Coffee Rings vs Grindhog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Coffee Rings
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Perfect espresso is not a coincidence. With Coffee Rings, you can precisely document, analyze and improve your espresso shots step by step - for consistent, great results. Whether you prefer to experiment yourself or let the app guide you - Coffee Rings combines proven barista knowledge with optional AI analysis for a better understanding of your preparation. Functions: • Create, save and search recipes • Record dose, output, temperature and taste • Offline recommendations based on real barista logic • Optional AI analyses for additional insights • Espresso Tutor as a learning aid for reproducible results • Works offline - without registration, without advertising Whether an amateur or a passionate barista - Coffee Rings helps you understand the language of your espresso and make every cup a little better.
Grindhog
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Never spend 4-5 shots dialing in a new bag again. Grindhog uses knowledge graphs to learn from your equipment and beans, instantly recommending the perfect grind settings - and it taps into the power of the dial-in community!
Screenshots
Verdict
The clearest difference is in-app purchases: Grindhog at none against Coffee Rings's 3. Grindhog also leads on iOS requirement (15.1 vs 26.0). On price, update cadence, ads 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. Coffee Rings sells 3 one-off in-app purchases. Grindhog asks for nothing beyond the download.
Coffee Rings ships an update weekly, Grindhog every 6 days. The most recent releases landed on October 28, 2026 and November 5, 2026 respectively.
| Parameter | Coffee Rings | Grindhog |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 11 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | MICHAEL KARL KNOP | Johannes Hermann Hoffart |
In-app purchases
Coffee Rings
- Single Espresso Tip$1.99
- Tip - Double Espresso$2.99
- Big Support Tip$3.99
Grindhog
No in-app purchases









