parameters behind the verdict, then further details
ParameterStudy Buddy Timerもぐスタ
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyDaily — betterEvery 3 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS17.515.1 — better
Further details — not scored
Size13 MB38 MB
Age rating4+4+
DeveloperZEC Inc.asaki nakama

In-app purchases

2 purchases

Study Buddy Timer

Subscriptions2
  • Study Buddy Premium Monthly$1.991 Month
  • Study Buddy Premium Yearly7 Days trial$11.991 Year
None

もぐスタ

No in-app purchases

Questions

Is Study Buddy Timer free?
Study Buddy Timer is free to download, with in-app purchases available.
Is もぐスタ free?
もぐスタ is free to download, with no in-app purchases.
Do Study Buddy Timer or もぐスタ have ads?
Neither Study Buddy Timer nor もぐスタ shows ads.
Which is updated more often, Study Buddy Timer or もぐスタ?
Study Buddy Timer ships an update daily, and もぐスタ every 3 days. Most recently, Study Buddy Timer was updated on November 9, 2026 and もぐスタ on November 5, 2026.

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