MOTIONrelax vs Calla
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MOTIONrelax
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If you own a LOGICDATA Silver Series Adjustable, we know that you value comfort, ease of use, and the joy of a perfect night’s sleep. That’s why we’ve developed our MOTIONrelax app, an app that provides total control over your Bed Frame, directly from your smart device.
Calla
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Most period apps were built for adults trying to get pregnant. Calla wasn't. It's built for teens who just want to understand what's happening in their body - without the noise, the upsells, or the ovulation countdowns. Your data lives on your phone. No accounts required. No ads. No third parties, no data brokers, no advertisers. Optional parent share, if you want it. Privacy-first. Always. All your data stays on your phone. No accounts. No cloud. No ads. No data selling. Period. Built for how your body actually works Irregular cycles? That's normal, especially when you're starting out. Calla doesn't just assume a 28-day cycle - it learns your patterns and gives you predictions that actually make sense for your body. Track what matters to you Log your period, flow level, mood, energy, cramps, sleep, skin, focus, appetite, and activity. See how your cycle connects to how you feel day to day. Understand your cycle Get gentle, age-appropriate insights about each phase of your cycle - what's happening in your body and what to expect. Prep-day reminders Get a heads-up before your period is predicted to start so you're never caught off guard. Parent Mode Share a simple wellness signal with a parent or guardian - "all good" or "heads up" - without revealing any cycle details. Communication on your terms. Calla is not a medical app. It does not diagnose, treat, or prevent any medical condition. If you have health concerns, talk to a doctor.
Screenshots
Verdict
The clearest difference is iOS requirement: MOTIONrelax at 12.0 against Calla's 15.1. 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.
| Parameter | MOTIONrelax | Calla |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (4 ratings) — better |
| Number of ratings | — | 4 — better |
| Update frequency | Every 12 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 17 MB | 33 MB |
| Age rating | 4+ | 12+ |
| Developer | LOGICDATA Electronic & Software Entwicklungs GmbH | Roxana Heitz |
In-app purchases
MOTIONrelax
No in-app purchases
Calla
No in-app purchases









