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.
Time Calculator + − × ÷
Easily perform mathematical operations with hours and dates. This utility helps you quickly get accurate results for time-based calculations.
- Hour and date calculations
- Mathematical operations
- Quick results
- Assists with time-based math
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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.
SJ To do Manager
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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
Verdict
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
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.
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.
| Parameter | Time Calculator + − × ÷ | SJ To do Manager |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (25 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 25 — better | — |
| Update frequency | Every 4 weeks | Every 6 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 83 MB | 4 MB |
| Age rating | +4 | 4+ |
| Developer | NR Mobile App Solutions | Stephane JAILLIARD |
In-app purchases
Time Calculator + − × ÷
- Annual plan$1.99
- 6-month plan$1.99
SJ To do Manager
- A coffee$0.99
- A cookie$2.99
- No ads$4.99
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- A lemon tart$4.99
- A pizza$9.99
Questions
Is Time Calculator + − × ÷ free?
Is SJ To do Manager free?
Do Time Calculator + − × ÷ or SJ To do Manager have ads?
Which is updated more often, Time Calculator + − × ÷ or SJ To do Manager?
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