Feed Your Elephant Knowledge vs sound
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Feed Your Elephant Knowledge
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Feed Your Elephant is the ultimate app for learning and retaining knowledge. The app learns what you know, what you don't and tailors the content accordingly in order to ensure you learn in the most effective manner possible. It employs proven techniques, based on well-established scientific understanding, to ensure the most effective learning possible. It's not a quiz app; it’s all about learning and remembering information. It is a microlearning app that uses s p a c i n g to deliver learning in highly efficient short bursts. Use the app little and often, and progress through a series of rankings to become a Grand Master of Knowledge.
sound
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Verdict
The clearest difference is update cadence: sound at weekly against Feed Your Elephant Knowledge's fortnightly. Feed Your Elephant Knowledge's advantage is iOS requirement (11.0 vs 14.0). On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Feed Your Elephant Knowledge ships an update fortnightly, sound weekly. The most recent releases landed on October 11, 2026 and September 30, 2026 respectively.
| Parameter | Feed Your Elephant Knowledge | sound |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 104 MB | 28 MB |
| Age rating | 12+ | 4+ |
| Developer | Feed Your Elephant | Inara Technologies |
In-app purchases
Feed Your Elephant Knowledge
No in-app purchases
sound
No in-app purchases
Questions
Is Feed Your Elephant Knowledge free?
Is sound free?
Do Feed Your Elephant Knowledge or sound have ads?
Which is updated more often, Feed Your Elephant Knowledge or sound?
Other comparisons
