Ratios vs Tap Lottery
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ratios
This application helps home baristas calculate precise coffee brewing ratios. Easily determine the exact weight of coffee beans and water needed for your desired brew strength. All values are instantly editable to see how adjustments impact your final cup.
- Calculate coffee bean and water weights
- Adjustable brew strength
- Instant value updates
- Free and open source
- Supports various brew amounts
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Ratios is a free and open source calculator for home brewed coffee. Quickly and easily enter the total amount of coffee you want to make and Ratios will calculate the weight of beans and amount of water needed based on your desired strength. All the information is editable and updates instantly so you can see how different values affect your overall brew.
Tap Lottery
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One person will be selected by drawing lots from multiple people. Touch and hold the screen with multiple people. The lottery results will be displayed after the countdown ends. You can participate in the lottery during the countdown.
Screenshots
Verdict
The clearest difference is in-app purchases: Ratios at none against Tap Lottery's 1. Ratios also leads on iOS requirement (10.3 vs 15.6). Tap Lottery's advantage is update cadence (monthly vs every 5 months). On price, 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. Tap Lottery sells 1 one-off in-app purchase. Ratios asks for nothing beyond the download.
Ratios ships an update every 5 months, Tap Lottery monthly. The most recent releases landed on October 10, 2026 and October 20, 2026 respectively.
| Parameter | Ratios | Tap Lottery |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (79 ratings) — better | — |
| Positive reviews | 71.4% of reviews | — |
| Number of ratings | 79 — better | — |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.3 — better | 15.6 |
| Further details — not scored | ||
| Size | 17 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Brushed Type Ltd | akira ohmachi |
In-app purchases
Ratios
No in-app purchases
Tap Lottery
- Remove Ads$1.99
