Blackjack Tracker vs ScreenZen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Blackjack Tracker
This app assists with card counting in Blackjack, performing the mathematical calculations and tracking card values. It supports multiple popular counting systems and various deck configurations, offering bet recommendations based on the current count.
- Automated card counting
- True count calculation
- Supports Hi-Lo, KO, Hi-Opt I, Hi-Opt II systems
- Configurable for 2, 5, 6, or 8 decks
- Dynamic system switching
- Bet recommendations
- Card play history tracking
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Count cards like the MIT Blackjack team! This app does the math, observation and counting for you. It counts the number of cards played and adds or subtracts their count values. The “true count” is calculated according to the counting system and the number of aces played is saved. Supports the most popular counting systems: - Hi-Lo - KO - Hi-Opt I - Hi-Opt II Suitable for playing Blackjack with: - 2 decks - 5 decks - 6 decks - 8 decks The counting system can be changed at any point during counting and will show the current “count” and bet recommendations according to the system chosen. The play of cards can also be tracked using the history and is easy to edit if necessary. I originally developed this little program for my own private use, to count cards during blackjack. After I got some acquaintances enthusiastic about it, I decided to prepare the app for public release and put it online.
ScreenZen
This app offers multiple strategies to help you reduce screen time and control app usage. Features include delayed app opening, timed scrolling interruptions, and customizable app limits. It also provides options for strict blocking, settings protection, and encourages mindful breaks.
- Delayed app opening
- Scrolling interruption
- Set app goals and limits
- Configurable daily schedules
- Strict app blocking
- Screen time tracking for distracting apps
- Settings protection locks
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Multiple strategies to reduce your screentime 1. Delay before opening your app: A bit of time before choosing if you need to open your distracting app. You can have the wait time increase each time you open your app. 2. Interrupt your scrolling: Check your distracting apps for short periods of time so you don't get sucked in. 3. Set an app goal and optionally block when you reach your limit. 4. Configurable for different days of the week and time by app. 5. Messages like "Is this important" before opening your app. 6. See your screen time for only your distracting apps. Don't worry about Google Maps bloating up your time. 7. Strict block your apps: Either for time ranges, after a certain number of opens or ScreenTime. 8. Locks on Settings to prevent you from changing your settings when you want to open an app. 9. Breathing and other activities to encourage you not to need to open the app while waiting for it to unlock. 10. Streaks to encourage you not to exceed your limits or override your settings.
Screenshots
Verdict
The clearest difference is review sentiment: ScreenZen at 93% against Blackjack Tracker's 0%. ScreenZen also leads on rating (4.9 vs 3.4) and ratings volume (50K vs 11). Blackjack Tracker's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (6.1 vs 16.4). 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. Blackjack Tracker sells 3 one-off in-app purchases and ScreenZen sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
ScreenZen holds the better App Store score, 4.9 against 3.4. That said, the two scores are not equally well evidenced: ScreenZen has 50K ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 0% of Blackjack Tracker's written reviews are positive against 93% of ScreenZen's.
| Parameter | Blackjack Tracker | ScreenZen |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (11 ratings) | 4.9 (50K ratings) — better |
| Positive reviews | 0.0% of reviews | 93.4% of reviews — better |
| Number of ratings | 11 | 50K — better |
| Update frequency | — | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Best chart rank | — | #126 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 6.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 7 MB | 159 MB |
| Age rating | 4+ | 4+ |
| Developer | Asylum Square Interactive GmbH | ScreenZen LLC |
Customer experience
Blackjack Tracker
ScreenZen
Bugs and requests
Blackjack Tracker
Not enough reviews yet to summarise bugs or requests.
ScreenZen
Reported bugs
3 issues- Unlock button not working as expected
- App stops working after some time
- Compatibility issues with iOS 16 update
Requested features
4 requests- Add more customization options
- Integrate with productivity/to-do apps
- Add more pause/break options
- Improve website blocking functionality
In-app purchases
Blackjack Tracker
- System Hi-Opt I$1.99
- System Hi-Opt II$1.99
- System Hi/Lo$1.99
ScreenZen
- Kind Tip$5.00
- Generous Tip$10.00
- Amazing Tip$20.00
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- Fantastic Tip$40.00









