# IMO Signs vs Container Operational Deck

The clearest difference is update cadence: Container Operational Deck at every 41 months against IMO Signs's every 95 months. Container Operational Deck also leads on iOS requirement (15.6 vs 17.6). IMO Signs's advantage is price ($3.99 vs $5.99). On ads, in-app purchases and device support there is nothing between them.

IMO Signs costs $3.99 and Container Operational Deck $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

IMO Signs ships an update every 95 months, Container Operational Deck every 41 months. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | IMO Signs | Container Operational Deck |
| --- | --- | --- |
| Price | **$3.99** | $5.99 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 95 months | **Every 41 months** |
| Monetization | Paid | — |
| Size | 194 MB | 49 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sergejs Zeigurs](https://appshunter.io/developer/1439812373) | [Maxim Lukyanenko](https://appshunter.io/developer/1496252741) |

## What reviewers say

### IMO Signs

[App page](https://appshunter.io/ios/app/imo-signs/id1439813671)

This educational app allows users to search for symbols by ID or name. It's designed for studying and reinforcing knowledge in a specific subject area. Enjoy a straightforward learning experience.

**Highlights:** Search by ID, Search by Name, Knowledge rechecking, Study aid

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Container Operational Deck

[App page](https://appshunter.io/ios/app/container-operational-deck-ces/id6449503931)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IMO Signs free?

IMO Signs costs $3.99, with no in-app purchases.

### Is Container Operational Deck free?

Container Operational Deck costs $5.99, with no in-app purchases.

### Do IMO Signs or Container Operational Deck have ads?

Neither IMO Signs nor Container Operational Deck shows ads.

### Which is updated more often, IMO Signs or Container Operational Deck?

IMO Signs ships an update every 95 months, and Container Operational Deck every 41 months. Most recently, IMO Signs was updated on October 8, 2026 and Container Operational Deck on October 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*