# Sentinel Config vs Classifier Collection Tracker

The clearest difference is in-app purchases: Sentinel Config at none against Classifier Collection Tracker's 6. Sentinel Config also leads on iOS requirement (12.0 vs 18.6). Classifier Collection Tracker's advantage is update cadence (every 9 days vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. Classifier Collection Tracker sells 6 in-app purchases, starting at $4.99 per 3 months. Sentinel Config asks for nothing beyond the download.

Sentinel Config ships an update every 5 months, Classifier Collection Tracker every 9 days. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Sentinel Config | Classifier Collection Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (68 ratings)](https://appshunter.io/ios/app/classifier-collection-tracker/id1594081352/reviews)** |
| Number of ratings | — | **68** |
| Positive reviews | — | 67.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 23 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Aginova Sarl](https://appshunter.io/developer/434212882) | [App Deco Studio Inc.](https://appshunter.io/developer/835093422) |

## What reviewers say

### Sentinel Config

[App page](https://appshunter.io/ios/app/sentinel-config/id1457672545)

**Features:** macOS Compatibility

**In-app purchases:** none


### Classifier Collection Tracker

[App page](https://appshunter.io/ios/app/classifier-collection-tracker/id1594081352)

Digitize and manage your diverse collections with this app. Catalog items, track what you need, and generate statistics. Share and sync collections across devices.

**Highlights:** Catalog any collectible, Wishlist management, Collection statistics, Customizable templates, Tagging for organization, Cross-device sync, Export collections

**Features:** Family Sharing, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Classifier Pro (Quarterly) | $4.99 | per 3 months |
| Classifier Pro (Quarterly) | $7.99 | per 3 months |
| Classifier Pro (Yearly) | $19.99 | per year |
| Classifier Pro (Yearly) | $34.99 | per year |
| Classifier Pro (Lifetime) | $49.99 | one-time |
| Classifier Pro (Lifetime) | $89.99 | one-time |


## Frequently asked questions

### Is Sentinel Config free?

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

### Is Classifier Collection Tracker free?

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

### Do Sentinel Config or Classifier Collection Tracker have ads?

Neither Sentinel Config nor Classifier Collection Tracker shows ads.

### Which is updated more often, Sentinel Config or Classifier Collection Tracker?

Sentinel Config ships an update every 5 months, and Classifier Collection Tracker every 9 days. Most recently, Sentinel Config was updated on October 3, 2026 and Classifier Collection Tracker on October 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.*