yen vs Simple Expense Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
yen
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Most budget apps want to log into your bank account. yen-yen doesn't. You type what you spent, hit save, and get on with your day. That's the whole interaction. It's built around kakeibo (家計簿), the Japanese household-ledger habit that's been around for over a hundred years. Every entry asks four small questions: · Did I need it? · Did I just want it? · Does it feed something I love? · Did I see this coming? Sit with the answers for a minute. That minute is the point. FREE, FOREVER Multi-account ledger across cash, banks, cards, and loans. Multi-currency with historical FX so a coffee in Tokyo last March still reads in JPY but totals correctly in your home currency. Budgets and bill reminders. Kakeibo classification on every entry. CSV / JSON import + export. Photo attachments for receipts. Account deletion you run yourself. No ads. We don't sell your data. We never ask for your bank password. OPTIONAL ADD-ONS · Sharing a household ledger with a partner or roommate. · AI-assisted statement parsing — you paste the lines, you approve every row, nothing auto-saves to your ledger. · Longer audit retention. · Priority support. WHAT YEN-YEN WILL NEVER DO · Connect to your bank. · Auto-write AI guesses into your ledger. · Send push notifications about your spending habits. · Show ads. ACCOUNT DELETION In the app: Settings → Account → Delete. You get 14 days to undo it, after which the data is hard-deleted within 24 hours. The Data Safety form lists the same web flow at https://kensaur.us/yen-yen/account/delete. HOSTING + PRIVACY Hosted on Supabase, encrypted in transit and at rest. Privacy policy: https://kensaur.us/yen-yen/privacy Terms: https://kensaur.us/yen-yen/terms Made by kensaurus LLC in Tokyo. Questions or bug reports go to yenyen@kensaur.us — a real human reads them.
Simple Expense Tracker
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Simple Expense Tracker is an easy budget and spending app for everyday money management. Record daily expenses, add planned payments, and check your remaining budget at a glance. The app automatically shows your actual spending, planned total, daily budget, and monthly pace so you can avoid overspending without complicated bookkeeping.
Screenshots
Verdict
The clearest difference is ads: yen at none against Simple Expense Tracker's shown. yen also leads on update cadence (every 2 days vs every 6 days). Simple Expense Tracker's advantage is iOS requirement (13.0 vs 15.1). On price, 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. Neither carries in-app purchases, so what you see is what you pay.
yen ships an update every 2 days, Simple Expense Tracker every 6 days. The most recent releases landed on September 28, 2026 and September 19, 2026 respectively.
| Parameter | yen | Simple Expense Tracker |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days — better | Every 6 days |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 74 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | kensaurus LLC | YUKI HIGASHI |
In-app purchases
yen
No in-app purchases
Simple Expense Tracker
No in-app purchases









