Prazo vs KeyAlarm
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prazo
This app consolidates your calendar, to-dos, appointments, and lists into a single, organized workspace. It offers flexible views, detailed entry options, and smart features for planning and managing daily tasks. Seamlessly integrate with other apps and devices for a unified planning experience.
- Unified calendar and to-do management
- Interactive timeline scheduling
- Detailed entry customization
- Smart shopping list features
- Route planning for multi-step activities
- Cross-app content capture via Share Extension
- Device synchronization via iCloud
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Your calendar shows when you're busy. Your to-do list shows what still needs doing. Prazo puts both in the same view, so you can plan your day without jumping between apps. From the appointment itself to the things you need to prepare, keep your schedule, tasks and everyday lists together. YOUR DAY AT A GLANCE Switch between month, week and day views, and adjust the space given to your calendar and ToDos. Connect Apple calendars and import items from Apple Reminders as ToDos. Organize tasks with categories, priorities, hashtags and notes, and set your own repeat intervals. Use Work and Personal Focus filters to choose which categories and linked calendars appear in your planner. PLAN THE WHOLE APPOINTMENT Add a starting address and destination, calculate travel time and see your estimated departure time. Try schedule changes in Plan Preview before saving: compare the timeline before and after, check overlaps and find unscheduled time slots. Link preparation and follow-up ToDos to an appointment, and keep reusable step-by-step plans for things you do regularly. Compare your local time with another time zone and see existing appointments when choosing start and end times. CAPTURE IT WHILE IT'S ON YOUR MIND Share content to Prazo or drag in text, links, photos and files from other apps. Scan documents, attach them as PDFs and add recognized text to a title or note. Text recognition runs on your device. Create shopping lists with quantities, sections and a shopping mode. Enable optional habit tracking for daily goals, progress and history. Find entries, hashtags and attached files with global search. PART OF YOUR APPLE SETUP Capture ToDos with Siri. Use Shortcuts to find, edit, complete or reopen existing entries. Keep plans within reach on Apple Watch and with Home Screen and Lock Screen widgets. Follow appointment and departure countdowns with Live Activities. Use the Next Appointment widget and supported Live Activities in CarPlay. Choose time- or location-based reminders, or use an alarm for a timed ToDo reminder. Make Prazo yours with light or dark mode, category and hashtag colors, and a choice of app icons. Enable iCloud to sync your planning across devices, share selected entries with other people and use the privacy lock to protect access to the app. Start with today's plans. Add the rest when you need it. Alarms, interactive Siri and Shortcuts results, and CarPlay widgets and Live Activities require iOS 26 or later. Availability also depends on your device, vehicle and system settings.
KeyAlarm
Never miss important events with this app that triggers real alarms based on keywords in your calendar entries. Set multiple alarms for a single event and manage all upcoming alerts easily. Your data remains private as it operates without servers.
- Keyword-based alarm triggering
- Real alarms that ring on silent/focus
- Multiple alarms per rule
- Full calendar alarm setting
- Scheduled alarm overview
- Offline operation, no servers
- One-time purchase after trial
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"Wait — that was today?" By the time you realise, it's over. The online lesson. The dentist. Your kid's school visit. The form that had to be in by Friday. It was in your calendar the whole time. The notification came and went while your phone was face down on the table. KeyAlarm is for the appointments you cannot miss. ■ Add the keyword once. That's it. Type "lesson" and set it for 30 minutes before. From then on, every event with "lesson" in the title gets a real alarm — this week, next month, forever. You never set another one by hand. Three kids and a different activity every day? One rule covers all of them. ■ A real alarm, not a notification KeyAlarm uses the same system alarms as the built-in Clock app. It rings on silent. It rings in Focus. It keeps ringing until you reach over and stop it. That is the whole point — a notification you can sleep through is not a reminder. ■ One to get ready. One to leave. A single keyword can ring more than once. Thirty minutes before to start getting ready, five minutes before to actually walk out the door. Two alarms, one rule. ■ Or take a whole calendar Have a calendar just for your kid's activities? Skip keywords entirely and set an alarm for every event in it, whatever it says. ■ See that it's set Open the Scheduled tab and every upcoming alarm is right there with its time. No wondering whether it worked. Don't need one of them? Swipe it away, or tap the × on the Lock Screen countdown. ■ Your calendar stays yours KeyAlarm has no servers. Your events are read on your iPhone and never leave it. No account, no sign-in, nothing to opt out of. ■ Free for 30 days, then a one-time purchase No subscription. Pay once, keep it. And if the trial runs out, alarms you already set keep ringing — only new ones stop being added. An app like this should never go quiet because of billing. Requires iOS 26 or later. Works with any calendar your iPhone syncs, including Google, Outlook, and iCloud. Website and user guide: https://ltng.jp/apps/keyalarm/en
Screenshots
Verdict
The clearest difference is in-app purchases: Prazo at none against KeyAlarm's 1. Prazo also leads on iOS requirement (18.6 vs 26.0). KeyAlarm's advantage is ratings volume (4 vs 1). On price, rating, review sentiment and update cadence 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
Both are free to download. KeyAlarm sells 1 one-off in-app purchase. Prazo asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Prazo against 5.0 for KeyAlarm. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Prazo ships an update every 4 days, KeyAlarm every 2 days. Both last shipped on October 31, 2026.
| Parameter | Prazo | KeyAlarm |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (4 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 4 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 18.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 34 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Markus Elias | Lightning LLC. |
Customer experience
Prazo
KeyAlarm
In-app purchases
Prazo
No in-app purchases
KeyAlarm
- 継続利用$2.99









