Quis sum vs Echo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Quis sum
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Deze app is je professionele knapzak. Je verzamelt hierin alle inspiratie, voorbeelden en ideeën die jou verder kunnen helpen in je professionele ontwikkeling.
Echo
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Echo makes learning visible. The app helps people reflect on their development through short, structured reflections. Coaches, mentors, or peers can view entries and discuss them during in-person sessions, making growth visible over time. Developed by Krom, in collaboration with Tom Adams — an educational scientist specializing in workplace learning.
Screenshots
Verdict
Quis sum and Echo are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Quis sum ships an update every 3 weeks, Echo every 2 weeks. The most recent releases landed on September 26, 2026 and October 2, 2026 respectively.
| Parameter | Quis sum | Echo |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 45 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Uitgeverij OMJS B.V. | Krom (NL) |
In-app purchases
Quis sum
No in-app purchases
Echo
No in-app purchases
