Comparison

Time Calculator + − × ÷ vs SJ To do Manager

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

Head to head
About

Time Calculator + − × ÷

Easily perform mathematical operations with hours and dates. This utility helps you quickly get accurate results for time-based calculations.

Highlights
  • Hour and date calculations
  • Mathematical operations
  • Quick results
  • Assists with time-based math
Features
Read full description

Do you know that moment when you need to do mathematical operations with hours and dates and it is a little difficult to know the result quickly? The idea of this app is to assist in these calculations.

About

SJ To do Manager

Features
Read full description

SJ To do Manager is a free application designed for independent professionals, artisans, freelancers, and small business owners seeking a simple and effective tool to manage client requests on a daily basis. Lightweight, intuitive, and optimized for mobile use, this app enables the centralization of essential information and task tracking from a smartphone, wherever you are. The application includes comprehensive client management with the ability to create detailed profiles. Each profile can contain name, company, email address, phone number, postal address, and personalized notes. This organization allows quick access to important data without relying on complex software. Sj To do Manager also lets you create tasks linked to a client. Each task includes a title, description, notes field, and can be prioritized using a system from P4 (low priority) to P1 (high priority). Three statuses are available to track progress: in progress, pending, or closed. This structure provides clear visibility into pending work and enables better planning. The main screen automatically sorts tasks by status and priority. In-progress tasks are shown first, followed by pending and then closed tasks. Within each status, priorities are considered: P1 tasks are listed above P2, P3, and P4. This intelligent ordering helps maintain focus and ensures nothing is overlooked. With its clean and functional interface, SJ To do Manager adapts easily to all types of professional activities. Whether managing services, client requests, or simply organizing everyday entrepreneurial tasks, this application is reliable and quick to use. Entirely free, SJ To do Manager offers a simple and portable solution to efficiently manage professional tasks and improve productivity directly from a smartphone.

Screenshots

Time Calculator + − × ÷4 screens
SJ To do Manager4 screens

Verdict

The call

The clearest difference is update cadence: SJ To do Manager at every 6 days against Time Calculator + − × ÷'s every 4 weeks. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Time Calculator + − × ÷ sells 2 one-off in-app purchases and SJ To do Manager sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Time Calculator + − × ÷ ships an update every 4 weeks, SJ To do Manager every 6 days. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

Scorecard1 real difference · 9 level
Time Calculator + − × ÷ versus SJ To do Manager: the parameters behind the verdict, then further details
ParameterTime Calculator + − × ÷SJ To do Manager
PriceFreeFree
Rating4.5 (25 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings25 — better—
Update frequencyEvery 4 weeksEvery 6 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size83 MB4 MB
Age rating+44+
DeveloperNR Mobile App SolutionsStephane JAILLIARD

In-app purchases

2 purchases

Time Calculator + − × ÷

One-time2
  • Annual plan$1.99
  • 6-month plan$1.99
5 purchases

SJ To do Manager

One-time5
  • A coffee$0.99
  • A cookie$2.99
  • No ads$4.99
Show 2 more
  • A lemon tart$4.99
  • A pizza$9.99

Questions

Is Time Calculator + − × ÷ free?
Time Calculator + − × ÷ is free to download, with in-app purchases available.
Is SJ To do Manager free?
SJ To do Manager is free to download, with in-app purchases available.
Do Time Calculator + − × ÷ or SJ To do Manager have ads?
Both Time Calculator + − × ÷ and SJ To do Manager show ads.
Which is updated more often, Time Calculator + − × ÷ or SJ To do Manager?
Time Calculator + − × ÷ ships an update every 4 weeks, and SJ To do Manager every 6 days. Most recently, Time Calculator + − × ÷ was updated on November 3, 2026 and SJ To do Manager on November 8, 2026.

Other comparisons