Moji Kello vs ÄssäTreeni
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Moji Kello
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Moji kello on opetuspeli lapsille jotka opettelevat kellonaikoja. Helppo ja tehokas pedagogiikka opettavat kellon käyttöä apunaan innostavat grafiikat ja äänet. Applikaation on yksinkertainen ja tarjoaa useita eri vaihtoehtoja ja vaikeustasoja. Lapsi voi: kuulla kellonajat ääneenluettuna opetella kellonkäyttöä vetämällä viisarit oikeaan aikaan ja saada palautetta edistyä eri pelitasoille opiskella monipuolisesti miellyttävän grafiikan ja animaation avoin Pelistä löytyy useita erikielisiä versioita joten kelloa voi myös opetella vierailla kielillä.
ÄssäTreeni
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Is your child still mispronouncing the S sound? ÄssäTreeni takes them step by step to a smooth S sound using methods developed by Finnish speech therapists. The sounds are almost invariably learned through regular home practice, and ÄssäTreeni is an effective tool for this. The application has been developed in collaboration with Finnish speech therapists. The application contains versatile tasks for practicing pronunciation through various gamified exercises, following the structure used in speech therapy for learning the /s/ sound. The application also includes comprehensive instructional videos from a speech therapist. ÄssäTreeni is suitable for children of all ages. However, we recommend that an adult and child use ÄssäTreeni together, so that the adult can support the child when necessary and at the same time spend quality time learning together.
Screenshots
Verdict
The clearest difference is price: ÄssäTreeni at Free against Moji Kello's $1.99. ÄssäTreeni also leads on update cadence (every 2 months vs every 42 months). Moji Kello's advantage is iOS requirement (11.0 vs 15.0). On 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
ÄssäTreeni is free to download; Moji Kello costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Moji Kello ships an update every 42 months, ÄssäTreeni every 2 months. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.
| Parameter | Moji Kello | ÄssäTreeni |
|---|---|---|
| Price | $1.99 | Free — better |
| Update frequency | Every 42 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 56 MB | 162 MB |
| Age rating | 4+ | 4+ |
| Developer | Extransit | ArraTreeni Oy |
In-app purchases
Moji Kello
No in-app purchases
ÄssäTreeni
No in-app purchases







