Comparison

SubstiToothFairy vs Signal Up

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SubstiToothFairy

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
Read full description

SubstiToothFairy, LLC was established in 2008 throughout the Greater Philadelphia Region. There was a high urgency of the Dental Community to be serviced. SubstiToothFairy understands and continues to learn all the demands of all Dental Offices in Delaware, Pennsylvania, Maryland, and New Jersey, that reach out for help and therefore hand-picks only the BEST workers to represent SubstiToothFairy. We hold standards high by designing an intricate interview along with a Dentist feedback system that will aid in keeping standards at a supreme level. SubstiToothFairy strives not only to service the needs between Dental Practices that are in need of staff in order to maintain flow of the office and keep patients’ happy, but also to create jobs for professional dental staff looking for work in the states of Pennsylvania, Delaware, Maryland, and New Jersey. In 2023, SubstiToothFairy Dental Staffing Service has proudly become a member of the American Staffing Association.

About

Signal Up

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
Read full description

Signal Up helps ambitious professionals prepare for high-stakes workplace conversations. Whether you're pushing back on a VP, giving difficult feedback, or navigating a promotion conversation — we give you the exact words, calibrated for your audience. WHAT MAKES SIGNAL UP DIFFERENT Every phrase comes with three register variants — the same idea adjusted for your team, your peers, and leadership. No other app does this. You'll never sound too casual with your VP or too formal with your team again. DAILY PRACTICE One phrase per day. Read the situation, think about what you'd say, then see what works — and why. Record yourself before and after to hear your own improvement. 1,400+ PHRASES ACROSS 12 CATEGORIES • Pushback without burning bridges • Buying time under pressure • Giving and receiving feedback • Sounding senior in meetings • Steering unfocused meetings • Negotiating deadlines • Small talk with executives • And more 132 SCENE STUDIES Learn from real and fictional workplace moments. Interactive case studies walk you through setup, prompt, reveal, and takeaway. 25 COMMUNICATION FRAMEWORKS Proven patterns like "Name the Elephant" and "The Redirect" — each linked to phrases you can use immediately. BUILT FOR NON-NATIVE SPEAKERS Optional tips for Mandarin, Hindi, and Spanish speakers — not translations, but cultural guidance on delivery, tone, and common pitfalls. WORKS OFFLINE All content syncs to your device. Practice on the subway, before a meeting, or anywhere without signal. FREE TO START 50 free views to explore everything. Then upgrade to Pro for unlimited access, recording, and more. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

SubstiToothFairy4 screens
Signal Up4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
SubstiToothFairy versus Signal Up: the parameters behind the verdict, then further details
ParameterSubstiToothFairySignal Up
PriceFreeFree
Rating5.0 (6 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings6 — better1
Update frequencyEvery 6 weeksEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 — better17.0
Further details — not scored
Size117 MB17 MB
Age rating17+4+
DeveloperSubstiToothFairy LLCAxyTech LLC

Customer experience

SubstiToothFairy

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Signal Up

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SubstiToothFairy

No in-app purchases

None

Signal Up

No in-app purchases

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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