20 vs Soliday
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
20
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20-20-20-eyecare 幫助你養成 20-20-20 護眼習慣：每工作 20 分鐘，望向遠處 20 秒，讓眼睛休息一下。 App 會帶你完成四個階段的護眼循環，配合清晰的倒數介面，讓你更容易在日常工作、學習或使用螢幕時安排短暫休息。 功能特色： - 四階段 20-20-20 護眼循環 - 支援 iPhone 和 Apple Watch - 支援鎖定畫面 Live Activity - 支援 Dynamic Island 倒數顯示 - 可開始、暫停、重設和確認下一階段 - 提供正常模式和測試用 Debug 模式 - 支援英文和繁體中文介面
Soliday
This app simplifies strength training with a focus on one daily lift. It guides you through five reps, automatically adjusts weight, and tracks your progress, making it easy to get stronger without decision fatigue.
- One lift per day
- Automatic weight progression
- Five unilateral dumbbell movements
- Progress chart and history
- Flexible training plans
- No account or ads
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Soliday is strength training stripped to what works: one lift a day, five reps, and the app handles the rest. Open it, do one movement in about twenty minutes, and get on with your life. Soliday tells you exactly what to lift and how much, records every set, and works out your next weight automatically — so you just show up and get stronger. • One lift a day, five clean reps — no decision fatigue • Automatic progression: it adds weight when you're ready, backs off when you're not • Five unilateral dumbbell movements that cover the whole body • Progress chart, estimated 1RM, and full training history • Plans for training daily, three days a week, or with a barbell • Free. No account, no ads, works at home. Get a little stronger, one day at a time.
Screenshots
Verdict
The clearest difference is update cadence: 20 at every 2 days against Soliday's weekly. 20 also leads on device support (4 vs 2). Soliday's advantage is iOS requirement (15.1 vs 26.0). 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.
20 ships an update every 2 days, Soliday weekly. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.
| Parameter | 20 | Soliday |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (27 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 27 — better |
| Update frequency | Every 2 days — better | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, Mac, Apple Watch — better | iPhone, iPod |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 15 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Yan Yin Yu | CHUN-YANG CHEN |
In-app purchases
20
No in-app purchases
Soliday
No in-app purchases
