Comparison

FirstSeed Calendar vs AIrClock

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

Head to head
About

FirstSeed Calendar

A powerful scheduling app that manages both events and reminders. It offers innovative calendar views, interactive widgets for various iOS versions, and seamless syncing with Apple's Calendar and Reminders apps. An optional paid upgrade unlocks advanced features like natural language event processing and drag-and-drop functionality.

Highlights
  • Interactive and lock-screen widgets
  • Full-featured month, week, and list views
  • Event and reminder management
  • Natural language event processing (paid)
  • Drag & drop event manipulation (paid)
  • Apple Watch support
  • Syncs with Apple Calendar and Reminders
Features
Read full description

FirstSeed Calendar keeps your events and reminders in one place. It’s fast, flexible, and built so you can handle most tasks with one hand. Features: - Month view that handles everyday tasks with one hand - Week view that fits the whole week on one screen, with no vertical scrolling - Day, list, and year views, including a list view laid out like a paper planner - Events and reminders together in one calendar - Move or duplicate events to multiple dates at once - Respond to invitations right from the app - Daily Summary notifications for today’s or tomorrow’s events - Home Screen, Lock Screen, StandBy, and interactive widgets, including a timeline widget - Control Center controls - Apple Watch app with complications - Dark mode, custom themes, and colors for weekends and holidays - Designed for Liquid Glass, with clear and tinted icons and widgets Pro: One-Time Purchase, No Subscription: - Sync directly with Google Calendar, including per-event colors - Trash: recover deleted events and reminders for up to 30 days - Automatic backups of your calendar data - Quick Event: create events by typing naturally, like “Lunch with Bob at noon tomorrow” - Full-screen alarms for events you can’t miss - Weather forecasts in your calendar - Week numbers, time zones, and event history - Drag and drop to reschedule events - Templates for events you create often - Calendar sets to show or hide groups of calendars with one tap - Import and export ICS files - Customize the Apple Watch app - Alternate app icons - No ads Sync: FirstSeed Calendar works with Apple’s Calendar and Reminders apps, so your events and reminders stay in sync across all your devices through iCloud, Google, Exchange, and any other accounts you’ve added in Settings.

About

AIrClock

Features
Read full description

ネオミニマルなデザインで、毎日の時間管理をもっとスマートに。 AIrClock は、アラーム・タスク・メモ・タイマー・時報をひとつにまとめた時間管理アプリです。落ち着いたダークテーマとネオンカラーの洗練されたUIで、必要な機能を迷わず使えます。 主な機能 ・タグで整理できるアラーム 「仕事」「夜勤」などタグ別にアラームを分類 曜日ごとの繰り返し設定、「○分後」のクイック設定に対応 アラーム音は端末の音源から自由に選択 停止するまで鳴り続ける設計。音量ボタン・ワイヤレスイヤホンの操作でも止められます ・タグ・曜日で管理できるタスク タグ別にタスクを分類し、あとからいつでも変更可能 期日(日付・時刻)を設定してリマインド 「月・水・金だけ」など曜日を指定すれば、対象外の日は自動で完了扱いに ドラッグ、またはタップした順に並べ替え ・メモ 思いついたことをその場でサッと記録 タイムスタンプ付きで後から見返しやすい ピン留めで重要なメモを上部に固定 ・音声入力(AI) 話しかけるだけでアラーム・タスク・メモを自動登録 1回の発話で複数の予定をまとめて登録 「30分後に会議」のような相対的な時刻表現にも対応 無料プラン(ご自身のOpenAI APIキー)とプレミアムプラン(APIキー不要)の両方に対応 ・3モードのタイマー 1回きり/リピート/ポモドーロ(作業・休憩の自動切り替え) モードごとに最後に使った時間を記憶 ・時報 毎正時(と30分ごと)に音でお知らせ シンプルだけど頼れる。AIrClock で時間を味方につけましょう。 利用規約: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

FirstSeed Calendar4 screens
AIrClock4 screens

Verdict

The call

The clearest difference is ads: AIrClock at none against FirstSeed Calendar's shown. FirstSeed Calendar's advantage is device support (3 vs 1). On price, update cadence, in-app purchases and iOS requirement 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. FirstSeed Calendar sells 2 in-app purchases, starting at $2.99 per month and AIrClock sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

FirstSeed Calendar ships an update every 8 days, AIrClock every 9 days. The most recent releases landed on October 26, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 8 level
FirstSeed Calendar versus AIrClock: the parameters behind the verdict, then further details
ParameterFirstSeed CalendarAIrClock
PriceFreeFree
Rating4.7 (336 ratings) — better—
Positive reviews80.5% of reviews—
Number of ratings336 — better—
Update frequencyEvery 8 days — betterEvery 9 days
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS26.026.0
Further details — not scored
Size67 MB3 MB
Age rating4+4+
DeveloperFirstSeed Inckazuaki morooka

In-app purchases

2 purchases

FirstSeed Calendar

Subscriptions1
  • Monthly Donation$2.991 Month
One-time1
  • Pro Version$9.99
2 purchases

AIrClock

Subscriptions2
  • プレミアム月額プラン$1.991 Month
  • プレミアム年額プラン$19.991 Year

Questions

Is FirstSeed Calendar free?
FirstSeed Calendar is free to download, with in-app purchases available.
Is AIrClock free?
AIrClock is free to download, with in-app purchases available.
Do FirstSeed Calendar or AIrClock have ads?
FirstSeed Calendar shows ads; AIrClock does not.
Which is updated more often, FirstSeed Calendar or AIrClock?
FirstSeed Calendar ships an update every 8 days, and AIrClock every 9 days. Most recently, FirstSeed Calendar was updated on October 26, 2026 and AIrClock on October 10, 2026.

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