# On3 AI vs Flexblocks

The clearest difference is rating: On3 AI at 5.0 against Flexblocks's 1.0. On3 AI also leads on in-app purchases (none vs 3) and ads (none vs shown). Flexblocks's advantage is update cadence (every 10 days vs every 5 weeks). On price, review sentiment, ratings volume and device support there is nothing between them.

Both are free to download. Flexblocks sells 3 in-app purchases, starting at $3.99 per month. On3 AI asks for nothing beyond the download.

On3 AI holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

On3 AI ships an update every 5 weeks, Flexblocks every 10 days. The most recent releases landed on August 18, 2026 and June 7, 2026 respectively.

## The numbers

| Metric | On3 AI | Flexblocks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/on3-ai/id1593743141/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/flexblocks-time-blocking/id1631938060/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 64 MB | 15 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [On3, LLC.](https://appshunter.io/developer/1540150272) | [Andrey Bukati](https://appshunter.io/developer/657064931) |

## What reviewers say

### On3 AI

[App page](https://appshunter.io/ios/app/on3-ai/id1593743141)

This app offers AI-powered technology for learning and capturing company processes. It extends beyond traditional online courses to provide mobile-ready field learning experiences.

**Highlights:** AI-based learning technology, Mobile-ready field learning, Capture company processes, Technology-based learning solutions

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

**In-app purchases:** none


### Flexblocks

[App page](https://appshunter.io/ios/app/flexblocks-time-blocking/id1631938060)

This app optimizes your day by automatically scheduling time blocks for tasks, helping you avoid procrastination and meet deadlines. It learns your best times to create a personalized schedule.

**Highlights:** Auto-scheduling for tasks, Optimizes daily schedule, Learns user's best times, Integrates with calendar, Helps meet deadlines

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $3.99 | per month |
| Special Offer | $11.49 | per year |
| Annual Plan | $46.99 | per year |


## Frequently asked questions

### Is On3 AI free?

On3 AI is free to download, with no in-app purchases.

### Is Flexblocks free?

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

### Which has better reviews, On3 AI or Flexblocks?

On3 AI is rated higher. On3 AI averages 5.0 out of 5 from 2 ratings, while Flexblocks averages 1.0 from 1 ratings.

### Do On3 AI or Flexblocks have ads?

Flexblocks shows ads; On3 AI does not.

### Which is updated more often, On3 AI or Flexblocks?

On3 AI ships an update every 5 weeks, and Flexblocks every 10 days. Most recently, On3 AI was updated on August 18, 2026 and Flexblocks on June 7, 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.*