Comparison

KnowSelf vs OgdenSpine

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

Head to head
About

KnowSelf

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
Read full description

Get to know your personality and make sense of your everyday moods. KnowSelf brings together personality and well-being assessments, a sticker mood journal, and simple ways to unwind. Discover different sides of yourself and take time to notice how you feel. Discover more about yourself Explore MBTI, the Big Five, career interests, relationships, and more. Learn about your preferences, how you think, and how you relate to others, with clear reports that help you understand your results. Use emotional well-being assessments to check in with how you've been feeling lately. Your self-portrait, ready to share Bring your personality, interests, and thinking styles together in a personal profile card. Save it, share it with friends, and discover what you have in common and what makes you different. Capture your mood with stickers Choose a sticker that fits how you feel, add a few words, or keep a photo of the moment. From joy and calm to feeling hurt or worn out, make room for the subtler shades of your emotions. Revisit moments on your calendar and explore weekly, monthly, and yearly mood patterns. Find the words and take a breather Not sure how you feel? Use the Emotion finder to discover words that feel right. Slow down with a one-minute breathing exercise, or settle into white noise and scenic soundscapes when you want to focus, rest, or unwind. A little inspiration, every day Discover thoughtful quotes paired with beautiful works of art. Save or share a card that speaks to you, keep your favorites, and revisit past cards. Choose whether to show daily inspiration on your home screen. Assessments are for self-reflection and information. They do not replace a professional medical diagnosis. KnowSelf Pro Choose an annual auto-renewable subscription or a one-time lifetime purchase to unlock Pro features and remove ads. Payment is charged to your Apple Account at confirmation. Annual subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel your subscription in your App Store account settings. Eligible purchases from earlier versions can be restored in the app. Privacy Policy: https://psychang.com/knowself/privacy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

OgdenSpine

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
Read full description

Ogden's Spine helps you build English from the 850 core words of Ogden Basic English. Instead of chasing endless vocabulary lists, the app focuses on a compact set of high-value words that support clear reading, writing, and sentence building. Version 2.0 adds full multilingual support for English, Simplified Chinese, Traditional Chinese, Japanese, Korean, French, and Spanish learners. You can study word meanings in your preferred language, review daily words, explore the Word Atlas, practice sentence lessons, and write with a built-in 850-word ratio checker. Key features: - Daily word sets for steady review - Word Atlas for the full 850-word system - Sentence Club with structured practice scenes - Play modes for opposite words and sentence sense - Writing Sandbox with core-word analysis - Progress tracking and language preferences Build a stronger English spine with simple words, clear practice, and multilingual support. Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

KnowSelf4 screens
OgdenSpine4 screens

Verdict

The call

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.

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

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard4 real differences · 6 level
KnowSelf versus OgdenSpine: the parameters behind the verdict, then further details
ParameterKnowSelfOgdenSpine
PriceFreeFree
Rating4.9 (37 ratings)5.0 (1 ratings) — better
Positive reviews57.9% of reviews62.5% of reviews — better
Number of ratings37 — better1
Update frequencyMonthlyFortnightly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better18.6
Further details — not scored
Size87 MB12 MB
Age rating12+4+
DeveloperBaofeng County Jixu Education Information Consulting Co., Ltd.Naihe Hu

Customer experience

KnowSelf

All ratings37 ratings
Positive97.3%
Neutral2.7%
Negative0.0%
Written reviews19 reviews
Positive57.9%
Neutral5.3%
Negative36.8%

OgdenSpine

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive62.5%
Neutral12.5%
Negative25.0%

In-app purchases

1 purchases

KnowSelf

One-time1
  • MBTI Report Pro Version$1.99
4 purchases

OgdenSpine

Subscriptions2
  • MonthlyPro$1.991 Month
  • YearlyPro$19.991 Year
One-time2
  • Life Time ProFree
  • Capture Unlock$5.99

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.

Other comparisons