Matricks Acro vs Interim
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Matricks Acro
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Welcome to the Matricks Acro app—your all-in-one hub for booking classes, privates, camps, clinics, and intensives with ease. Explore The Acro Shop for exclusive merchandise and drop-in punch passes, all in one place. Stay up to date with important booking details, special announcements, and upcoming events. We look forward to training with you!
Interim
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Interim shows your whole day as one band: hatched while you fast, filled once your eating window opens, with a red line marking now. One glance is enough — no arithmetic in your head. Eat in the window. Rest after. WHAT INTERIM DOES • A timer for the fast you are in, with the start and end of your window • Six protocols: 16:8, 18:6, 20:4, OMAD (23:1), 5:2, or a window of your own • A streak freeze for the days life gets in the way: your streak holds, without the day counting as a fasting day • History by week and month, with averages, longest fast and success rate • Streaks and marks that carry you along without nagging • Home Screen and Lock Screen widgets, plus a Live Activity in the Dynamic Island • Reminders when your window opens and when it is time to fast again • Add or correct entries — including yesterday's fast you forgot to log • Apple Health if you want it: Interim reads your weight and shows it next to your fasting times • Nine accent colours from brick to graphite: the band, badges, widgets and Live Activity take them on; the app icon only if you want it to • Light and dark, English and German — you switch the language inside the app WHAT INTERIM DOES NOT DO No account. No sign-up, no email, no password. No ads. Anywhere, ever. No subscription. Every feature is open, permanently. No calories. Interim counts hours, not calories — and does not judge you. No data for us. There is no server. Everything stays on your device. FOR BEGINNERS AND THE PRACTISED Starting out, take 16:8 — most of it is sleep. The explainer inside the app shows what happens in which hour and names the three rules that are enough. Already practised? Set your own window and track without the app talking back. If Interim helps you, you can buy me a coffee. One-off, voluntary, and it unlocks nothing — there is nothing to unlock. NOTE Interim is not a medical device and does not replace medical advice. During pregnancy, with eating disorders or diabetes medication, speak to a doctor first.
Screenshots
Verdict
The clearest difference is update cadence: Interim at every 2 weeks against Matricks Acro's every 2 months. Matricks Acro's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases 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.
Matricks Acro ships an update every 2 months, Interim every 2 weeks. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.
| Parameter | Matricks Acro | Interim |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 60 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | iClassPro Inc | Shiwani Goswami |
In-app purchases
Matricks Acro
No in-app purchases
Interim
No in-app purchases
Questions
Is Matricks Acro free?
Is Interim free?
Do Matricks Acro or Interim have ads?
Which is updated more often, Matricks Acro or Interim?
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