Cal Printer vs Kernel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cal Printer
Easily print your iPhone or iPad calendar and reminders. Select from Day, Week, Month, or List views and share your schedule as a PDF. Perfect for those who need a physical copy of their events.
- Print calendar and reminders
- Share as PDF
- Day, Week, Month, List views
- Select date range and calendars
- Optional mini-calendar/keys
- Universal app support
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Print your iPhone or iPad calendar quickly and easily with Cal Printer. Create clear Day, Week, Month or List views, then print them directly using AirPrint or save and share them as PDFs. Cal Printer works with the calendars and reminders already on your device — there's no new calendar to set up and no account required. Perfect for printing family calendars, work schedules, appointments, monthly planners, weekly schedules and reminders. PRINT YOUR APPLE CALENDAR Need to print your calendar from your iPhone or iPad? Cal Printer makes it simple. Choose the calendars you want to include, select a date range and print a clear paper copy in Day, Week, Month or List format. If you use Google Calendar, Exchange or other calendar accounts with the Calendar app on your device, those calendars can also be selected and printed. PRINT YOUR REMINDERS Cal Printer isn't just for calendars. Print your Apple Reminders and to-do lists too, giving you a convenient paper copy of your tasks. PERFECT FOR FAMILY CALENDARS Keep everyone organised with a printed family calendar. Print a weekly or monthly calendar for the fridge, kitchen or wall so everyone can see what's coming up at a glance. GREAT FOR WORK, DIARIES & APPOINTMENTS Need a physical copy of your work schedule, diary or appointments? Select the dates you need and create a clear printed record of your calendar events. SAVE OR SHARE AS PDF Don't have a printer nearby? Export your calendar or reminders as a PDF to save, email, share or print later. USE THE CALENDARS YOU ALREADY HAVE There's nothing new to set up. Cal Printer uses the calendars already available on your iPhone or iPad, so you don't need to copy your events into another calendar app. SIMPLE CALENDAR PRINTING • Day, Week, Month and List views • Print calendars directly from your iPhone or iPad • Print Reminders and to-do lists • Choose which calendars to include • Select the date range you want to print • Print monthly and weekly schedules • Print family calendars and work schedules • Save and share as PDF • Print using AirPrint • No new calendar or account to set up Whether you want to print an Apple Calendar from your iPhone, put a monthly family calendar on the fridge, print your weekly work schedule, keep a paper copy of upcoming appointments or print your Reminders, Cal Printer makes it quick and easy.
Kernel
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Everyone counts. Kernel measures. Kernel is the first corn yield app to measure kernel size — not just count kernels. Two photos, on your phone, no signal needed. Free. HOW AN ESTIMATE WORKS 1. COUNT THE KERNELS — Photograph the whole ear. Kernel traces every row: kernels per row, rows per ear. 2. MEASURE THE SIZE — Snap the ear in half and photograph the cut face. Kernels per bushel is measured, not assumed. 3. ESTIMATE YIELD — Bushels per acre at 15.5% moisture, on the spot. The flow is faster than the hand count it replaces. IT WORKS AT THE FIELD EDGE Everything runs on the phone. Three bundled neural-network models ride along in the app, photos and estimates are stored on the device, and the whole flow works with no signal at all. EVERY NUMBER IS EDITABLE Kernel shows its work. Every measurement — kernels per row, rows, kernel depth, kernels per bushel — can be corrected by hand, and the edits stick. An estimate holds as many ears as you want to sample, reported as the average of the per-ear yields. EVERY EAR ON THE MAP Estimates auto-save, are named by GPS location, and are pinned on a map — searchable by field, hybrid, date, notes or location. Export selected estimates to CSV. Deleted estimates are restorable for 30 days. FREE, WITH OPTIONAL BACKUP No subscription. No account needed to estimate. Sign in with Google, Apple, or email only if you want your estimates backed up and restored to a new phone. Not tied to any seed brand. Built by Mark Gee of Gee LLC, who has worked in agriculture his whole life: "So much of the yield story is told by kernel size, and we're the first app to help farmers measure that." An estimate is a sample, not a measurement of your harvest.
Screenshots
Verdict
The clearest difference is in-app purchases: Kernel at none against Cal Printer's 1. Kernel also leads on iOS requirement (15.1 vs 17.0). Cal Printer's advantage is ads (none vs shown). On price 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. Cal Printer sells 1 one-off in-app purchase. Kernel asks for nothing beyond the download.
| Parameter | Cal Printer | Kernel |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (833 ratings) — better | — |
| Positive reviews | 92.1% of reviews | — |
| Number of ratings | 833 — better | — |
| Update frequency | Every 3 weeks | — |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 4 MB | 130 MB |
| Age rating | 4+ | 4+ |
| Developer | Richard McKenna | Gee LLC |
Bugs and requests
Cal Printer
Reported bugs
3 issues- Crashes on iOS 16 update
- Crashes when trying to open week view
- Printing issues (e.g. blank output, missing details)
Requested features
4 requests- Add support for Outlook calendar
- Allow editing of calendar entries
- Option to print multiple months per page
- Integrate with other productivity apps
Kernel
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Cal Printer
- Permanently Unlock all Calendars$6.99
Kernel
No in-app purchases
Questions
Is Cal Printer free?
Is Kernel free?
Do Cal Printer or Kernel have ads?
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