Zero vs Memory Vault Plus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zero
This tool helps calculate the optimal strategy allocation for two players in a zero-sum game. Input your strategies, and it will determine the frequency each should be used for sports, politics, or military scenarios.
- Zero-sum game strategy calculation
- Optimal allocation determination
- Supports sports, politics, military
- Frequency of strategy employment
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This is a zero-sum game calculator. It is used to help determine the proper allocation of a finite list of strategies for two players in a zero-sum game (e.g. sports games, political campaigns, military operations). You provide the inputs, and the calculator will determine how often each strategy should be employed.
Memory Vault Plus
Create your personal database to store and retrieve any information you might forget. This app helps you instantly recall names, birthdays, movies, and more by linking items with keywords and hints.
- Personal database creation
- Keyword and hint association
- Instant information retrieval
- Recall forgotten names and facts
- Organize personal memories
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Never forget anything again! Your Own Personal Database Now, with Memory Vault, you always have your own personal database with you …permanently available to retrieve information you may have forgotten and want to remember. We’ve all had that frustrating experience of not being able to remember something that we know very well, but just can’t think of it: a friend’s name, a relative’s birthday, a restaurant, a favorite movie, an actor, etc. Now these slippery memories can be retrieved instantly with Memory Vault. How It Works Memory Vault stores the item you want to remember along with keywords and hints that remind you of the item and links them together. Later, although you may not be able to remember the item, when thinking of it, you will recall the keywords or hints related to it. Merely enter the keywords or hints that you do remember. Memory Vault searches your database for a match of the keyword or hint with the forgotten item and displays it. Voila! The name, place or thing you couldn’t remember is found!
Screenshots
Verdict
The clearest difference is update cadence: Memory Vault Plus at every 5 weeks against Zero's every 22 months. Memory Vault Plus also leads on ratings volume (8 vs 2). Zero's advantage is rating (5.0 vs 4.6) and iOS requirement (12.0 vs 18.6). On price, review sentiment, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Zero holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 2 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Zero ships an update every 22 months, Memory Vault Plus every 5 weeks. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.
| Parameter | Zero | Memory Vault Plus |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.6 (8 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 8 — better |
| Update frequency | Every 22 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, Apple Watch — better |
| Requires iOS | 12.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 9 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Troy McCurry | Cinnamon Mobile LLC |
Customer experience
Zero
Memory Vault Plus
In-app purchases
Zero
No in-app purchases
Memory Vault Plus
No in-app purchases









