ACO Viewer vs Authenticator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ACO Viewer
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AC Viewer is a part of the global platform that will enable mass adoption of AR compatible devices, including smart glasses by Apple, Google, and Microsoft. The Augmented.City platform developed by an Italian technology startup consists of three key solutions – a free SDK for developers, AR software, and mobile apps for scanning surrounding objects and demonstrating augmented reality. AC Viewer is exactly the application responsible for the demonstrating part. As soon as a smartphone is pointed on a real object, additional information from augmented reality will be displayed in the mapped city. For now the tourists and the inhabitants of the following cities can use the application: Bari(South Italy) – the whole city St.Petersburg some parts of the city center), Amsterdam ( the Dam Square). The application shows the following information on top of the buildings in real time: Viewing 3D models; Historical facts about tourist attractions; Construction plans.
Authenticator
Simulate biometric authentication for creative projects. This app allows you to choose between palm, retina, or fingerprint scans, or passcode entry. Customize the outcome to always fail, always succeed, or use an override for demonstrations.
- Fake palm scanner
- Fake retina scanner
- Fake fingerprint scanner
- Passcode entry simulation
- Customizable authentication outcomes
- Override authentication option
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An app for fake authentication for movie prop, plays, or demonstrations. Choose to scan palm, retina, fingerprint, or enter a passcode. Choose to always fail, always authenticate, or a variety of options, including an override to authenticate.
Screenshots
Verdict
The clearest difference is ads: ACO Viewer at none against Authenticator's shown. ACO Viewer also leads on iOS requirement (12.0 vs 15.0). Authenticator's advantage is update cadence (every 2 days vs every 4 months). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ACO Viewer ships an update every 4 months, Authenticator every 2 days. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.
| Parameter | ACO Viewer | Authenticator |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 4 months | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 100 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | AUGMENTED CITY SRL | Harden Consulting LLC |
In-app purchases
ACO Viewer
No in-app purchases
Authenticator
No in-app purchases
Questions
Is ACO Viewer free?
Is Authenticator free?
Do ACO Viewer or Authenticator have ads?
Which is updated more often, ACO Viewer or Authenticator?
Other comparisons
