# Base PRO vs OpenSpam

The clearest difference is review sentiment: Base PRO at 100% against OpenSpam's 50%. Base PRO also leads on device support (4 vs 1) and iOS requirement (12 vs 17.6). OpenSpam's advantage is update cadence (every 3 weeks vs every 4 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Base PRO ships an update every 4 months, OpenSpam every 3 weeks. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Base PRO | OpenSpam |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/openspam/id6755652998/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Size | 9 MB | 19 MB |
| Requires iOS | **12** | 17.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nic Kolbe](https://appshunter.io/developer/512550641) | [Joaquin Garcia](https://appshunter.io/developer/657238286) |

## What reviewers say

### Base PRO

[App page](https://appshunter.io/ios/app/base-pro/id1482739496)

This app simplifies base conversions from Base 2 to Base 20 with precision and clarity. It offers interactive visual explanations of number systems, making it ideal for students and educators learning computer science and digital computation.

**Highlights:** Base conversions (2-20), Precision and clarity, Visual Flow Function, Interactive learning, Full-screen mode, Adjustable sizing

**Features:** Vision Pro support

**In-app purchases:** none


### OpenSpam

[App page](https://appshunter.io/ios/app/openspam/id6755652998)

This app identifies and blocks unwanted calls using a community-powered database and a risk score algorithm. It offers customizable blocking levels and ensures user privacy by not collecting personal data or accessing contacts for commercial purposes.

**Highlights:** Instant call identification, Customizable blocking levels, Community reporting, Built-in search for suspicious numbers, Allowlist for trusted numbers, Ad-free experience

**In-app purchases:** none


## Frequently asked questions

### Is Base PRO free?

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

### Is OpenSpam free?

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

### Do Base PRO or OpenSpam have ads?

Neither Base PRO nor OpenSpam shows ads.

### Which is updated more often, Base PRO or OpenSpam?

Base PRO ships an update every 4 months, and OpenSpam every 3 weeks. Most recently, Base PRO was updated on October 6, 2026 and OpenSpam on October 10, 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.*