Comparison

Duo Chelsea vs Synthax

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

Head to head

About

Duo Chelsea

Features

Read full description

Download the Duo App today to plan and schedule your personal training and classes! From this mobile App you can view class schedules, sign-up for classes, as well as view the studio’s location information. Optimize your time and maximize the convenience of signing up for classes from your device! Download this App today!

About

Synthax

Streamline your healthcare workflow by summarizing consultations, procedures, and reports. This app enhances productivity for medical professionals.

Highlights

Summarize consultations
Document procedures
Generate reports
Enhance productivity
Healthcare workflow optimization

Features

Read full description

Synthax is the healthcare productivity app. Summarise consultations, procedures, reporting and more!

Screenshots

Duo Chelsea3 screens

Synthax4 screens

Verdict

The call

The clearest difference is ads: Synthax at none against Duo Chelsea's shown. Synthax also leads on update cadence (fortnightly vs every 4 months). Duo Chelsea's advantage is iOS requirement (14.0 vs 16.0). On price, 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

Duo Chelsea ships an update every 4 months, Synthax fortnightly. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 5 level

Duo Chelsea versus Synthax: the parameters behind the verdict, then further details
Parameter	Duo Chelsea	Synthax
Price	Free	Free
Positive reviews	—	100.0% of reviews
Update frequency	Every 4 months	Fortnightly — better
Ads	Yes	No — better
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPad, iPod — better	iPhone, iPad
Requires iOS	14.0 — better	16.0
Further details — not scored
Size	128 MB	20 MB
Age rating	4+	4+
Developer	Duo Chelsea Limited	Synthac

In-app purchases

None

Duo Chelsea

No in-app purchases

None

Synthax

No in-app purchases

Questions

Is Duo Chelsea free?

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

Is Synthax free?

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

Do Duo Chelsea or Synthax have ads?

Duo Chelsea shows ads; Synthax does not.

Which is updated more often, Duo Chelsea or Synthax?

Duo Chelsea ships an update every 4 months, and Synthax fortnightly. Most recently, Duo Chelsea was updated on November 2, 2026 and Synthax on October 30, 2026.