Comparison

Certis Phone vs IPATS Client

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

Head to head

About

Certis Phone

Features

Read full description

This is a mobile telephony project by Certis powered by Nautilus. This application is secure telephone communication, running within a user access policy.

About

IPATS Client

Features

Read full description

IPATS Client is a calling application that allows you to make and receive calls using the SIP protocol. With a maximum of two lines, users can easily switch between incoming calls and make outgoing calls. Unfortunately, simultaneous calls with multiple people are not possible at this time. The app features a built-in contact list, allowing users to quickly call their saved contacts. Please note that the contact list is directly linked to the phone's contact list, so users cannot add or delete contacts directly within the app. Overall, IPATS Client is a user-friendly app that simplifies calling with its straightforward interface and SIP protocol support.

Screenshots

Certis Phone4 screens

IPATS Client4 screens

Verdict

The call

The clearest difference is update cadence: IPATS Client at every 2 weeks against Certis Phone's every 2 months. 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

Certis Phone ships an update every 2 months, IPATS Client every 2 weeks. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.

Scorecard1 real difference · 5 level

Certis Phone versus IPATS Client: the parameters behind the verdict, then further details
Parameter	Certis Phone	IPATS Client
Price	Free	Free
Update frequency	Every 2 months	Every 2 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	14.0	13.0 — better
Further details — not scored
Size	24 MB	46 MB
Age rating	4+	4+
Developer	Nautilus SIP Pte Ltd	ITSPARK, LLC

In-app purchases

None

Certis Phone

No in-app purchases

None

IPATS Client

No in-app purchases

Questions

Is Certis Phone free?

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

Is IPATS Client free?

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

Do Certis Phone or IPATS Client have ads?

Neither Certis Phone nor IPATS Client shows ads.

Which is updated more often, Certis Phone or IPATS Client?

Certis Phone ships an update every 2 months, and IPATS Client every 2 weeks. Most recently, Certis Phone was updated on October 20, 2026 and IPATS Client on October 25, 2026.