# X Progress vs B³ Calculator

The clearest difference is price: X Progress at Free against B³ Calculator's $0.99. X Progress also leads on device support (4 vs 2). B³ Calculator's advantage is in-app purchases (none vs 10) and iOS requirement (16.0 vs 18.0). On ads there is nothing between them.

X Progress is free to download; B³ Calculator costs $0.99 up front. X Progress sells 10 in-app purchases, starting at $0.49 per month. B³ Calculator asks for nothing beyond the download.

## The numbers

| Metric | X Progress | B³ Calculator |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.7 (87 ratings)](https://appshunter.io/ios/app/x-progress/id1359786804/reviews)** | — |
| Number of ratings | **87** | — |
| Positive reviews | 59.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 154 MB | 2 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [鹏 张](https://appshunter.io/developer/1198461085) | [玉美 张](https://appshunter.io/developer/1550410737) |

## What reviewers say

### X Progress

[App page](https://appshunter.io/ios/app/x-progress/id1359786804)

Track progress for any event, from daily to custom intervals. Set reminders, add notes, and utilize auto-repeat. View progress on your Lock Screen, Home Screen, and Apple Watch with customizable themes and widgets. Share progress with friends using Zen Mode and SharePlay.

**Highlights:** Customizable event tracking (daily, weekly, monthly, yearly), Lock Screen and Home Screen widgets, Apple Watch app and complications, Zen Mode with SharePlay integration, Multiple designer themes, iCloud syncing across devices, iPad optimized with Split View

**Features:** Family Sharing, Apple Watch app, Vision Pro support, SharePlay

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| X Progress Unlimited Monthly | $0.49 | per month |
| Turtle Theme | $0.99 | one-time |
| WuFan Theme | $0.99 | one-time |
| Snail Theme | $0.99 | one-time |
| The Color of Time Theme | $0.99 | one-time |
| NUONUO Theme | $0.99 | one-time |
| Full Moon Theme | $0.99 | one-time |
| Expedition Theme | $0.99 | one-time |
| Toby Likes Bone Theme | $0.99 | one-time |
| X Progress Unlimited Lifetime | $19.99 | one-time |


### B³ Calculator

[App page](https://appshunter.io/ios/app/b-calculator/id6450912372)

**In-app purchases:** none


## Frequently asked questions

### Is X Progress free?

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

### Is B³ Calculator free?

B³ Calculator costs $0.99, with no in-app purchases.

### Do X Progress or B³ Calculator have ads?

Neither X Progress nor B³ Calculator shows ads.

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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.*