# SubstiToothFairy vs Signal Up

The clearest difference is update cadence: Signal Up at every 4 days against SubstiToothFairy's every 6 weeks. SubstiToothFairy's advantage is monetization model (free vs freemium) and ratings volume (6 vs 1). On price, rating, ads 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 SubstiToothFairy against 5.0 for Signal Up. That said, the two scores are not equally well evidenced: SubstiToothFairy has 6 ratings behind it against 1, so its average is the more settled of the two.

SubstiToothFairy ships an update every 6 weeks, Signal Up every 4 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SubstiToothFairy | Signal Up |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (6 ratings)](https://appshunter.io/ios/app/substitoothfairy/id6504783043/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/signal-up/id6760925611/reviews) |
| Number of ratings | **6** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | **Free** | Freemium |
| Size | 117 MB | 17 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [SubstiToothFairy LLC](https://appshunter.io/developer/1753839948) | [AxyTech LLC](https://appshunter.io/developer/1886573354) |

## What reviewers say

### SubstiToothFairy

[App page](https://appshunter.io/ios/app/substitoothfairy/id6504783043)

This service connects dental practices with pre-screened, high-quality dental professionals. It aims to ensure dental offices maintain smooth operations and patient satisfaction by providing reliable staffing solutions. The platform also creates job opportunities for dental staff seeking employment.

**Highlights:** Connects dental practices with staff, Pre-screens dental professionals, Supports offices in PA, DE, MD, NJ, Creates job opportunities for dental staff, Dentist feedback system, Member of American Staffing Association

**Features:** macOS Compatibility

**In-app purchases:** none


### Signal Up

[App page](https://appshunter.io/ios/app/signal-up/id6760925611)

Master high-stakes workplace conversations with tailored phrases and practice scenarios. Get exact wording calibrated for your audience, from VPs to your team. Improve your communication skills daily with expert frameworks and scene studies.

**Highlights:** Tailored phrases for different audiences, Daily practice with one phrase, 1,400+ phrases across 12 categories, 132 interactive scene studies, 25 communication frameworks, Offline access to content, Tips for non-native speakers

**Features:** macOS Compatibility, Family Sharing

**In-app purchases:** none


## Frequently asked questions

### Is SubstiToothFairy free?

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

### Is Signal Up free?

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

### Which has better reviews, SubstiToothFairy or Signal Up?

SubstiToothFairy and Signal Up are both rated 5.0 out of 5 on the App Store, from 6 and 1 ratings respectively.

### Do SubstiToothFairy or Signal Up have ads?

Neither SubstiToothFairy nor Signal Up shows ads.

### Which is updated more often, SubstiToothFairy or Signal Up?

SubstiToothFairy ships an update every 6 weeks, and Signal Up every 4 days. Most recently, SubstiToothFairy was updated on November 4, 2026 and Signal Up on October 31, 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.*