Comparison

PingID vs CalStack

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

Head to head
About

PingID

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
Currently charting
Read full description

The PingID® mobile app is a user-friendly solution designed to enhance login security and verify end users’ identities. Additionally, it serves as a digital wallet, enabling secure storage and management of digital identities. The app offers mission-critical security features for administrators and provides offline support for scenarios where a device lacks signal. The PingID mobile app integrates seamlessly with PingOne®, PingFederate®, PingOne Verify®, and PingOne Credentials®. Before installation, please ensure your organization has licensed PingID, PingOne Verify, or PingOne Credentials. For more information, contact your administrator or Ping Identity support.

About

CalStack

Features
Read full description

CalStack is a personal command center for your calendar, email, tasks, notes, contacts, and AI assistant. Built for people who live across meetings, travel, family schedules, projects, and inboxes, CalStack brings the day into one focused view instead of scattering it across apps. See your day, upcoming week, pinned events, meetings, reminders, and time zones in a single dashboard. Use Start Day, Check In, and Wind Down rituals to turn your calendar, email, tasks, and notes into practical daily context. CalStack also includes an AI chatbot that can work with your local app context, including calendar events, synced notes, processed email, contacts, and saved preferences. You can connect supported AI providers or local model servers depending on your setup. Key features: • Unified calendar dashboard • Day, week, month, quarter, year, and list calendar views • Pinned and starred calendar events • Time zone dashboard with time scrubber • AI-assisted Start Day, Check In, and Wind Down workflows • Email sync and searchable email context • Brain notes and memory layer • Contact tracking • Meeting and video link support • Local model support for privacy-focused workflows • iCloud sync for supported app data • Native iPhone, iPad, and Mac layouts CalStack is designed to help you understand what matters today, prepare for what is coming next, and keep useful context close without turning your day into another inbox.

Screenshots

PingID4 screens
CalStack4 screens

Verdict

The call

The clearest difference is price: PingID at Free against CalStack's $9.99. PingID also leads on chart position (#32 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.

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

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

UpkeepUpdate frequency

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.

Scorecard4 real differences · 7 level
PingID versus CalStack: the parameters behind the verdict, then further details
ParameterPingIDCalStack
PriceFree — better$9.99
Rating2.2 (367 ratings) — better—
Positive reviews19.8% of reviews—
Number of ratings367 — better—
Update frequencyEvery 6 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
Best chart rank#32 — better#190
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Mac
Requires iOS16.0 — better18.0
Further details — not scored
Size70 MB11 MB
Age rating4+4+
DeveloperPing Identity CorporationPick Two Productions Inc

Bugs and requests

PingID

Reported bugs

4 issues
  • 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

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

CalStack

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

PingID

No in-app purchases

None

CalStack

No in-app purchases

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

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