Comparison

PI vs CAL Innov

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

Head to head
About

PI

Features
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PI-Support is a mobile platform designed by senior Principal Investigators (PIs) to accomplish the following tasks: * save PIs and their site teams time and effort, * support Junior Investigators and trainees, * increase patient engagement and retention, * limit screen failures, * broaden study awareness, * integrate local HCPs and * improve data quality. It largely achieves these goals by empowering PIs and maximizing their involvement. Specifically, it enables PIs to select and prioritize which study criteria they want displayed on their colleagues’ cell phones or mobile devices (making pre-screening in busy office clinics and/or hospital ward rounds much easier for all concerned); it extracts from study protocols the answers to common patient queries (obviating the need for PIs and Sub-Is to locate and review extensive study protocols); it helps to ensure the right patients are enrolled into the right trial by offering side-by-side comparisons of each competing trial; and increases study awareness by enabling site teams to share selected study information with their community-based referral networks. Finally, intra- and inter-site bulletin boards allow PIs and SCs to discuss their local and study-wide concerns/solutions with other site PIs and SCs, CRAs and study sponsors. Overall, PI-Support can be used as a stand-alone tool or seamlessly integrated into existing CTMS to provide broad spectrum, site support.

About

CAL Innov

Features
Read full description

With CAL-Innov, doctors can identify clinical trials suitable for their patients or according to their specialties and search for trials for many diseases as well as suggest patients.

Screenshots

PI4 screens
CAL Innov4 screens

Verdict

The call

PI and CAL Innov are too close to call on the numbers: across 6 compared parameters β€” price, update cadence, ads and in-app purchases among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

ScorecardNo meaningful differences
PI versus CAL Innov: the parameters behind the verdict, then further details
ParameterPICAL Innov
PriceFreeFree
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115 β€” better
Further details β€” not scored
Size14 MB30 MB
Age rating17+17+
DeveloperRefuah Solutions LTDCentre Antoine LAcassagne

In-app purchases

None

PI

No in-app purchases

None

CAL Innov

No in-app purchases

Questions

Is PI free?
PI is free to download, with no in-app purchases.
Is CAL Innov free?
CAL Innov is free to download, with no in-app purchases.
Do PI or CAL Innov have ads?
Neither PI nor CAL Innov shows ads.
Which is updated more often, PI or CAL Innov?
PI ships an update every 3 weeks, and CAL Innov every 3 weeks. Most recently, PI was updated on October 4, 2026 and CAL Innov on October 7, 2026.

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