IP vs Missing Number Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IP
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** Attention: In order to function properly, Integra Access needs IP-INTEGRA Access Control Central. IP-INTEGRA ACC is a FREE application for IP-INTEGRA Access Control Solution developed by FREUND. Features: - QR Code Provisioning - Door unlock via QR code scan - Two Factor Authentication (optional) - Overview of available doors per each zone - Favorite doors for fast access - Option to use biometric local authentication to authorize door opening - Light/Dark appearance option
Missing Number Calculator
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Instantly solve missing number math puzzles! Find the value of the blank with this intuitive calculator app. Missing Number Calculator lets you solve equations with a missing value. Enter a math expression with a blank, and the app finds the answer instantly. Perfect for learning, practice, or fun!
Screenshots
Verdict
The clearest difference is price: IP at Free against Missing Number Calculator's $0.99. IP also leads on iOS requirement (11.0 vs 17.0). Missing Number Calculator's advantage is update cadence (every 3 days vs every 19 months). On 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
IP is free to download; Missing Number Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
IP ships an update every 19 months, Missing Number Calculator every 3 days. The most recent releases landed on September 16, 2026 and September 27, 2026 respectively.
| Parameter | IP | Missing Number Calculator |
|---|---|---|
| Price | Free — better | $0.99 |
| Update frequency | Every 19 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 19 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | FREUND | Infinity Inc. (Apps) |
In-app purchases
IP
No in-app purchases
Missing Number Calculator
No in-app purchases
Questions
Is IP free?
Is Missing Number Calculator free?
Do IP or Missing Number Calculator have ads?
Which is updated more often, IP or Missing Number Calculator?
Other comparisons
