Maximum Halftone Screen Ruling vs 100k Mentor Challenge
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Maximum Halftone Screen Ruling
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This app calculates the maximum halftone screen ruling that can be used to achieve any desired number gray levels.
100k Mentor Challenge
Connect with mentors or aspiring leaders to achieve career goals. This app helps diverse college students gain career advice, build networks, and boost confidence. Complete your profile to join the next mentorship match.
- Mentorship matching
- Career advice
- Networking opportunities
- Goal encouragement
- Profile completion
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Inspire the next generation of leaders or get the career advice, network, and encouragement you need to tackle your goals. Replace career anxiety with confidence! Download the app, complete your profile, and join the next mentorship match.
Screenshots
Verdict
The clearest difference is price: 100k Mentor Challenge at Free against Maximum Halftone Screen Ruling's $0.99. 100k Mentor Challenge also leads on update cadence (monthly vs every 38 months). Maximum Halftone Screen Ruling's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement 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
100k Mentor Challenge is free to download; Maximum Halftone Screen Ruling costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Maximum Halftone Screen Ruling ships an update every 38 months, 100k Mentor Challenge monthly. The most recent releases landed on February 4, 2026 and October 14, 2026 respectively.
| Parameter | Maximum Halftone Screen Ruling | 100k Mentor Challenge |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 4.2 (19 ratings) — better |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | — | 19 — better |
| Update frequency | Every 38 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 4 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Manfred Breede | ProMazo, Inc. |
In-app purchases
Maximum Halftone Screen Ruling
No in-app purchases
100k Mentor Challenge
No in-app purchases
