SuppleManager vs When Again?
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SuppleManager
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Never run out of supplements again. Do you take supplements daily but sometimes forget to restock? Supplement Manager automatically calculates remaining days and notifies you before you run out. ◆ Key Features Auto-Calculate Remaining Days Enter the quantity and daily dosage - the app calculates the rest. Track multiple products and see your total supply at a glance. Smart Notifications Choose from remaining days, stock percentage, or item count. Set alerts like "Notify me when 7 days remain." Cost Tracking View supplement costs by custom periods. Visualize monthly and yearly spending with charts. Multi-Product Management Register each purchase separately for the same supplement. Track start dates, prices, and purchase URLs. Beautiful Design Dark mode support with 5 theme options. Simple and intuitive interface. ◆ Perfect For ・Taking multiple supplements daily ・Avoiding stockouts ・Tracking supplement expenses ・Maintaining healthy habits ◆ Privacy First ・All data stored locally on device ・Works completely offline ・No account required Start managing your supplements smarter today!
When Again?
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"When did I last do that?" Bike oil changes, haircuts, salon visits, AC cleaning, doctor appointments, pet care — things you do again and again, but once enough time passes, you can't remember when you last did them. When Again? clears up that little everyday question with a single tap. Just log the date. The app automatically counts the days since you last did it, learns your average interval from your own records, and gives you a heads-up when it's about time. ■ Who it's for ・People who forget when their bike or car was last serviced ・Anyone managing regular salon, hair, or nail appointments ・People tracking doctor visits, medication, or health habits ・Anyone who wants to stop thinking "wow, it's already been a while" ・People who want to start right away — no account needed ■ Key features ◎ See the days at a glance Your items line up on the home screen, each with a badge showing how many days since you last did it. What needs doing now is obvious. ◎ "About time" reminders, automatically The app learns your average interval from your records, gathers the items coming due at the top of the home screen, and reminds you with notifications too. ◎ Track anything Use the preset categories or add your own with custom icons and colors. From bike maintenance to beauty to health — manage it all in one app. ◎ Photos, tags, amounts, and notes It's more than a date log. Add up to 5 photos, tags, the amount you spent, and notes to each record — so you can look back on what state it was in last time and how much it cost. ◎ Detailed history and stats The detail screen shows stats like "since last time," "average interval," and totals, plus a month-by-month timeline. ◎ Search Search across notes, tags, and item names to find past records instantly. ◎ Easy backup Save and restore all your records to a file (photos included). CSV export is also supported. ◎ Dark mode Choose system, light, or dark. ■ Privacy first All your records are stored only on your device. No account, no login. We never send your records to a server — so you can start with peace of mind. ■ Pricing The core features are free. Some premium features are available via a one-time in-app purchase. Leave your everyday "when was that again?" to When Again?
Screenshots
Verdict
The clearest difference is update cadence: When Again? at daily against SuppleManager's weekly. When Again? also leads on iOS requirement (16.4 vs 18.6). 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. SuppleManager sells 1 one-off in-app purchase and When Again? sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
SuppleManager ships an update weekly, When Again? daily. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.
| Parameter | SuppleManager | When Again? |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Daily — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 18.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 7 MB | 59 MB |
| Age rating | 17+ | 4+ |
| Developer | Masatomo Murata | Masamune Hiroiwa |
In-app purchases
SuppleManager
- Remove Ads$4.99
When Again?
- プレミアム(買い切り)$4.99









