Comparison

CalReader vs Mailbutler mobile

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

Head to head
About

CalReader

Enhance your calendar's readability with customizable fonts and sizes. Easily filter events by date, calendar, or search terms, and export your data and time calculations in various formats like TEXT, CSV, or TSV. This tool is ideal for logging work or personal events and generating invoices.

Highlights
  • Customizable font and size
  • Event filtering by date, calendar, and text
  • TEXT, CSV, TSV export
  • Time calculation for billing
  • Siri Shortcuts integration
  • Dark Mode support
Features
Read full description

CalReader provides calendar readability, TEXT/CSV/TSV export, and time calculations. Choose a favorite font and size for maximum readability. Filter event listings by date range, calendar, and search text, and export listings and time calculations at TEXT, CSV, or TSV files. CalReader features time analysis and can calculate an invoice billing amount and time log for a given filter setup, total hours and rate per hour. Use Siri Shortcuts and Home Screen Quick Actions to quickly perform common actions in CalReader. CalReader can be used to log events on work/home projects. CalReader integrates iOS, macOS and CalDAV calendars including macOS Server, Google and Yahoo calendars, and provides a unique tool for journals, diaries and event logs. CalReader's unique flexibility makes for easy browsing/reading of one's history or future. The events listing view optionally displays ALL of the text of an event in an easy to read format. Calendar Filtering • Choose a date range to filter the visible events and to calculate hours and produce time logs. • Easily choose a single calendar, multiple calendars or all calendars for viewing. • Search selected calendars for text, keywords or phrases. • The search function can be used to search for times or dates. For example, find all events in the date range that start at "9:00 AM", or events on the date "11/4/26". Export Listings and Calculations • The export text generated by the Copy Text With Calculations command includes a header with the current calendar names, date range and optional search text. • Copy the filtered calendar text, with or without calculations, and then paste the text to other types of applications, or tap E-Mail Text to deliver the calendar text via e-mail. • E-mail CSV (Comma-Separated Values) or TSV (Tab-Separated Values) event listing files as attachments. • The Calculations view displays the total hours for the filtered event set and calculates the total amount using rate per hour, useful for invoices / billing. Calculations also displays the event count, average, minimum and maximum duration for the current set of events. Display Customization • Dark Mode support, and app-based dark and light styles with various color effects and calendar color indications. • Customize the font and size of the calendar text for best readability: large text is easy on the eyes, or small text for high density information. • Use pinch touch gestures to instantly change the size of the text. • Choose from various view styles using calendar colors, or no colors. • Choose to view all text of each item, or limit the number of lines (1-5) for a quick overview. Usability • Week and Month select: Previous, This, Next buttons provide fast one-tap date range selections. Use Previous and Next buttons repeatedly to move the date range window through time. • Go To Today and Go To Date actions provide quick navigation. • Speak Events uses the device’s text-to-speech capabilities to speak the currently visible events. • The Filter settings, Actions, Display, Calculations and Extras sections are neatly accessible without scrolling and searching for functions. • Tap the Done button for direct return to the main CalReader view after performing functions or settings changes. • Event listings include the duration for each event. • Events close to the current time are highlighted in the listing view with a gradient of orange displayed along the right edge, most intense for events close to the current time, fading off for events within 24 hours before and after the current time. • The filter settings of CalReader help produce complete listings of events that match a date range, calendar set, and a text phrase, and readability all of the text in the filtered set of events. • Choose to see all of the event text for all displayed events in the list, or truncated text and more items per screen. • Update Notification sound indicates a calendar update.

About

Mailbutler mobile

Enhance your email productivity on the go with this app. Track email opens, manage contacts, and organize tasks and notes. Collaborate with your team by sharing essential information.

Highlights
  • Email Tracking
  • Contact Management
  • Task Management
  • Note Taking
  • Team Collaboration
  • Email Insights
Features
Read full description

This is Mailbutler, the companion app to our popular email extension which makes your inbox smarter. Mailbutler gives you everything you need to maximize your productivity and keep your email on point. It offers a multitude of useful, productivity-boosting features, and with our companion app, you can use our features on the go, never missing a trick. An extension of our desktop email app, it brings all of your tracking and insights features to your mobile, meaning you can send emails on your desktop and follow their progress on your phone. Features include: • Email Tracking: More information needed? Send tracked emails from your mobile phone and use the app to find out when, where, and how often your email or link was opened • Contacts: See all information about your contacts in the same place. Get essential insights into your contacts to maintain peak customer communication • Tasks: Always remember to take action. Attach to-do items to your contacts and emails. • Notes: Add notes to your emails and contacts so you never forget any information. • Collaborators: Be consistent. Share contacts, notes, tasks, signatures, templates and more across your whole team === Who is Mailbutler for? === • Freelancers, independent professionals, and marketers • Businesses, marketing teams, and sales teams which prioritise direct client communication • Teams which need clear, easy, and productive internal communication • Productivity-lovers who want to achieve more with emails and reach Inbox Zero! === Why Mailbutler? === • Focus on important projects and improve time management without distractions • Includes a wide range of useful features and our desktop version has affordable plans for every business’s needs • Mailbutler never accesses or reads your emails • Ensures your emails are the best they can possibly be • Helps you to improve your customer communication and build new prospects, clients and contacts === Testimonials === “Without a doubt, I recommend Mailbutler. It’s revolutionized my inbox.” Hollie Barac, Accountability and Productivity Partner “Mailbutler’s support feels personal and it’s what sets them apart from so many other companies.” Craig Bowman, President of Common Ground Consulting “With Email Tracking I can focus my energy on serving clients instead of chasing emails.” Charlene Brown, Owner of Bklyn Custom Designs “The ability to add notes and tasks directly in my email client is very helpful and I’ve never seen another program that offers this feature in such an integrated way.” Jeff Sanders, Productivity Coach === Why wait? Get Mailbutler right now === The Mailbutler mobile app is free, but you need to have the desktop version of Mailbutler to be able to use it. All new Mailbutler users get a 14-day free trial so they can try out all our features and decide which plan is the best for them, and we don’t require any credit cards details until you subscribe to a plan, so you can opt out at any time! Mailbutler Tracking Plan - Basic email and link tracking for people who just want to track their emails - €3,95 per month/€39,50 per year Mailbutler Professional Plan - For professionals who want to better organize their inbox – €7,95 per month/€79,50 per year Mailbutler Smart Plan - For heavy email users who need advanced inbox features - €12,95 per month/€129,50 per year Mailbutler Business Plan - The full package for teams that want the definitive email productivity extension – €29,95 per month/€299,50 per year Privacy Policy: https://www.mailbutler.io/privacy-policy/ Terms of Service: https://www.mailbutler.io/terms-and-conditions/ === Got questions? === Contact us anytime at support@mailbutler.io === Connect with us! === Facebook: https://www.facebook.com/mailbutler/ Twitter: https://twitter.com/mailbutler LinkedIn: https://www.linkedin.com/company/mailbutler-gmbh/

Screenshots

CalReader4 screens
Mailbutler mobile1 screens

Verdict

The call

The clearest difference is price: Mailbutler mobile at Free against CalReader's $6.99. Mailbutler mobile also leads on review sentiment (78% vs 33%) and update cadence (fortnightly vs every 4 months). CalReader's advantage is in-app purchases (none vs 6) and rating (4.3 vs 3.9). On ads, device support and iOS requirement 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

Mailbutler mobile is free to download; CalReader costs $6.99 up front. Mailbutler mobile sells 6 in-app purchases, starting at $8.49 per month. CalReader asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CalReader holds the better App Store score, 4.3 against 3.9. That said, the two scores are not equally well evidenced: Mailbutler mobile has 125 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 33% of CalReader's written reviews are positive against 78% of Mailbutler mobile's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

CalReader ships an update every 4 months, Mailbutler mobile fortnightly. The most recent releases landed on August 29, 2026 and September 24, 2026 respectively.

Scorecard7 real differences · 3 level
CalReader versus Mailbutler mobile: the parameters behind the verdict, then further details
ParameterCalReaderMailbutler mobile
Price$6.99Free — better
Rating4.3 (3 ratings) — better3.9 (125 ratings)
Positive reviews33.3% of reviews78.1% of reviews — better
Number of ratings3125 — better
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size16 MB18 MB
Age rating4+4+
DeveloperImajaMailbutler GmbH

Customer experience

CalReader

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Mailbutler mobile

All ratings125 ratings
Positive67.2%
Neutral12.0%
Negative20.8%
Written reviews251 reviews
Positive78.1%
Neutral6.4%
Negative15.5%

Bugs and requests

CalReader

Not enough reviews yet to summarise bugs or requests.

Mailbutler mobile

Reported bugs

4 issues
  • Constant login issues on iOS
  • Flashing/blinking screen on iOS
  • Doesn't work properly with Gmail on iOS
  • Doesn't work anymore on iOS or Mac

Requested features

6 requests
  • Split screen functionality on iPad
  • Ability to set reminders for incoming emails
  • Full integration with iOS Mail app
  • Ability to send tracked emails from iOS
  • More a-la-carte feature options
Show 1 more
  • Better iPad optimization

In-app purchases

None

CalReader

No in-app purchases

6 purchases

Mailbutler mobile

Subscriptions6
  • Professional (Monthly)$8.491 Month
  • Professional+ (Monthly)$14.991 Month
  • Business (Monthly)$31.991 Month
Show 3 more
  • Professional (Yearly)$86.991 Year
  • Professional+ (Yearly)$149.991 Year
  • Business (Yearly)$329.991 Year

Questions

Is CalReader free?
CalReader costs $6.99, with no in-app purchases.
Is Mailbutler mobile free?
Mailbutler mobile is free to download, with in-app purchases available.
Which has better reviews, CalReader or Mailbutler mobile?
CalReader is rated higher. CalReader averages 4.3 out of 5 from 3 ratings, while Mailbutler mobile averages 3.9 from 125 ratings.
Do CalReader or Mailbutler mobile have ads?
Neither CalReader nor Mailbutler mobile shows ads.
Which is updated more often, CalReader or Mailbutler mobile?
CalReader ships an update every 4 months, and Mailbutler mobile fortnightly. Most recently, CalReader was updated on August 29, 2026 and Mailbutler mobile on September 24, 2026.

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