Comparison

FiTin vs Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC

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

Head to head
About

FiTin

Effortlessly log your gym workouts, track progress, and connect with friends for motivation. This app helps you stay consistent and see your strength grow with fast, simple tracking and community features.

Highlights
  • Fast, simple workout logging
  • Log sets, reps, and weight
  • Automatic last workout data
  • Custom exercises and favorites
  • Supersets and drop sets
  • Built-in rest timer
  • Train by muscle group
  • Progress visualization
Features
Read full description

FiTin makes logging your workouts effortless and keeps you motivated by connecting you with friends who lift. Track your sets, reps, and weight in seconds, then watch your strength grow week after week. Whether you're new to the gym or chasing your next personal record, FiTin gives you a simple, fast way to stay consistent and never lose track of your progress. FAST, SIMPLE WORKOUT LOGGING - Log sets, reps, and weight in just a few taps - Your last workout's numbers appear automatically, so you always know what to beat - Classic built-in exercises plus your own custom moves - Save favorites for quick access - Supersets and drop sets supported - Built-in rest timer TRAIN BY MUSCLE GROUP Organize everything around Chest, Back, Shoulders, Arms, Legs, and Abs with clear, color-coded icons. SEE YOUR PROGRESS - A calendar view of every training day - Monthly frequency at a glance - Full history for each exercise - Instant comparison with your last session A FITNESS COMMUNITY THAT KEEPS YOU GOING - Share your workout with a single tap when you're done - See what your friends are training and stay inspired - Like and comment to cheer each other on - Discover people you may know WHO IT'S FOR - Anyone who struggles to stay consistent - Lifters who want to actually feel their progress - People who train harder with friends than alone - Anyone looking for a clean, no-clutter tracker PREMIUM Everything you need to train is free forever. Upgrade to Premium for more: - Full-history volume charts for every exercise - Personal Record (PR) tracking - Access to records older than 6 months SIGN UP IN SECONDS Get started with email, Apple, or Google. Download FiTin and turn every workout into progress you can see. Stronger together. Terms of Use (EULA): https://fitin.co.jp/terms Privacy Policy: https://fitin.co.jp/privacy

About

Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC

This app offers an AI-powered personal trainer that tracks your workouts and meals. It proactively checks in if you miss logging sessions and provides personalized insights. Features include exercise logging, meal analysis, weight tracking, and schedule management.

Highlights
  • Autonomous AI coach
  • Workout logging
  • Meal management
  • Weight and body fat tracking
  • Schedule synchronization
  • In-depth stats and analysis
Read full description

ダイエットや筋トレの記録、複数のアプリを使い分けていませんか? 「Gym Diary(ジムダイアリー)」は、筋トレ記録・カロリー計算・体重管理をこれ一つで完結できる、オールインワン型のフィットネス&食事管理アプリです。 あなた専属のAIが毎日の記録に寄り添い、アドバイスや食事分析で目標達成を全力でサポート!一人では挫折しがちな毎日の体重管理やダイエット、ジムでのワークアウトも、Gym Diaryと一緒なら楽しく続けられます。 Gym Diaryの主な機能と特徴 ■ 筋トレ・食事・体重をこれ一つで一元管理 日々の体重の増減、摂取カロリー、そしてジムでのワークアウトや自宅での筋トレ記録。バラバラになりがちな大切なデータを、このアプリ一つでシームレスに記録・振り返りができます。日々の変化がカレンダーやグラフで見えるので、ヘルスケアやダイエットのモチベーションアップに直結します。 ■ AIトレーナーがあなたのフィットネスを伴走 ただの筋トレメモや食事記録ではありません。AIがあなたの頑張りを褒めてくれたり、的確なアドバイスを提供します。パーソナルトレーナーのようにチャット形式で楽しくやり取りができ、ジム通いや家トレ、ダイエットのモチベーションが途切れません。毎日の記録が日記のように楽しくなります。 ■ AIが食事を瞬時に分析&カロリー計算 食べたものを記録するだけで、AIがカロリーやPFC(タンパク質・脂質・炭水化物)バランスを自動で分析し、面倒なカロリー計算を強力にサポート。見やすい栄養素のグラフで、日々の食事管理がグッと簡単になります。 ■ 豊富なワークアウトメニュー&カスタマイズ 充実したトレーニングメニューを標準搭載。さらに、自分だけのオリジナルメニューも作成できるため、ダイエット目的の初心者から本格的なトレーニーまで幅広く対応します。日々の筋トレメモとしても大活躍! ■ ホーム画面ウィジェット対応 スマホのホーム画面にウィジェットを配置すれば、アプリを開かずに一発で記録画面へアクセス。毎日の「記録する」というハードルを極限まで下げ、ダイエットやフィットネスの習慣化を助けます。 こんな方におすすめ ・体重管理、カロリー計算、筋トレ記録を一つの食事管理アプリにまとめたい方 ・一人だとダイエットやジムでのワークアウトがなかなか続かない方 ・毎日の摂取カロリーやPFCバランスをしっかり管理したい方 ・自分に合ったフィットネスメニューを作成し、筋トレメモとして使いたい方 ・記録のモチベーションを維持して、楽しく健康的なボディメイクをしたい方 Gym Diaryは、あなたの理想のカラダづくりをサポートする最高のパートナーです。 今すぐダウンロードして、AIトレーナーと一緒に新しいフィットネス習慣を始めましょう! 英語対応について(For Global Users) Gym Diary is fully localized in English! It is an all-in-one AI fitness app. Perfect for your daily workout, health management, and diet. Use it as your smart calorie tracker and workout tracker!

Screenshots

FiTin4 screens
Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC4 screens

Verdict

The call

The clearest difference is ads: FiTin at none against Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC's shown. FiTin also leads on update cadence (every 4 days vs every 2 weeks). Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC's advantage is review sentiment (100% vs 69%). On price, in-app purchases, monetization model 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. FiTin sells 3 in-app purchases, starting at $1.99 per month and Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

FiTin ships an update every 4 days, Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC every 2 weeks. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.

Scorecard3 real differences · 5 level
FiTin versus Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC: the parameters behind the verdict, then further details
ParameterFiTinGym Diary|筋トレ記録・ジム・食事管理アプリ・PFC
PriceFreeFree
Positive reviews69.2% of reviews100.0% of reviews — better
Update frequencyEvery 4 days — betterEvery 2 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhoneiPhone
Requires iOS16.416.0 — better
Further details — not scored
Size135 MB88 MB
Age rating4+4+
DeveloperFiTin Inc.Yuki Yoshioka

Customer experience

FiTin

Written reviews13 reviews
Positive69.2%
Neutral7.7%
Negative23.1%

Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

FiTin

Subscriptions2
  • プレミアムプラン(月額)$1.991 Month
  • プレミアムプラン(年額)$22.991 Year
One-time1
  • プレミアムプラン(生涯)$59.99
4 purchases

Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC

Subscriptions4
  • Premium Weekly Plan7 Days trial$4.997 Days
  • Premium Monthly Plan7 Days trial$9.991 Month
  • Gym Diary Premium - Monthly Plan$9.991 Month
Show 1 more
  • Premium Annual Plan7 Days trial$49.991 Year

Questions

Is FiTin free?
FiTin is free to download, with in-app purchases available.
Is Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC free?
Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC is free to download, with in-app purchases available.
Do FiTin or Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC have ads?
Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC shows ads; FiTin does not.
Which is updated more often, FiTin or Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC?
FiTin ships an update every 4 days, and Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC every 2 weeks. Most recently, FiTin was updated on November 8, 2026 and Gym Diary|筋トレ記録・ジム・食事管理アプリ・PFC on November 9, 2026.

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