Comparison

Alarm & Timer vs Lumo Calender

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

Head to head
About

Alarm & Timer

This all-in-one clock app offers customizable alarms, timers, and stopwatches in a clean interface. It features privacy-friendly headphone-only alarms and advanced scheduling options. Personalize themes, fonts, and time displays for a tailored experience.

Highlights
  • Unlimited customizable alarms
  • Multiple simultaneous timers
  • Precise stopwatch with lap times
  • World clock with multiple time zones
  • Customizable themes and fonts
  • Privacy-friendly headphone alarms
  • Advanced scheduling and repeat options
Features
Read full description

Simple, powerful, and customizable. This all-in-one clock app combines Alarm, Timer, and Stopwatch functions into a clean, intuitive interface. Privacy-friendly: When headphones are connected, the alarm sounds only through the headphones, not the device speakers. By making advanced features optional, we maintain a minimalist design while meeting a wide range of user needs. [General] Customization: Color themes, "My Theme" creation, and adjustable font sizes. Typography: Choose from system fonts, specialized clock fonts, or even add your own custom fonts. Time Display: Toggle between 12/24-hour formats, customize 12:00 vs. 0:00 display, and enable/disable leading zeros (e.g., 09:00 vs. 9:00). [Clock] Dual analog and digital display with extensive layout options. Design: Multiple dial designs and support for custom image/video backgrounds. Visibility: Toggle seconds, choose second hand movement (Ticking vs. Smooth), and customize date formats/languages. Dynamic Layout: Hide the status bar, tab bar, or settings button for a cleaner look. Digital-only mode available in landscape orientation. Hourly Chime: Use simple presets or create a fully customized hourly schedule. World Clock: View multiple cities and time zones simultaneously in a convenient list. [Alarm] Set unlimited alarms with full background notification support. Compatible with AlarmKit (iOS 26.1+), allowing alarms to sound even in Silent or Focus modes. Scheduling: Powerful repeat options including daily, weekly, monthly, yearly, and custom intervals (e.g., every 2 days). Supports pause periods. Sound: Use custom recordings or local music files (when the app is in the foreground). Management: Organize alarms with folders, label search, and easy duplication. Sort by time or firing order. Advanced Features: Checklist, Snooze, Auto-stop (by duration/repetition), Skip next, and one-tap global pause. New alarms can automatically inherit previous settings for faster setup. [Timer] Run multiple timers simultaneously ranging from 1 second to 10000 hours. Quick Start: Access presets and history for instant activation. Interface: Switch between list and full-screen views. Choose between 10-key or picker input with customizable units (1s/10s/1m/10m). Foreground Features: Displays estimated completion time and supports auto-stop for sounds. [Stopwatch] Records: Capture lap times with precision. Export: Send your recorded data as a text file via email. [Other Settings] System Integration: Audio mix mode (play alongside other music apps), and Auto-lock. Display: Brightness adjustment with "Darkness Correction" and customizable UI elements (toggle between switches or checkboxes). Note on Music: Currently, this app does not support playback for Apple Music, iCloud-only songs, or purchased songs that have not been downloaded to the device storage. URL Scheme: net.hakoniwa.clock://

About

Lumo Calender

Features
Read full description

Lumo Calender は、予定をすばやく登録して、月単位で見やすく確認できるシンプルなカレンダーアプリです。 黒と青を基調にした落ち着いたデザインで、毎日の予定管理をすっきり行えます。 主な機能: ・月表示カレンダーで予定を一覧表示 ・タップや長押しで予定をかんたん追加 ・終日予定、時間指定予定に対応 ・開始日と終了日を分けて設定可能 ・誕生日や記念日に便利な毎年くり返し機能 ・予定ごとにメモを保存 ・土日や日本の祝日を見やすく表示 仕事の予定管理にも、プライベートの予定整理にも、毎日使いやすい使い心地を目指しました。 大切な予定を、Lumo Calender でやさしく管理しましょう。

Screenshots

Alarm & Timer4 screens
Lumo Calender4 screens

Verdict

The call

The clearest difference is in-app purchases: Lumo Calender at none against Alarm & Timer's 1. Lumo Calender also leads on ads (none vs shown). Alarm & Timer's advantage is update cadence (every 3 weeks vs every 5 months) and device support (3 vs 1). On price 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. Alarm & Timer sells 1 one-off in-app purchase. Lumo Calender asks for nothing beyond the download.

UpkeepUpdate frequency

Alarm & Timer ships an update every 3 weeks, Lumo Calender every 5 months. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
Alarm & Timer versus Lumo Calender: the parameters behind the verdict, then further details
ParameterAlarm & TimerLumo Calender
PriceFreeFree
Rating4.3 (2.3K ratings) — better—
Positive reviews58.4% of reviews—
Number of ratings2.3K — better—
Update frequencyEvery 3 weeks — betterEvery 5 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size41 MB6 MB
Age rating+44+
DeveloperKAZUTERU YOKOIHiroki Tani

Bugs and requests

Alarm & Timer

Reported bugs

3 issues
  • Alarm not sounding when phone is locked or in sleep mode
  • Inconsistent behavior when switching between apps
  • Notification issues when phone is in silent mode

Requested features

5 requests
  • Option to set alarms for weekdays only
  • Ability to choose from user's own audio files for alarms
  • Gradual volume increase for alarms
  • Alarm override for silent mode
  • One-time payment option to remove ads

Lumo Calender

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Alarm & Timer

One-time1
  • Remove Ads$9.99
None

Lumo Calender

No in-app purchases

Questions

Is Alarm & Timer free?
Alarm & Timer is free to download, with in-app purchases available.
Is Lumo Calender free?
Lumo Calender is free to download, with no in-app purchases.
Do Alarm & Timer or Lumo Calender have ads?
Alarm & Timer shows ads; Lumo Calender does not.
Which is updated more often, Alarm & Timer or Lumo Calender?
Alarm & Timer ships an update every 3 weeks, and Lumo Calender every 5 months. Most recently, Alarm & Timer was updated on November 6, 2026 and Lumo Calender on November 5, 2026.

Other comparisons