# KnowSelf vs OgdenSpine

The clearest difference is ads: OgdenSpine at none against KnowSelf's shown. KnowSelf's advantage is ratings volume (37 vs 1) and device support (3 vs 1). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. KnowSelf sells 1 one-off in-app purchase and OgdenSpine sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for KnowSelf against 5.0 for OgdenSpine. That said, the two scores are not equally well evidenced: KnowSelf has 37 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 58% of KnowSelf's written reviews are positive against 63% of OgdenSpine's.

KnowSelf ships an update monthly, OgdenSpine fortnightly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | KnowSelf | OgdenSpine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (37 ratings)](https://appshunter.io/ios/app/knowself-personality-and-mood/id1663497226/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ogdenspine/id6772943882/reviews)** |
| Number of ratings | **37** | 1 |
| Positive reviews | 57.9% of reviews | **62.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 87 MB | 12 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Baofeng County Jixu Education Information Consulting Co., Ltd.](https://appshunter.io/developer/1298441489) | [Naihe Hu](https://appshunter.io/developer/564180065) |

## What reviewers say

### KnowSelf

[App page](https://appshunter.io/ios/app/knowself-personality-and-mood/id1663497226)

Discover your unique strengths and enhance self-awareness with a professional psychological assessment tool. This app utilizes a refined question bank based on established psychological theories to help you understand your personality type.

**Highlights:** Professional psychological assessment, Refined 6-option question bank, Enhance self-awareness, Discover unique strengths, Based on MBTI theory, Career and love match insights

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MBTI Report Pro Version | $1.99 | one-time |


### OgdenSpine

[App page](https://appshunter.io/ios/app/ogdenspine/id6772943882)

Master English with a core vocabulary of 850 essential words. This app offers multilingual support, daily word reviews, sentence practice, and writing tools to build clear communication skills.

**Highlights:** 850 core English words, Multilingual support, Daily word review, Sentence practice, Writing analysis, Progress tracking

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MonthlyPro | $1.99 | per month |
| YearlyPro | $19.99 | per year |
| Life Time Pro | Free | one-time |
| Capture Unlock | $5.99 | one-time |


## Frequently asked questions

### Is KnowSelf free?

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

### Is OgdenSpine free?

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

### Which has better reviews, KnowSelf or OgdenSpine?

OgdenSpine is rated higher. KnowSelf averages 4.9 out of 5 from 37 ratings, while OgdenSpine averages 5.0 from 1 ratings.

### Do KnowSelf or OgdenSpine have ads?

KnowSelf shows ads; OgdenSpine does not.

### Which is updated more often, KnowSelf or OgdenSpine?

KnowSelf ships an update monthly, and OgdenSpine fortnightly. Most recently, KnowSelf was updated on October 30, 2026 and OgdenSpine on October 28, 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.*