Comparison

Boost System vs S

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

Head to head

App for gym members

About

Boost System

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Boost is an app for members in gyms connected to BoostSystem. In this app you can book classes, open the front door, and see all information linked to your gym membership. You can access: - Door opener. No more access cards. Open the door directly from the app. - My profile. A history of all your payments, bookings, and visits. - Booking. Book your future classes in the app. - Center information. Get an overview of when the center is crowded and when there is plenty of space. Contact information.

About

S

Features

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The S-Matic 2.0 app enables a comfortable and customized setting of the S-Matic 2.0 mattress. The app on your smart phone or tablet is simply connected to the mattress via Bluetooth. Once connected you can either choose from predefined settings or adjust the firmness level yourself whereafter this setting can be saved as your favorite. S-Matic 2.0 will support you with an optimal sleep experience.

Screenshots

Boost System4 screens

S4 screens

Verdict

The call

The clearest difference is update cadence: Boost System at every 2 months against S's every 8 months. S's advantage is iOS requirement (13.0 vs 15.0). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Boost System ships an update every 2 months, S every 8 months. The most recent releases landed on October 13, 2026 and October 20, 2026 respectively.

Scorecard2 real differences · 4 level

Boost System versus S: the parameters behind the verdict, then further details
Parameter	Boost System	S
Price	Free	Free
Update frequency	Every 2 months — better	Every 8 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	15.0	13.0 — better
Further details — not scored
Size	24 MB	14 MB
Age rating	4+	4+
Developer	Cerum AS	Starsprings AB

In-app purchases

None

Boost System

No in-app purchases

None

S

No in-app purchases

Questions

Is Boost System free?

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

Is S free?

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

Do Boost System or S have ads?

Neither Boost System nor S shows ads.

Which is updated more often, Boost System or S?

Boost System ships an update every 2 months, and S every 8 months. Most recently, Boost System was updated on October 13, 2026 and S on October 20, 2026.