Comparison

Perseus vs Mortho

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

Head to head

About

Perseus

Features

Read full description

Perseus guides the surgeon during femoral resection in TKA. Data acquired through a Bluetooth LE inertial sensor provide angle information for a better prosthesis alignment. All in three simple steps: -Press Start and select Left or Right limb -Start data Acquisition -Follow app instruction on Cutting guide positioning Visit our website for further information: http://www.smartperseus.com/ Perseus is an Orthokey Italia srl product: http://www.orthokey.com/

About

Mortho

Features

Read full description

Mortho is a digital workflow and case information management platform for total joint arthroplasty. It provides a centralized system to organize, store, and access preoperative and postoperative case information related to hip and knee replacement procedures.

Screenshots

Mortho4 screens

Verdict

The call

The clearest difference is update cadence: Mortho at every 3 weeks against Perseus's every 3 months. Mortho also leads on device support (3 vs 1). Perseus's advantage is iOS requirement (9.3 vs 15.0). On price, 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.

UpkeepUpdate frequency

Perseus ships an update every 3 months, Mortho every 3 weeks. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

Scorecard3 real differences · 3 level

Perseus versus Mortho: the parameters behind the verdict, then further details
Parameter	Perseus	Mortho
Price	Free	Free
Update frequency	Every 3 months	Every 3 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPad	iPhone, iPad, iPod — better
Requires iOS	9.3 — better	15.0
Further details — not scored
Size	71 MB	125 MB
Age rating	17+	12+
Developer	Orthokey Italia s.r.l.	michael murphy

In-app purchases

None

Perseus

No in-app purchases

None

Mortho

No in-app purchases

Questions

Is Perseus free?

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

Is Mortho free?

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

Do Perseus or Mortho have ads?

Neither Perseus nor Mortho shows ads.

Which is updated more often, Perseus or Mortho?

Perseus ships an update every 3 months, and Mortho every 3 weeks. Most recently, Perseus was updated on October 7, 2026 and Mortho on October 10, 2026.