# Trillion vs WristScore

The clearest difference is ads: WristScore at none against Trillion's shown. WristScore also leads on update cadence (every 3 days vs every 12 months). Trillion's advantage is iOS requirement (13.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Trillion sells 2 in-app purchases, starting at $4.99 per month and WristScore sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Trillion ships an update every 12 months, WristScore every 3 days. The most recent releases landed on October 5, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Trillion | WristScore |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Every 3 days** |
| Size | 29 MB | 18 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [kota tada](https://appshunter.io/developer/1658942612) | [业瀚 覃](https://appshunter.io/developer/1894310124) |

## What reviewers say

### Trillion

[App page](https://appshunter.io/ios/app/trillion-probability-simu/id6743378063)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free for 1 month | $4.99 | per month |
| Ad-free for 1 year | $49.99 | per year |


### WristScore

[App page](https://appshunter.io/ios/app/wristscore-score-tracker/id6762507403)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $0.99 | one-time |


## Frequently asked questions

### Is Trillion free?

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

### Is WristScore free?

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

### Do Trillion or WristScore have ads?

Trillion shows ads; WristScore does not.

### Which is updated more often, Trillion or WristScore?

Trillion ships an update every 12 months, and WristScore every 3 days. Most recently, Trillion was updated on October 5, 2026 and WristScore on September 27, 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.*