Prison Engine vs N product
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prison Engine
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Prison Engine is your solution to expensive inmate calls. Our service provides local landline numbers near prisons, allowing inmates to call you at reduced rates. Simply install the app, create an account, and start receiving calls directly on your mobile device. Stay connected with your loved ones without breaking the bank. Download Prison Engine today and experience affordable communication.
N product
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N-Product is a simple daily tracker that helps you understand which items really shape your days. Every day you add the things that mattered most – your car, phone, book, coffee, jewelry, laptop and more – describe why they were important, rate them from 1 to 10, and then explore clean, visual analytics. The app is built around four tabs: Today – Add today’s important items with name, category, description, photo, rating and date. See all items for the selected day in a clear list of cards. Items – Browse and manage every item you’ve ever added. Filter by date or category, sort by rating or time, open full details and edit or delete items. Use the Random Item of the Day feature to quickly pick or suggest something to focus on today. Analytics – View charts of ratings over time and how many items you add each day. Filter by time range and category, and see key stats like total items, average rating and your most frequent category. Profile – Customize your profile with avatar, name and short status. See high-level stats such as total items, average rating and “tracking since” date. N-Product features a minimal, modern interface with focus on photos and clean cards. The layout is adaptive for iPhone, iPad (portrait and landscape) and responsive web, so you can track your days comfortably on any screen.
Screenshots
Verdict
Prison Engine and N product are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Prison Engine | N product |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.4 — better | 13.0 |
| Further details — not scored | ||
| Size | 18 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Prison Engine | ADAM FOSTER |
In-app purchases
Prison Engine
No in-app purchases
N product
No in-app purchases








