# Stratum 9 vs OnTimer

The clearest difference is in-app purchases: Stratum 9 at none against OnTimer's 2. Stratum 9 also leads on rating (5.0 vs 4.6) and iOS requirement (13.4 vs 18.0). OnTimer's advantage is update cadence (every 6 days vs every 5 weeks) and ratings volume (20 vs 2). On price, ads and device support there is nothing between them.

Both are free to download. OnTimer sells 2 in-app purchases, starting at $4.99 per month. Stratum 9 asks for nothing beyond the download.

Stratum 9 holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: OnTimer has 20 ratings behind it against 2, so its average is the more settled of the two.

Stratum 9 ships an update every 5 weeks, OnTimer every 6 days. The most recent releases landed on June 5, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Stratum 9 | OnTimer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stratum-9/id6478380143/reviews)** | [4.6 (20 ratings)](https://appshunter.io/ios/app/ontimer-never-be-late/id6755317601/reviews) |
| Number of ratings | 2 | **20** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 6 days** |
| Monetization | **Free** | Freemium |
| Size | 35 MB | 26 MB |
| Requires iOS | **13.4** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [9th Stratum Publishing LLC](https://appshunter.io/developer/1732644918) | [Ethan Garr](https://appshunter.io/developer/1853105438) |

## What reviewers say

### Stratum 9

[App page](https://appshunter.io/ios/app/stratum-9/id6478380143)

This app provides a science-backed framework for achieving and sustaining elite performance. It offers self-assessment tools, personalized development plans, practical strategies, and goal-setting tools to help users improve across all areas of life.

**Highlights:** Self-Assessment Tools, Customized Skill Development Plans, Performance Library (TacApps), DOIT Goal Strategy, Daily Challenges & Progress Tracking, Community and Peer Support

**Features:** macOS Compatibility

**In-app purchases:** none


### OnTimer

[App page](https://appshunter.io/ios/app/ontimer-never-be-late/id6755317601)

This app automatically creates persistent alarms for all your calendar events, ensuring you never miss a meeting. It also provides departure time alerts for in-person meetings based on real-time traffic conditions.

**Highlights:** Automatic calendar event alarms, Persistent, non-dismissible notifications, Time to leave alerts with traffic, Customizable transportation modes, Recurring event controls, Do Not Disturb integration

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OnTimer Pro (Monthly) | $4.99 | per month |
| OnTimer Pro (Yearly) | $49.99 | per year |


## Frequently asked questions

### Is Stratum 9 free?

Stratum 9 is free to download, with no in-app purchases.

### Is OnTimer free?

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

### Which has better reviews, Stratum 9 or OnTimer?

Stratum 9 is rated higher. Stratum 9 averages 5.0 out of 5 from 2 ratings, while OnTimer averages 4.6 from 20 ratings.

### Do Stratum 9 or OnTimer have ads?

Neither Stratum 9 nor OnTimer shows ads.

### Which is updated more often, Stratum 9 or OnTimer?

Stratum 9 ships an update every 5 weeks, and OnTimer every 6 days. Most recently, Stratum 9 was updated on June 5, 2026 and OnTimer on September 23, 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.*