Anchor Pro vs CalendarPunch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Anchor Pro
This app helps boaters set and monitor their anchor position in real-time. It allows for defining safe zones, tracking boat movement, and receiving alerts for critical changes. Remote notifications and Apple Watch integration enhance its utility for secure anchoring.
- Set anchor location in real-time or manually
- Define custom safe swing zones
- Monitor boat movement and track history
- Receive real-time alerts for position, GPS, and battery
- Remote notifications via Telegram or email
- Apple Watch companion app for key metrics
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SET THE ANCHOR Set your anchor location in real time as you drop it, or specify it later by entering distance and bearing. Advanced users can also input exact coordinates. DEFINE THE SAFE ZONE Define the allowed swing area as a simple circle around the anchor, or create a more precise zone by setting two different radii at specific angles. MONITOR MOVEMENT Stay on top of every movement with comprehensive real-time data. Review key metrics on the main screen or switch to the map view to see your boat's track — ideal for analyzing whether your anchor is holding or dragging. GET ALERTED WHEN IT MATTERS Monitor position, GPS signal strength, and battery level — and receive alerts the moment any of these fall outside your set thresholds. REMOTE ALERTS Leave your phone on board and stay informed from shore. Receive alarm notifications via Telegram or email. With Telegram, you can also request a live status update at any time. APPLE WATCH Keep distance, bearing, and battery level on your wrist with the Apple Watch companion app — all updated in real time. TRY ANCHOR PRO FOR FREE Core features are always free. Want to explore everything? All premium features are available during a free trial period — no commitment required. Anchor Pro is ad-supported. Purchasing an Anchor Premium subscription removes ads and unlocks extra features. Payment is charged to your iTunes Account at confirmation. Subscriptions renew automatically at the same price unless auto-renewal is turned off at least 24 hours before the current period ends. You can manage auto-renewal anytime in your Account Settings. Anchor Premium is $6.99 USD/year (pricing may vary by country). Any unused portion of a free trial is forfeited upon purchasing a subscription, where applicable. Terms of use: https://links.ideaboys.net/anchor-ios-terms.html GOOD TO KNOW Anchor Pro uses background audio and location services to keep alerts active when the app is not in the foreground. Please note that continuous GPS use will drain your battery faster than usual.
CalendarPunch
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CalendarPunch turns the events already on your iPhone into prominent alarms, so the moments that matter are harder to miss. Choose exactly which events need an alarm. Add several lead times, set an alarm for the event start, or mirror supported alert times already saved in Calendar. CalendarPunch keeps Calendar as the source of truth and shows why each alarm will ring. Create reusable custom alarm times from 1 minute to 24 hours before an event. With CalendarPunch Pro, you can: • automatically add alarms with keyword or regular expression filters for event titles, locations, or notes • preview matching events and choose enabled calendars for each filter • reuse one alarm rule across a recurring event • choose which calendars are active • choose default alarm times for newly armed events • pause all alarms when you need a break CalendarPunch Pro is a one-time lifetime purchase—no subscription. Access to Calendar and Alarms is required for the app’s core features. CalendarPunch does not translate or rewrite your event titles or calendar names.
Screenshots
Verdict
The clearest difference is update cadence: CalendarPunch at every 4 weeks against Anchor Pro's every 2 months. Anchor Pro's advantage is iOS requirement (17.2 vs 26.0). On price, ads, in-app purchases and device support 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. Anchor Pro sells 1 in-app purchase, starting at $6.99 per year and CalendarPunch sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Anchor Pro ships an update every 2 months, CalendarPunch every 4 weeks. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.
| Parameter | Anchor Pro | CalendarPunch |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (3.5K ratings) — better | — |
| Positive reviews | 78.9% of reviews | — |
| Number of ratings | 3.5K — better | — |
| Update frequency | Every 2 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 17.2 — better | 26.0 |
| Further details — not scored | ||
| Size | 23 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | IdeaBoys GmbH | Ian MacFarlane |
Bugs and requests
Anchor Pro
Reported bugs
2 issues- App randomly shuts off
- Anchor position tracking glitches
Requested features
3 requests- Customizable anchor icon/color
- Integration with marine GPS/chartplotter
- Ability to adjust alarm parameters remotely
CalendarPunch
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Anchor Pro
- Anchor Premium7 Days trial$6.991 Year
CalendarPunch
- CalendarPunch Pro$9.99









