FIRE資産計算 vs 3s Kakeibo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FIRE資産計算
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積立・目標・FIRE(4%ルール)をサクッと試算。年利3/5/7%で比較して、将来資産のイメージを掴めます。
3s Kakeibo
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The number one reason expense trackers fail? You forget to log. 3s Kakeibo shrinks the distance to zero. Log an expense right from where you are — no app launch required: • Home Screen widget: tap a smart preset amount, done (interactive, iOS 17) • Lock Screen widget: see this month's total, tap to log • Action Button & Siri: just say "log with 3s Kakeibo" • Control Center (iOS 18): one swipe, one tap INSIDE THE APP, 3 SECONDS FLAT The keypad is ready the moment the app opens, your last category is pre-selected, and four preset amounts re-order themselves by how often you use them. Mis-tapped? Undo within 10 seconds. NO PAYWALL, NO TRIAL LIMITS • Unlimited history: view and edit every record you ever logged • Monthly reports: category breakdown, month-over-month, daily average • Up to 8 ledgers and custom categories (up to 24) • Full-history CSV export ADS, AND HOW TO REMOVE THEM A banner sits at the bottom of the History and Report tabs — never on the entry, editing or settings screens, and never while the keyboard is up. One optional one-time purchase, "Remove Ads", makes it disappear for good. It unlocks nothing else, because nothing else is locked. PRIVATE BY DESIGN Your records never leave your device. No accounts, no bank linking, and no analytics. The app works fully offline. Figures shown are informational, based on your own records — not financial advice.
Screenshots
Verdict
The clearest difference is in-app purchases: FIRE資産計算 at none against 3s Kakeibo's 1. FIRE資産計算 also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, update cadence and ads 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. 3s Kakeibo sells 1 one-off in-app purchase. FIRE資産計算 asks for nothing beyond the download.
FIRE資産計算 ships an update every 5 days, 3s Kakeibo every 3 days. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.
| Parameter | FIRE資産計算 | 3s Kakeibo |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days | Every 3 days — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 31 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroto Ouchi | 丽佳 施 |
In-app purchases
FIRE資産計算
No in-app purchases
3s Kakeibo
- Remove Ads$0.99









