Comparison

iSlips vs OfficeCalendar Mobile

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

Head to head
About

iSlips

This app allows Timeslips users to quickly track time and expenses on their iPhone. It offers features like automatic time entry for calls, mileage tracking, and wireless data transfer to Timeslips.

Highlights
  • Time Entry with Timers
  • Expense Entry
  • Mileage Calculator
  • Automatic Time Entry for Calls
  • Wireless Data Transfer to Timeslips
  • Client Mapping (GPS)
Features
Read full description

Are you a Timeslips user who needs a fast and simple way to track your time and expenses on your iPhone? Then iSlips® is the solution for you. iSlips is a stand-alone iPhone application that allows you to take your key Timeslips data with you while on the go. iSlips is the fastest solution for tracking time and expenses because it takes advantage of the iPhone’s “always on” capability. No need to startup a slow computer to track that 15 minute call with a client. iSlips can automatically start tracking time on a call made through the built in client dialing. Never forget to bill a client for a phone call again. Do you charge clients for mileage? iSlips with its exclusive Mileage Calculator makes it fast and easy to capture mileage on your iPhone. Calculating the mileage from your office to a client’s place of business is just 2 clicks. iSlips Features: - Time Entry (with timers) - Expense Entry - Mileage Calculator - Client Dialing with Automatic Time Entry Creation - Client Emailing with Automatic Time Entry Creation - Client Mapping (GPS) - Wireless Data Transfer with Timeslips - USB and Email Data Transfer with Timeslips - Rounding Time by Seconds and Minutes - Recent 10 list for Clients, Activities, and References - Abbreviations - Start/Stop Time Calculator - Reports (Hours Per Day, Dollars Per Day, and Slip Totals) - Automatic backups Timeslips is a great time & billing product. Purchase iSlips to extend the reach of Timeslips to your iPhone and make every second count. REQUIREMENTS: - A wireless (WiFi) network connection to perform a wireless data syncs - iOS 5.0 or higher - Timeslips or TSRemote, v10.5 or higher - In order to sync with iSlips you must install iSlips Sync on the same computer as Timeslips Please visit us at www.brainfreezesoftware.com for additional product information, requirements, videos, and to download iSlips Sync.

About

OfficeCalendar Mobile

This app synchronizes your calendar and contacts wirelessly between your mobile devices and your desktop Outlook or OfficeCalendar Online. It allows you to view and edit shared calendars, ensuring your schedule is always up-to-date and accessible on the go.

Highlights
  • Bi-directional wireless syncing
  • Outlook and OfficeCalendar Online integration
  • View and edit shared calendars
  • Add new appointments and contacts
  • No cables required
  • Real-time schedule updates
Read full description

OfficeCalendar Mobile transforms your iPhone, iPod Touch, and iPad into a mobile office productivity tool by providing bi-directional wireless syncing between your Outlook, and OfficeCalendar Online, Calendar and Contact folders. Add new appointments to your calendar, or new contacts to your Contacts folder, and have them sync wirelessly from your iPhone to OfficeCalendar Online and Outlook on your desktop and vice versa. With OfficeCalendar Mobile, your iOS devices are also able to view and edit all the OfficeCalendar shared calendars you have access to, so now you can see your colleagues' calendars while out of the office. Important: Only existing OfficeCalendar users and trial users who have implemented OfficeCalendar Online and OfficeCalendar Mobile Server can utilize this app. Benefits: * Wirelessly sync calendar and contact entries from all your devices to Outlook and OfficeCalendar Online. No more cables. * No more worry about syncing your iPhone before leaving the office. Your data is already there, syncing with your mobile device. * Stop double-booking appointments. Your assistant can now see and edit your schedule in Outlook, OfficeCalendar Online and on their Apple device (must be running iOS5.1 or higher). * Know what your colleagues' schedules are while on-the-go and out of the office. iOS device users have access to all OfficeCalendar shared calendars. Requirements: * Compatible with iPhone, iPod Touch, iPad. Support from iOS 5.1 and higher * OfficeCalendar Mobile Server V1.0

Screenshots

iSlips4 screens
OfficeCalendar Mobile1 screens

Verdict

The call

The clearest difference is review sentiment: iSlips at 86% against OfficeCalendar Mobile's 18%. iSlips also leads on rating (4.9 vs 2.9). OfficeCalendar Mobile's advantage is price (Free vs $64.99) and update cadence (every 3 months vs every 7 months). On ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

OfficeCalendar Mobile is free to download; iSlips costs $64.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

iSlips holds the better App Store score, 4.9 against 2.9. Both are backed by a comparable volume of ratings — 14 and 20 respectively. Written reviews point the same way: 86% of iSlips's written reviews are positive against 18% of OfficeCalendar Mobile's.

UpkeepUpdate frequency

iSlips ships an update every 7 months, OfficeCalendar Mobile every 3 months. The most recent releases landed on September 18, 2026 and June 1, 2026 respectively.

Scorecard6 real differences · 4 level
iSlips versus OfficeCalendar Mobile: the parameters behind the verdict, then further details
ParameteriSlipsOfficeCalendar Mobile
Price$64.99Free — better
Rating4.9 (14 ratings) — better2.9 (20 ratings)
Positive reviews85.7% of reviews — better18.2% of reviews
Number of ratings1420 — better
Update frequencyEvery 7 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.09.0 — better
Further details — not scored
Size11 MB2 MB
Age rating4+4+
DeveloperBrain Freeze SoftwareLookout Software LLC

Customer experience

iSlips

All ratings14 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews28 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

OfficeCalendar Mobile

All ratings20 ratings
Positive45.0%
Neutral5.0%
Negative50.0%
Written reviews22 reviews
Positive18.2%
Neutral9.1%
Negative72.7%

In-app purchases

None

iSlips

No in-app purchases

None

OfficeCalendar Mobile

No in-app purchases

Questions

Is iSlips free?
iSlips costs $64.99, with no in-app purchases.
Is OfficeCalendar Mobile free?
OfficeCalendar Mobile is free to download, with no in-app purchases.
Which has better reviews, iSlips or OfficeCalendar Mobile?
iSlips is rated higher. iSlips averages 4.9 out of 5 from 14 ratings, while OfficeCalendar Mobile averages 2.9 from 20 ratings.
Do iSlips or OfficeCalendar Mobile have ads?
Neither iSlips nor OfficeCalendar Mobile shows ads.
Which is updated more often, iSlips or OfficeCalendar Mobile?
iSlips ships an update every 7 months, and OfficeCalendar Mobile every 3 months. Most recently, iSlips was updated on September 18, 2026 and OfficeCalendar Mobile on June 1, 2026.

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