# PingID vs CalStack

The clearest difference is price: PingID at Free against CalStack's $9.99. PingID also leads on chart position (#35 vs #190) and iOS requirement (16.0 vs 18.0). CalStack's advantage is update cadence (every 5 days vs every 6 weeks). On ads, in-app purchases and device support there is nothing between them.

PingID is free to download; CalStack costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PingID ships an update every 6 weeks, CalStack every 5 days. The most recent releases landed on October 7, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | PingID | CalStack |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[2.2 (367 ratings)](https://appshunter.io/ios/app/pingid/id891247102/reviews)** | — |
| Number of ratings | **367** | — |
| Positive reviews | 19.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Free | — |
| Best chart rank | **#35** | #190 |
| Size | 70 MB | 11 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Ping Identity Corporation](https://appshunter.io/developer/799934473) | [Pick Two Productions Inc](https://appshunter.io/developer/1860419697) |

## What reviewers say

### PingID

[App page](https://appshunter.io/ios/app/pingid/id891247102)

**Currently charting:** #35 Top Free · Productivity (US App Store)

This app enhances login security and verifies user identities. It also functions as a digital wallet for managing digital identities securely. Administrators benefit from mission-critical security features, and offline support is available.

**Highlights:** User identity verification, Digital wallet for identity management, Mission-critical security for administrators, Offline support, Seamless integration with PingOne ecosystem

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 🔒 Secure login process
- 👍 Convenient with Apple Watch
- 🚀 Fast authentication

**What reviewers complain about**

- 🐛 Unreliable, often doesn't work
- 🤯 Frustrating and confusing to set up
- 🤖 Poor user interface and UX
- 🔒 Overly intrusive permissions
- 🔋 Drains battery quickly

**Reported bugs**

- Incorrectly identifies devices as jailbroken
- Fails to send push notifications consistently
- Camera issues when trying to scan QR codes
- Compatibility problems with newer iOS versions

**Requested features**

- Ability to add new devices easily
- Landscape mode support for iPad
- Customizable alert sounds
- Faster authentication process


### CalStack

[App page](https://appshunter.io/ios/app/calstack/id6789672345)

**Currently charting:** #190 Top Paid · Productivity (US App Store)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PingID free?

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

### Is CalStack free?

CalStack costs $9.99, with no in-app purchases.

### Do PingID or CalStack have ads?

Neither PingID nor CalStack shows ads.

### Which is updated more often, PingID or CalStack?

PingID ships an update every 6 weeks, and CalStack every 5 days. Most recently, PingID was updated on October 7, 2026 and CalStack on September 23, 2026.

### Which is more popular, PingID or CalStack?

PingID currently peaks at #35 in the App Store charts, and CalStack at #190. Chart position reflects recent download velocity rather than total install base.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*