CallOne Softphone vs Petra
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CallOne Softphone
Read full descriptionHide full description
CallOne's begleitende Softphone-App zur CallOne-Plattform. Eine SIP-Softphone-App, die Push-Benachrichtigungen, HD-Voice und Video und vieles mehr unterstützt. Darüber hinaus bietet die CallOne-App - Kostenlose Anrufe zwischen App-Nutzern
Petra
Read full descriptionHide full description
Split your costs with friends and family
Screenshots
Verdict
CallOne Softphone and Petra are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.
| Parameter | CallOne Softphone | Petra |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 97 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | CallOne GmbH | Mathias Palm |
In-app purchases
CallOne Softphone
No in-app purchases
Petra
No in-app purchases
Questions
Is CallOne Softphone free?
Is Petra free?
Do CallOne Softphone or Petra have ads?
Which is updated more often, CallOne Softphone or Petra?
Other comparisons
