# Certillion vs ABO US

Certillion and ABO US are too close to call on the numbers: across 7 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Certillion ships an update every 5 weeks, ABO US monthly. The most recent releases landed on September 23, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Certillion | ABO US |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/abo-us/id6754783113/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 10.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free | Free |
| Size | 33 MB | 7 MB |
| Requires iOS | 16.1 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [e-Sec](https://appshunter.io/developer/657383169) | [Reobote Comercio de Equipamentos Odontologico Eireli](https://appshunter.io/developer/1191711473) |

## What reviewers say

### Certillion

[App page](https://appshunter.io/ios/app/certillion/id1489758453)

Sign documents on your mobile device using digital certificates. This app offers legal validity, internet speed, and mobile convenience for contracts, bills, and other secure transactions. Obtain a digital certificate for free at registered locations or use your existing A1 certificate.

**Highlights:** Sign documents with digital certificates, Legal validity for transactions, Mobile convenience for signing anywhere, Securely sign contracts and bills, Free digital certificate acquisition

**In-app purchases:** none


### ABO US

[App page](https://appshunter.io/ios/app/abo-us/id6754783113)

This app supports Brazilian dentists in the United States with essential resources for professional development. It offers exclusive content, community updates, and tools for career advancement, including INBDE preparation.

**Highlights:** Exclusive member content, Community initiatives and activities, Access to technical materials, INBDE practice questions, Personalized study plans, Performance tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Certillion free?

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

### Is ABO US free?

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

### Do Certillion or ABO US have ads?

Neither Certillion nor ABO US shows ads.

### Which is updated more often, Certillion or ABO US?

Certillion ships an update every 5 weeks, and ABO US monthly. Most recently, Certillion was updated on September 23, 2026 and ABO US on September 12, 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.*