Costan vs WHAT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Costan
Learn everyday greetings in 14 languages to connect with people worldwide. This app promotes a peaceful, borderless world through simple, friendly communication.
- Learn greetings in 14 languages
- Promotes cross-cultural communication
- Focuses on everyday phrases
- Aims for a peaceful world
- Simple and friendly interface
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In Costan, you also Cosmopolitan from today! From "Time" and "Hello" First. Acquire the voice of the 14 languages of everyday greeting to dodge with a smile. A peaceful world without boundaries in heart!
WHAT
Track your daily activities and understand where your time goes. Easily log hours spent on studying, working out, or relaxing. Organize your life by creating custom subjects and recording your time spent on each.
- Create custom subjects
- Log time spent on subjects
- Record and review time logs
- Manage daily activities
- Analyze time allocation
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WHAT TIME Manage your time Check how much time you spent on studying, working out, or chilling out. Log how you spend your time and manage your life. Features - You can create subject easily. - Select a subject and specify a time. - Record the time, check the record.
Screenshots
Verdict
The clearest difference is review sentiment: Costan at 100% against WHAT's 50%. Costan also leads on update cadence (every 6 weeks vs every 3 months). On price, ads, in-app purchases and monetization model 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.
Costan ships an update every 6 weeks, WHAT every 3 months. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.
| Parameter | Costan | WHAT |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 6 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 14.1 — better |
| Further details — not scored | ||
| Size | 7 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Shinichi Aokawa | BINARY ROCKET |
Customer experience
Costan
WHAT
In-app purchases
Costan
No in-app purchases
WHAT
No in-app purchases
