# Fast Customer vs Underground Prepper

The clearest difference is rating: Underground Prepper at 5.0 against Fast Customer's 2.3. Fast Customer's advantage is in-app purchases (none vs 3) and ratings volume (3 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Underground Prepper sells 3 in-app purchases, starting at $9.99 per month. Fast Customer asks for nothing beyond the download.

Underground Prepper holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

## The numbers

| Metric | Fast Customer | Underground Prepper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/fast-customer/id1422340204/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/underground-prepper/id6768668180/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 93 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [FastCustomer, Inc.](https://appshunter.io/developer/877380918) | [5th Studios, LLC](https://appshunter.io/developer/1896594590) |

## What reviewers say

### Fast Customer

[App page](https://appshunter.io/ios/app/fast-customer/id1422340204)

This app eliminates the need to wait on hold when contacting customer service. Simply tap a button, and the app will call you back when a representative is available.

**Highlights:** Eliminates waiting on hold, Callback feature, Contact customer service, User-friendly interface

**In-app purchases:** none


### Underground Prepper

[App page](https://appshunter.io/ios/app/underground-prepper/id6768668180)

This app helps you meticulously track your family's emergency supplies and preparedness levels. It organizes inventory, manages household member needs, and provides readiness tiers for various disaster scenarios. All data is stored locally for offline access and privacy.

**Highlights:** Family emergency preparedness tracking, Detailed inventory management, Household member profiles, Bugout bag planning, Offline functionality, Exportable reports, Preparedness checklists

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $9.99 | per month |
| Yearly Subscription | $109.99 | per year |
| Lifetime Membership | $349.99 | one-time |


## Frequently asked questions

### Is Fast Customer free?

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

### Is Underground Prepper free?

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

### Which has better reviews, Fast Customer or Underground Prepper?

Underground Prepper is rated higher. Fast Customer averages 2.3 out of 5 from 3 ratings, while Underground Prepper averages 5.0 from 1 ratings.

### Do Fast Customer or Underground Prepper have ads?

Neither Fast Customer nor Underground Prepper shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*