Comparison

loadsol vs Calleis

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

Head to head

loadsol

force sensor app for loadsol

prosthetic cover

About

loadsol

Features

Read full description

loadsol® monitors the load between soft and hard surfaces. • Analyses the plantar force in static and dynamic • Displays bipedal force in time curves • Shows current load of left and right foot in bar diagrams • Counts steps, calculates average contact time and peak force • Determines average loading rate and cadence • Displays loading rate per step during walking or running • Gives feedback if loading rate is within a certain range • Computes force-time-integrals and factor of imbalance • Sound and vibration feedback given for two force levels • Time stamp allows temporal allocation of events in videos • Displays acceleration data synchronous to force data • Data can be exported in ASCII format • Usable on iPhone, iPad or iPod touch with Bluetooth LE® • Requires iOS Version 10 to 13

About

Calleis

Features

Read full description

CALLEIS is the tool to design, customize and style the semi-rigid prosthetic cover CALLEIS SHAPE or CALLEIS CLASSIC, and order it in one Click.

Screenshots

loadsol4 screens

Calleis4 screens

Verdict

The call

The clearest difference is update cadence: loadsol at every 3 weeks against Calleis's every 24 months. loadsol also leads on iOS requirement (10.0 vs 12.0). 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

loadsol ships an update every 3 weeks, Calleis every 24 months. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 4 level

loadsol versus Calleis: the parameters behind the verdict, then further details
Parameter	loadsol	Calleis
Price	Free	Free
Update frequency	Every 3 weeks — better	Every 24 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	10.0 — better	12.0
Further details — not scored
Size	242 MB	133 MB
Age rating	4+	4+
Developer	novel GmbH Elektrische Spezialgeräte	Proteor

In-app purchases

None

loadsol

No in-app purchases

None

Calleis

No in-app purchases

Questions

Is loadsol free?

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

Is Calleis free?

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

Do loadsol or Calleis have ads?

Neither loadsol nor Calleis shows ads.

Which is updated more often, loadsol or Calleis?

loadsol ships an update every 3 weeks, and Calleis every 24 months. Most recently, loadsol was updated on October 12, 2026 and Calleis on October 7, 2026.