# f(x) vs 魔塔999 タイムライン式デッキRPG

The clearest difference is ads: f(x) at none against 魔塔999 タイムライン式デッキRPG's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 8, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | f(x) | 魔塔999 タイムライン式デッキRPG |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | Monthly |
| Monetization | — | Ad-supported |
| Size | 77 MB | 521 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Ryo Matsumoto](https://appshunter.io/developer/1725054568) | [Hirokazu Oshimo](https://appshunter.io/developer/1627742277) |

## What reviewers say

### f(x)

[App page](https://appshunter.io/ios/app/fx/id6475749250)

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

**In-app purchases:** none


### 魔塔999 タイムライン式デッキRPG

[App page](https://appshunter.io/ios/app/999-rpg/id6784867308)

A strategic card RPG where players arrange cards on a timeline to battle enemies. It features a deck-building system with no luck involved, a roguelike progression with permanent upgrades, and a deep combat system against various monsters and bosses.

**Highlights:** Timeline-based card placement combat, Deck-building with no draw luck, Roguelike progression with permanent upgrades, Incremental growth and power scaling, Monster encyclopedia, Card crafting and synthesis, One-handed, vertical screen play

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

**In-app purchases:** none


## Frequently asked questions

### Is f(x) free?

f(x) is free to download, with no in-app purchases.

### Is 魔塔999 タイムライン式デッキRPG free?

魔塔999 タイムライン式デッキRPG is free to download, with no in-app purchases.

### Do f(x) or 魔塔999 タイムライン式デッキRPG have ads?

魔塔999 タイムライン式デッキRPG shows ads; f(x) does not.

### Which is updated more often, f(x) or 魔塔999 タイムライン式デッキRPG?

f(x) ships an update monthly, and 魔塔999 タイムライン式デッキRPG monthly. Most recently, f(x) was updated on September 8, 2026 and 魔塔999 タイムライン式デッキRPG on September 14, 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.*