# TradeCarbon vs Subscription Tracker

The clearest difference is in-app purchases: TradeCarbon at none against Subscription Tracker's 2. Subscription Tracker's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Subscription Tracker sells 2 in-app purchases, starting at $1.99 per month. TradeCarbon asks for nothing beyond the download.

TradeCarbon ships an update weekly, Subscription Tracker every 6 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | TradeCarbon | Subscription Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 6 days** |
| Size | 45 MB | 64 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [AirSmat Limited](https://appshunter.io/developer/1589446191) | [AI Conversations Limited](https://appshunter.io/developer/1878342624) |

## What reviewers say

### TradeCarbon

[App page](https://appshunter.io/ios/app/tradecarbon/id6752955728)

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

**In-app purchases:** none


### Subscription Tracker

[App page](https://appshunter.io/ios/app/subscription-tracker-subvault/id6759370457)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SubVault Monthly | $1.99 | per month |
| SubVault Annual | $9.99 | per year |


## Frequently asked questions

### Is TradeCarbon free?

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

### Is Subscription Tracker free?

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

### Do TradeCarbon or Subscription Tracker have ads?

Neither TradeCarbon nor Subscription Tracker shows ads.

### Which is updated more often, TradeCarbon or Subscription Tracker?

TradeCarbon ships an update weekly, and Subscription Tracker every 6 days. Most recently, TradeCarbon was updated on October 25, 2026 and Subscription Tracker on October 28, 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.*