How Long Left vs Calendar Timeline
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
How Long Left
This app helps you visualize the time remaining for your calendar events. It offers a Today Widget, Siri integration, and an Apple Watch app for convenient access. Receive notifications for upcoming events and customize your watch face with countdown complications.
- Countdown calendar events
- Today Widget integration
- Siri integration
- Apple Watch app
- Time remaining notifications
- Apple Watch complications
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How Long Left is a simple app that helps you manage your time by displaying the time remaining of current calendar events. It also includes a Today Widget, Siri integration, and an Apple Watch app, time remaining notifications, and more. There is also an Apple Watch complication that, with an in-app purchase, can display a countdown for current and upcoming events.
Calendar Timeline
Get a clear overview of your next seven days of calendar entries and reminders. Customize your watch face with various timeline styles, text display options, and tint colors for a personalized experience.
- Seven-day calendar entry overview
- Today and earlier reminder support
- Multiple timeline styles (fixed, dynamic, moving)
- Customizable text display
- Favorite tint color selection
- Watch face complications
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With the Calendar Timeline App for watchOS you'll get a nice overview of the calendar entries within the next seven days – also reminder for today and earlier are supported in one single app. The app comes with a set of complications – also with a nice big complication for Modular Duo and Infograph Modular watch faces. In this complication you'll see all events and reminder of the day and got the next one display above. HUGE Update: Now you can choose your favorite style! · Fixed timeline: Fixed timespan from 6 am to 12 am · Dynamic timeline: The timeline shows the timespan from first to last event of the day with 1 hour padding each side · Dynamic timeline with actual time: Like dynamic but with the actual time marker (if before first or past last event) · Moving timeline: You will see a 4 hour timespan for the future and the timeline is moving through the day (only style where the next day do not get shown when after 6 pm and past the last event) · Also you can choose if you like the full big image on your watch face or like the next event text and actual date on top of the timeline. · You can switch on text in timeline which (mostly) fully displays your event text. · Even add you favorite tint color. With these settings you can configure your own style on your own watch face! ** IMPORTANT NOTE ** The big graph complication / widget only runs with Apple Watch Series 4 and higher (high detail watch faces like Modular Duo, Infograph Modular or Infograph Compact watch faces). MDM (company) managed devices may do not provide calendar data even when granted access since watchOS only apps cannot read MDM profiles. Since watchOS 10 the Complication maybe need some time to refresh to new settings due to Apples refresh policy. ** CANNOT RE-DOWNLOAD THE APP? ** For watchOS only apps you need to open AppStore on your watch itself and search for calendar timeline to re-download the app. Sorry for that, but that's Apples flow for watchOS only apps.
Screenshots
Verdict
The clearest difference is price: How Long Left at Free against Calendar Timeline's $1.99. How Long Left also leads on iOS requirement (12.0 vs 15.6). Calendar Timeline's advantage is in-app purchases (none vs 4) and update cadence (fortnightly vs every 4 months). On rating, review sentiment, ratings volume and ads 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
How Long Left is free to download; Calendar Timeline costs $1.99 up front. How Long Left sells 4 one-off in-app purchases. Calendar Timeline asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 3.8 for How Long Left against 3.7 for Calendar Timeline. Both are backed by a comparable volume of ratings — 39 and 61 respectively. Written reviews are what separate them: 59% of How Long Left's written reviews are positive against 62% of Calendar Timeline's.
How Long Left ships an update every 4 months, Calendar Timeline fortnightly. The most recent releases landed on July 13, 2026 and September 25, 2026 respectively.
| Parameter | How Long Left | Calendar Timeline |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 3.8 (39 ratings) — better | 3.7 (61 ratings) |
| Positive reviews | 58.5% of reviews | 61.8% of reviews — better |
| Number of ratings | 39 | 61 — better |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPod, Apple Watch |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 27 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryan Kontos | Kevin Lieser |
Customer experience
How Long Left
Calendar Timeline
In-app purchases
How Long Left
- How Long Left Widget$1.99
- Premium Watch Complication$4.99
- Legacy Pro Lifetime$39.99
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- How Long Left Pro (Lifetime)$49.99
Calendar Timeline
No in-app purchases








