# Certain Check vs Heads Up Salon & Spa

The clearest difference is update cadence: Certain Check at every 4 weeks against Heads Up Salon & Spa's every 45 months. Certain Check also leads on ratings volume (8 vs 1). Heads Up Salon & Spa's advantage is rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Heads Up Salon & Spa holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Certain Check has 8 ratings behind it against 1, so its average is the more settled of the two.

Certain Check ships an update every 4 weeks, Heads Up Salon & Spa every 45 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Certain Check | Heads Up Salon & Spa |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (8 ratings)](https://appshunter.io/ios/app/certain-check-in/id992659426/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/heads-up-salon-and-spa/id1663294446/reviews)** |
| Number of ratings | **8** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 45 months |
| Monetization | Free | Free |
| Size | 46 MB | 28 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Certain, Inc.](https://appshunter.io/developer/813791820) | [Heads Up Salon & Spa](https://appshunter.io/developer/1663294448) |

## What reviewers say

### Certain Check

[App page](https://appshunter.io/ios/app/certain-check-in/id992659426)

Streamline event attendance management by quickly checking in participants and registering walk-ins directly from your mobile device. This tool syncs attendee information instantly with the main platform and allows for on-the-go profile edits. It also supports scanning QR codes for efficient entry.

**Highlights:** Check in event and session attendees, Edit attendee profile fields, Instant sync with Certain Platform, Add walk-in registrations, Scan QR codes from Certain Badges

**Features:** macOS Compatibility

**In-app purchases:** none


### Heads Up Salon & Spa

[App page](https://appshunter.io/ios/app/heads-up-salon-and-spa/id1663294446)

Easily book appointments, view service history, and receive exclusive deals from your favorite salon or spa. Connect directly to your account from your mobile device, perfect for managing your bookings outside of business hours.

**Highlights:** Schedule appointments, View service history, Receive special offers, Check loyalty points, Read and write reviews, Update contact details

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

**In-app purchases:** none


## Frequently asked questions

### Is Certain Check free?

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

### Is Heads Up Salon & Spa free?

Heads Up Salon & Spa is free to download, with no in-app purchases.

### Which has better reviews, Certain Check or Heads Up Salon & Spa?

Heads Up Salon & Spa is rated higher. Certain Check averages 4.8 out of 5 from 8 ratings, while Heads Up Salon & Spa averages 5.0 from 1 ratings.

### Do Certain Check or Heads Up Salon & Spa have ads?

Neither Certain Check nor Heads Up Salon & Spa shows ads.

### Which is updated more often, Certain Check or Heads Up Salon & Spa?

Certain Check ships an update every 4 weeks, and Heads Up Salon & Spa every 45 months. Most recently, Certain Check was updated on November 1, 2026 and Heads Up Salon & Spa on November 3, 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.*