Comparison

Koyomi vs Progress

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

Head to head
About

Koyomi

This app displays traditional Japanese calendars, including lunar phases, zodiac signs, and auspicious days. It integrates with your existing iOS calendar and offers features like printing and PDF sharing. Perfect for those who appreciate traditional calendrical information.

Highlights
  • Standard calendar import and display
  • Detailed Japanese calendar view (zodiac, lunar, etc.)
  • Moon phase and age display
  • Calendar printing and PDF sharing
  • Widget support
  • Monthly/yearly/list calendar views
  • Sunrise and sunset times
Features
Read full description

機能  ・標準カレンダー読込、表示  ・暦を表示   ・日付・曜日・干支・九星・旧暦・潮名・歴日・終日・二十八宿・中段・下段  ・月相、月齢表示  ・カレンダーの印刷  ・「ロルト」でカレンダーの印刷  ・年齢早見表  ・カレンダーをPDFとして共有(Open in…/アクティビティーで他のアプリにPDFを渡せます)  ・ウィジェットに対応(通知センターの「今日」に表示します)  ・月間/年間/一覧カレンダー表示  ・暦日の検索機能(二十四節気・七十二候・雑節・選日・干支・祝日)  ・日の出、日の入り時刻  ・横表示機能 日本人が古くから利用してきた暦には干支・九星・六曜・二十四節気などの歴日があります。 大安は婚礼、旅行、引越、開店などに吉の日 仏滅は全てのことに悪い凶とされる日 先勝は急ぐことや、訴訟などに吉の日、ただし午後からは凶 先負は静かにするのが吉の日 勝負ごとや急用はさけた方がよい日、ただし午後は吉 友引は朝晩は吉の日、正午だけが凶の日、葬式をつつしむ日 赤口は何事をするのにも凶とされる日 ただし正午頃は吉の日 干支は十干と十二支の組み合わせからなる六十干支から成り立ち六十年周期で、日取りや方位などを判断する基になります。 二十四節気は太陽の通り道を24等分した分割点の日を節気とし、陰暦では季節にずれが生じるため季節の指標として用いられました。 そんな日本人が利用している暦をiPhoneで簡単に表示できるのが「こよみ」アプリです。暦なんて気にしないよ、 と言うひとでも、結婚式の日がふさわしい日かどうか知っていた方が知らないよりは良いですよね? 効率や成果を重要視する現代ですが、「はじまり」の日を縁起の良い日からはじめてみませんか? 使い方は簡単!アプリを起動するだけで、月の全ての干支、九星、六曜、二十四節気、その他の雑節が簡単に見られます。 それに、iOSの標準カレンダーも読み込めるので、予定と暦が一度に確認出来ます。 カレンダーの印刷や共有ができます。 watchOSに対応しています。

About

Progress

Easily track your progress and countdown to important dates. Set custom periods and visualize remaining days at a glance. Utilize home screen widgets for quick access to your progress updates.

Highlights
  • Set custom periods
  • Display days remaining
  • Home screen widgets
  • Progress visualization
  • Countdown timer
Features
Read full description

【Check your progress !! 】 Progress is a simple application with only one function. You can display the current progress and the number of days remaining by setting the period. 【Check at a glance from the home screen】 You can also set Widget, which is a new feature from iOS14. This allows you to easily check your progress from the home screen.

Screenshots

Koyomi4 screens
Progress4 screens

Verdict

The call

The clearest difference is rating: Koyomi at 5.0 against Progress's 4.0. Koyomi also leads on price ($1.99 vs $3.99) and device support (5 vs 1). Progress's advantage is update cadence (every 2 days vs every 5 weeks) and review sentiment (83% vs 58%). On ads, in-app purchases and monetization model 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

Koyomi costs $1.99 and Progress $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Koyomi holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Progress has 30 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 58% of Koyomi's written reviews are positive against 83% of Progress's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Koyomi ships an update every 5 weeks, Progress every 2 days. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

Scorecard7 real differences · 3 level
Koyomi versus Progress: the parameters behind the verdict, then further details
ParameterKoyomiProgress
Price$1.99 — better$3.99
Rating5.0 (2 ratings) — better4.0 (30 ratings)
Positive reviews58.3% of reviews83.3% of reviews — better
Number of ratings230 — better
Update frequencyEvery 5 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod, Mac, Apple Watch — betteriPhone
Requires iOS9.0 — better26.0
Further details — not scored
Size18 MB5 MB
Age rating4+4+
DeveloperiWare Inc.Gaku Sakai

Customer experience

Koyomi

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews36 reviews
Positive58.3%
Neutral19.4%
Negative22.2%

Progress

All ratings30 ratings
Positive76.7%
Neutral3.3%
Negative20.0%
Written reviews30 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

In-app purchases

None

Koyomi

No in-app purchases

None

Progress

No in-app purchases

Questions

Is Koyomi free?
Koyomi costs $1.99, with no in-app purchases.
Is Progress free?
Progress costs $3.99, with no in-app purchases.
Which has better reviews, Koyomi or Progress?
Koyomi is rated higher. Koyomi averages 5.0 out of 5 from 2 ratings, while Progress averages 4.0 from 30 ratings.
Do Koyomi or Progress have ads?
Neither Koyomi nor Progress shows ads.
Which is updated more often, Koyomi or Progress?
Koyomi ships an update every 5 weeks, and Progress every 2 days. Most recently, Koyomi was updated on November 1, 2026 and Progress on October 29, 2026.

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