# Refuel Cost Calculator vs Tibia Observer

The clearest difference is update cadence: Tibia Observer at every 2 months against Refuel Cost Calculator's every 3 months. Refuel Cost Calculator's advantage is iOS requirement (13.0 vs 15.6). On price, ads, 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.

Refuel Cost Calculator ships an update every 3 months, Tibia Observer every 2 months. The most recent releases landed on September 27, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Refuel Cost Calculator | Tibia Observer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.4 (12 ratings)](https://appshunter.io/ios/app/tibia-observer/id1585637635/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 8 MB | 30 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Marcelo Alves Lima](https://appshunter.io/developer/1446493990) | [CipSoft GmbH](https://appshunter.io/developer/373536773) |

## What reviewers say

### Refuel Cost Calculator

[App page](https://appshunter.io/ios/app/refuel-cost-calculator/id1493117311)

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

**In-app purchases:** none


### Tibia Observer

[App page](https://appshunter.io/ios/app/tibia-observer/id1585637635)

Stay informed about in-game events, raids, and auctions for your favorite MMORPG. Receive push notifications for double XP weekends, upcoming raids, and character auctions. Monitor housing markets and game news directly on your device.

**Highlights:** Raid notifications, Event reminders (XP, loot, respawn), Official game news feed, Character auction alerts, Housing market monitoring, Offline training status, Mini world change alerts

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Refuel Cost Calculator free?

Refuel Cost Calculator is free to download, with no in-app purchases.

### Is Tibia Observer free?

Tibia Observer is free to download, with no in-app purchases.

### Do Refuel Cost Calculator or Tibia Observer have ads?

Neither Refuel Cost Calculator nor Tibia Observer shows ads.

### Which is updated more often, Refuel Cost Calculator or Tibia Observer?

Refuel Cost Calculator ships an update every 3 months, and Tibia Observer every 2 months. Most recently, Refuel Cost Calculator was updated on September 27, 2026 and Tibia Observer on September 29, 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.*