PennyPod - Family Savings

PennyPod turns any iPhone or iPad into a family bank. Track allowances, run real compound interest, and teach your kid what patience actually earns.

A piggy bank doesn't teach your kid anything about money. A real savings account has minimums, disclosures, and paperwork no ten-year-old will ever read. Somewhere between "stuff cash in a jar" and "open a UTMA" there should be a simple tool that treats the money seriously and makes compound interest visible. PennyPod is that tool.

PennyPod is a family-run savings ledger for iPhone and iPad. You set an interest rate for each of your kids. You choose how often it compounds — daily, weekly, monthly, quarterly, or yearly. You log deposits and withdrawals in a tap, and PennyPod handles the math, posts interest on schedule, and draws the chart.

You are not depositing anywhere. No real bank is involved. You are the bank. The app does the accounting, shows the charts, and keeps every child's ledger straight.

How families use PennyPod:

• Set a 5% daily-compounded rate for a 7-year-old and log a weekly chore bonus. A year later the kid has watched real compounding happen on their own numbers.
• Log a $50 birthday gift from grandma in seconds and show your kid the balance jump plus a 30-day sparkline.
• Set a $500 balance cap with brokerage overflow to simulate what happens when savings exceed a limit — an honest teaching moment about diversification without moving any real money.
• Open Time Machine and show an 11-year-old what $20 a month at 5% looks like at age 18, 25, and 65, with a growing-tree animation.

What you get:

• Daily-accrual compound interest with five compounding schedules
• Full transaction ledger per child — deposits, withdrawals, interest postings
• Backdated transactions with automatic interest recomputation
• Recurring presets: weekly allowance, monthly allowance, chore bonus, birthday gift, or custom
• Balance cap with brokerage-overflow tracking (record-only)
• Time Machine projection with optional monthly contributions
• Kid Mode — a full-screen, admin-free view with a growth-garden visualization
• Growth chart you can drag to inspect any date
• Per-child color themes and avatar choices
• Light, dark, and system appearance
• JSON export so your data is always portable
• Universal — one purchase, iPhone and iPad

Privacy by default: PennyPod runs entirely on your device. No analytics, no tracking, no crash reporting, no ads, no third-party SDKs. Your family data lives in a local SwiftData database on your iPhone and is never transmitted to us or anyone else. No account, no sign-up, no email required.

Free vs. paid: PennyPod is free to download. The free version supports one child with the complete interest engine, recurring transactions, Time Machine, Kid Mode, growth chart, and data export. A one-time $6.99 purchase — PennyPod Family — unlocks unlimited children, a family-wide interest audit trail, editable rate history, brokerage-overflow detail, and JSON data import. One payment, yours forever, shared across Family Sharing.