Productivity Challenge Timer vs Inextrust Core
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Productivity Challenge Timer
This app gamifies productivity by challenging users to work harder and track their habits. Earn ranks, unlock achievements, and monitor your work patterns over time to identify peak productivity periods. It focuses on intense work sessions and detailed time tracking for projects.
- Gamified productivity challenges
- Rank and achievement system
- Detailed work habit tracking
- Project-specific time logging
- Focus on uninterrupted work sessions
- Productivity analytics by day/hour
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Productivity Challenge Timer aims to help you be more productive, more focused, waste less time and so on, you already know all that stuff. What this app is really about is challenging you to work harder and tracking your work habits. You'll earn/lose ranks depending on your performance, earn achievements and track your productivity over time, so you'll know how long you worked on what and during which days of the week and hours of the day you're at your most productive. Now here's a few things you should know before downloading: - This is not an organizer. If you can't keep track of what you're supposed to be doing, this is not the app for you. The app includes tracking of projects so you know how much time you spent working on each of your clients/books/websites/whatever - like a time sheet, but it's not meant to be an organizer or a to-do list. - This app will not let you pause work sessions or finish them early, so if you have a tiny baby-sized bladder and you need to pause every few minutes, this is not the app for you. The shortest work session you can set is 10 minutes and you're not supposed to be interrupted. Besides, I use this app too, and I'd be the first to abuse that pause feature to go look up useless nonsense instead of getting work done. - The purpose of this app is not to promote a healthy work-life balance, but to get you to work harder. Because of this, it does not recognize weekends or holidays or parenting or any other excuse people come up with to take time off, and it will demote you if you start slipping. Please don't expect the app to validate your personal goals, its sole purpose is to make you work harder, even when you shouldn't. That's it, thanks for reading and I hope you find this app as useful as I do.
Inextrust Core
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INEXTRUST is a discreet security solution. It does not require any additional printed element or chemicals to be added to your packaging. A state-of-the-art security feature which can be integrated on all printed packaging materials in a wide range of industries. - Invisible - Integrated into existing packaging - No additional printing costs - Authentication with a smartphone offline 1 ) INVISIBLE INEXTRUST is a discreet security solution. It does not require any additional printed element or chemicals to be added to your packaging. 2) INTEGRATED INTO EXISTING PACKAGING Directly combined with your existing graphic elements such as logos, texts, data carrier’s, etc., INEXTRUST is integrated seamlessly within your current design. Re-certification or additional regulatory compliance approval are not require for its packaging. 3) AUTHENTICATION WITH A SMARTPHONE By using your own Smartphone, you can verify the authenticity of your products with the INEXTRUST application. It can be used offline and does not require the need for any additional scanning devices. 4) APPLIED WITH STANDARD PRINTING TECHNOLOGY INEXTRUST can be printed with traditional printing processes such as offset, digital printing, flexography and rotogravure. Laser engraving on metal or other materials is also possible.
Screenshots
Verdict
The clearest difference is in-app purchases: Inextrust Core at none against Productivity Challenge Timer's 1. Inextrust Core also leads on iOS requirement (13.0 vs 15.6). On price, update cadence, ads 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. Productivity Challenge Timer sells 1 one-off in-app purchase. Inextrust Core asks for nothing beyond the download.
Productivity Challenge Timer ships an update every 3 months, Inextrust Core every 2 months. The most recent releases landed on September 18, 2026 and June 1, 2026 respectively.
| Parameter | Productivity Challenge Timer | Inextrust Core |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (210 ratings) — better | — |
| Positive reviews | 95.1% of reviews | — |
| Number of ratings | 210 — better | — |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 78 MB |
| Age rating | 9+ | 4+ |
| Developer | Vladimir Jovanovic | INEXTO SA |
Bugs and requests
Productivity Challenge Timer
Reported bugs
3 issues- Occasional sound issues
- Slow loading of historical data
- Inconsistencies between iOS and Android versions
Requested features
5 requests- Apple Watch support
- Customizable timer durations
- Ability to add notes to sessions
- Weekend/holiday mode to avoid demotions
- More advanced goal-tracking and analytics
Inextrust Core
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Productivity Challenge Timer
- Pro mode$8.99
Inextrust Core
No in-app purchases
Questions
Is Productivity Challenge Timer free?
Is Inextrust Core free?
Do Productivity Challenge Timer or Inextrust Core have ads?
Which is updated more often, Productivity Challenge Timer or Inextrust Core?
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