# Chronogram vs Vesper AI

The clearest difference is in-app purchases: Chronogram at none against Vesper AI's 11. Chronogram also leads on review sentiment (100% vs 67%) and iOS requirement (15.6 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Vesper AI sells 11 in-app purchases, starting at $8.99 per month. Chronogram asks for nothing beyond the download.

Chronogram ships an update every 2 weeks, Vesper AI fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Chronogram | Vesper AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (17 ratings)](https://appshunter.io/ios/app/chronogram-create-moments/id1527207090/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | **Free** | Freemium |
| Size | 37 MB | 379 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Chronogram LLC (U.S.)](https://appshunter.io/developer/1527207092) | [Vesper AI LTD](https://appshunter.io/developer/1648825414) |

## What reviewers say

### Chronogram

[App page](https://appshunter.io/ios/app/chronogram-create-moments/id1527207090)

This app facilitates collaborative event planning and sharing for both individuals and organizations. It allows users to discover and connect with events, manage personal schedules, and helps organizations engage their audience by publishing events directly to followers' calendars.

**Highlights:** Collaborative event creation, Event sharing and discovery, Personal event scheduling, Organization event publishing, Follow organizations of interest, Minimize scheduling conflicts

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Vesper AI

[App page](https://appshunter.io/ios/app/vesper-ai/id6444138264)

This AI coach provides accountability through personalized phone calls to help you reflect, plan, and stay on track with your goals. It tracks your progress and offers weekly insights to boost motivation.

**Highlights:** AI-powered phone check-ins, Goal setting and tracking, Personalized weekly insights, Progress visualization, Accountability partner, Customizable schedule

**Features:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Access | $8.99 | per month |
| Vesper Pro Monthly (20% Off) | $12.49 | per month |
| Vesper AI PRO Monthly | $15.99 | per month |
| Vesper Pro Annual (60% Off) | $59.99 | per year |
| Annual Onboarding Offer | $74.99 | per year |
| Pro Access | $79.99 | per year |
| Vesper Pro Annual (20% Off) | $119.99 | per year |
| Vesper AI PRO Annual | $149.99 | per year |
| 100 Star Boost | $2.99 | one-time |
| 500 Star Boost | $11.99 | one-time |
| 1000 Star Boost | $19.99 | one-time |


## Frequently asked questions

### Is Chronogram free?

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

### Is Vesper AI free?

Vesper AI is free to download, with in-app purchases available.

### Do Chronogram or Vesper AI have ads?

Neither Chronogram nor Vesper AI shows ads.

### Which is updated more often, Chronogram or Vesper AI?

Chronogram ships an update every 2 weeks, and Vesper AI fortnightly. Most recently, Chronogram was updated on October 24, 2026 and Vesper AI on October 24, 2026.

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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.*