# Authenticator vs Tummy Meter

The clearest difference is ads: Tummy Meter at none against Authenticator's shown. Tummy Meter also leads on monetization model (free vs ad-supported). Authenticator's advantage is update cadence (every 2 days vs every 4 days). On price, rating, ratings volume and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Authenticator against 5.0 for Tummy Meter. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Authenticator ships an update every 2 days, Tummy Meter every 4 days. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Authenticator | Tummy Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/authenticator-fake-scanner/id6499281052/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/tummy-meter/id6762532165/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 4 days |
| Monetization | Ad-supported | **Free** |
| Size | 4 MB | 35 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Harden Consulting LLC](https://appshunter.io/developer/366561891) | [Aryan Porwal](https://appshunter.io/developer/1885860027) |

## What reviewers say

### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-fake-scanner/id6499281052)

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.

**Highlights:** Fake palm scanner, Fake retina scanner, Fake fingerprint scanner, Passcode entry simulation, Customizable authentication outcomes, Override authentication option

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

**In-app purchases:** none


### Tummy Meter

[App page](https://appshunter.io/ios/app/tummy-meter/id6762532165)

This app uses a simulated tummy scan to playfully determine a child's fullness level during mealtimes. It's designed to add a bit of fun and potentially ease the struggles of dealing with picky eaters. The results are randomly generated for entertainment.

**Highlights:** Fake tummy scan simulation, Randomly generated fullness verdicts, Designed for picky eaters, No ads or sign-up required, Works entirely offline, Parent-created tool

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

**In-app purchases:** none


## Frequently asked questions

### Is Authenticator free?

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

### Is Tummy Meter free?

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

### Which has better reviews, Authenticator or Tummy Meter?

Authenticator and Tummy Meter are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Authenticator or Tummy Meter have ads?

Authenticator shows ads; Tummy Meter does not.

### Which is updated more often, Authenticator or Tummy Meter?

Authenticator ships an update every 2 days, and Tummy Meter every 4 days. Most recently, Authenticator was updated on October 7, 2026 and Tummy Meter on October 2, 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.*