# GuideToMetal vs RosterRocket

The clearest difference is update cadence: GuideToMetal at every 10 days against RosterRocket's every 2 months. GuideToMetal also leads on iOS requirement (8.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. GuideToMetal sells 1 in-app purchase, starting at $17.99 per year and RosterRocket sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

GuideToMetal ships an update every 10 days, RosterRocket every 2 months. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | GuideToMetal | RosterRocket |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/guidetometal/id1576343522/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 42 MB | 39 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TURKER DEMIRDISI DOKUM LIMITED SIRKETI](https://appshunter.io/developer/1573241865) | [Jim Kandias](https://appshunter.io/developer/398630199) |

## What reviewers say

### GuideToMetal

[App page](https://appshunter.io/ios/app/guidetometal/id1576343522)

This app provides chemical analysis and standards for ferrous and non-ferrous compounds. It also offers charge calculation analysis and phase diagrams for select elements.

**Highlights:** Chemical analysis of compounds, Standards for ferrous and non-ferrous metals, Charge calculation analysis, Phase diagrams of elements, Supports iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual  Subscription | $17.99 | per year |


### RosterRocket

[App page](https://appshunter.io/ios/app/rosterrocket-shift-planner/id6744331786)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $4.99 | per 7 days |
| Annual Pro Plan | $49.99 | per year |


## Frequently asked questions

### Is GuideToMetal free?

GuideToMetal is free to download, with in-app purchases available.

### Is RosterRocket free?

RosterRocket is free to download, with in-app purchases available.

### Do GuideToMetal or RosterRocket have ads?

Neither GuideToMetal nor RosterRocket shows ads.

### Which is updated more often, GuideToMetal or RosterRocket?

GuideToMetal ships an update every 10 days, and RosterRocket every 2 months. Most recently, GuideToMetal was updated on October 6, 2026 and RosterRocket on October 15, 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.*